Re: A ManyToMany Field question.

[khsing]

class user(models.Model):
username = models.CharField(max_length=50)

class group(models.Model):
groupname = models.CharField(max_length=50)
users = models.ManyToManyField(user)
groups = models.ManyToManyField('self')

there are my models.

I have no idea to get a complete group list in such models, anyone
give me a suggestion.

example:
user U1 belong group G1 and group G1 belong G2, I want get G1 and G2 via U1.
like this

def get_all_groups(user):
return all_groups

>>>get_all-groups(U1)
[G1, G2]

that all.

Thank.




On Tue, Feb 10, 2009 at 12:18 PM, khsing  wrote:
> Alex, thanks, now it work.
>
> now have a new problem is may a group can contain itself, this will be a loop.
>
> how to avoid this condition?
>
>
>
> On Tue, Feb 10, 2009 at 11:28 AM, Alex Gaynor  wrote:
>>
>>
>> On Mon, Feb 9, 2009 at 10:18 PM, khsing  wrote:
>>>
>>> I want design a group that can contain other groups, and one group can
>>> belong many groups.
>>>
>>> I write such code below, but not right.
>>>
>>> class Group(models.Model):
>>>groups = models.ManyToManyField(Group)
>>>
>>> any suggestion?
>>>
>>> or how to design such a group.
>>>
>>> thanks.
>>>
>>> --
>>> A man live in jail and want to break.
>>> http://blog.khsing.net
>>>
>>>
>>
>> To have a relationship with oneself you do
>>
>> ManyToManyField("self")
>>
>> --
>> "I disapprove of what you say, but I will defend to the death your right to
>> say it." --Voltaire
>> "The people's good is the highest law."--Cicero
>>
>> >>
>>
>
>
>
> --
> A man live in jail and want to break.
> http://blog.khsing.net
>



-- 
A man live in jail and want to break.
http://blog.khsing.net

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Re: comparisons with java framework

[igorlash]

Russ Magee , I've got a question personally to you.
Why do we need to use make ? Why this build can't be done without make
but only with python ? A lot of companies try to avoid using make and
moving projects to python as build tool.

On Feb 11, 1:59 am, Russell Keith-Magee 
wrote:
> On Tue, Feb 10, 2009 at 8:41 PM, igorlash  wrote:
>
> > The django community should allow to download html version of
> > documentation to make this project more attractive , I'm sure it
> > doesn't take a lot of time to generate it on configured environment.
>
> You're sure, are you? Have you actually written the infrastructure to do this?
>
> > But a lot of time can be saved on django users' side. More over it can
> > be critical on making decision between this or other framework.
>
> In your opinion. Personally, I doubt that any serious comparison
> between Django and another framework hinges on the availability of a
> downloadable documentation.
>
> Let's break this down. We have finite resources, so you have a choice between:
>
> 1) Good documentation that is only available online
>
> 2) A slightly worse product, and slightly worse documentation that is
> available as a downloadable package.
>
> This sounds extreme, but it is the real situation. Any resources we
> spend on building the tools to support an automated documentation
> package are resources we don't spend working on Django itself.
>
> You apparently would prefer option 2. That's your choice. However,
> Django has decided to choose option 1.
>
> If you feel that the availability of a downloadable documentation
> package is a valuable resource, you are free to set up the
> infrastructure to manage this process yourself. If you can provide
> concrete evidence that there is a massive demand for this service, we
> will obviously reconsider our opinion. In the meantime, we provide the
> tools to enable you to build your own offline documentation.
>
> Yours,
> Russ Magee %-)
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Re: Problems with djangosearch setup

[Praveen]

SEARCH_ENGINE is not able to find solr. i think some thing wrong in
your configuration or try to change the case SOLR 'Solr' some thing
like that

On Feb 11, 6:15 am, Shantp  wrote:
> Hi
>
> I've installed Java, Tomcat and Solr. I followed the directions and
> got pysolr as well. I put the djangosearch app on my python path and
> put it in the installed_apps in my settings.py.
>
> http://code.google.com/p/djangosearch/source/browse/branches/soc-new-...
>
> In the read me it says to put this in my settings.py file:
>
> SEARCH_ENGINE="solr"
>
> I did this and when I run a shell to do a test query I get an error
> saying "ImportError: No module named solr"
>
> Did anyone successfully setup this app? Why is it giving this error?
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Save Local image with model

[rane]

Hi,
I've a model with imagefield which I am easily able to save using
request.FILES. I have some images which are already uploaded (on the
server at a known path), I want to save them with the model. When i
save the model, the save method also creates thumbnails, which is why
I want to save the uploaded files with the model through the model's
save method.

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Associating content with multiple sites

[Praveen]

lets assume all in lowercase

expo/expoapp/models.py


class events(models.Model):
title = models.CharField(max_length = 50)
summary = models.CharField(max_length = 100)
description = models.CharField(max_length = 300)
event_type = models.ForeignKey(event_type)
start_date = models.DateField()
end_date = models.DateField()
contact_detail = models.CharField(max_length = 100)
booking_url = models.URLField(max_length = 50)
venue = models.CharField(max_length = 100, blank = True)
address = models.CharField(max_length = 100, blank = True)

foodie/foodieapp/models.py


class events(models.Model):
title = models.CharField(max_length = 50)
summary = models.CharField(max_length = 100)
description = models.CharField(max_length = 300)
event_type = models.ForeignKey(event_type)
start_date = models.DateField()
end_date = models.DateField()
contact_detail = models.CharField(max_length = 100)
booking_url = models.URLField(max_length = 50)
venue = models.CharField(max_length = 100, blank = True)
address = models.CharField(max_length = 100, blank = True)

we have same structure events class in both sites.
Both sites use the same events database, and an events is associated
with one or more sites
It lets the site producers edit all events -- on both sites -- in a
single interface (the Django admin).
so my doubt is:
Is it necessary to write events class in both application and if it is
not then where should i keep events class in which app. if it should
be in both sites then how may i proceed ahead?
If i keep events class in both models.py then i will face this problem
No, that would mean for app a and b you will get tables: a_eventtype
and b_eventtype.
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Re: I may have found a bug in inlineformset_factory vicinity

[Karen Tracey]

On Tue, Feb 10, 2009 at 5:37 PM, Skylar  wrote:

>
> I get rendered
> Id also
> User
>

This is a rather huh?-inducing start to a bug report. Without context, those
two  outputs look perfectly fine. It really helps if you start with
what you are doing at a high level, the code you are using to attempt to
achieve that, what you expected the result of running the code to be, and
what you got instead.  You started at the end of that and worked backwards,
leaving out what you expected and what you are doing at a high level.


>
> ### The mostly relevent part of views.py:
>
> from django.forms.models import inlineformset_factory
> @login_required
> def pickup(request):
>try:
>profile = request.user.get_profile()
>except:
>return HttpResponseRedirect('/profile/')
>
>PickUpFormSet = inlineformset_factory(UserProfile,
> AuthorizedPickUpPerson, max_num=5, fields=('name', 'relationship',
> 'phone'))


Ah, so maybe the issue is you did not specify the id and user fields in the
form, therefore weren't expecting them to be rendered?  If so, why couldn't
you have mentioned that instead of asking people to trawl through a page of
code trying to guess what it was you were trying to report?  If not, I'm
still lost as to what your issue is, because I stopped guessing at this
point and am proceeding on the assumption that you don't expect those fields
to be in the form since you did not explicitly list them.

Without actually digging into the formset code, I have a feeling those
fields (primary key and fk to parent model) are always included as hidden
fields in the inline formset forms.  They're needed for properly keeping
track of things, so even if you don't explicitly list them, they will be
there.  They will be hidden, though, and you would see that by checking the
output of as_p(), for instance, on one of these forms.  So then the question
is why are the labels appearing on your form?


>
>if request.method == "POST":
>formset = PickUpFormSet(request.POST, instance=profile )
>if formset.is_valid():
>instances = formset.save(commit=False)
>for instance in instances:
>instance.user = profile()
>instance.save()
>return HttpResponseRedirect('/')
>
>else:
>formset = PickUpFormSet(instance=profile, )
>
>context = {'formset':formset, 'profile':profile,}
>return render_to_response('pickup.html', context,
> context_instance=RequestContext(request))
>
> ###Rendering to this template:
>
> 
>{{ formset.management_form }}
>
>{% for form in formset.forms %}
>{% for field in form %}
>{{ field.label_tag }}: {{ field }} 
>{% if field.help_text %}
>{{ field.help_text }}{% endif %}
>{% if field.errors %}{{ field.errors }}{% endif %}
>{% endfor %}
>{% endfor %}
>
> 
> 
>

You have your own field-by-field rendering but do not check the is_hidden
attribute for a field before rendering the field label.  See its description
at the end of the attribute list discussed here:

http://docs.djangoproject.com/en/dev/topics/forms/#looping-over-the-form-s-fields

See also the discussion of looping over hidden and visible fields here:

http://docs.djangoproject.com/en/dev/topics/forms/#looping-over-hidden-and-visible-fields

Karen

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Re: executing raw sql results in traceback

[Karen Tracey]

On Tue, Feb 10, 2009 at 10:28 PM, Bobby Roberts  wrote:

>
> hi gang.  For various reasons i've decided to use a raw sql statement
> in my view.  Following the example located at
> http://docs.djangoproject.com/en/dev/topics/db/sql/, I have a view
> which looks like this:
>
>
> def searchform(request):
>  from django.db import connection
>  ...
>  # a massive sql statement is dynamically built here. called sqlall
> (used below)
>
>  try:
>#setup recordset
>cursor=connection.cursor()
>cursor.execute (sqlall)
>tms=cusor.fetchall()  #this will be pushed back to the template
>  except IndexError:
>#nothing found so redirect to "no results page"
>return HttpResponseRedirect ('/search/results/none/')
>
> ...
>
>
> When I assert the sqlall variable, the sql statement executes
> perfectly in phpmyadmin.  However, Django throws the following
> traceback:
>
> not enough arguments for format string
>
> I have no idea what this error means and why it's not working... any
> ideas?


(Aside: That's not a traceback, it's a (partial) error message.  A traceback
includes an error message but also identifies the line of code causing the
error, including file name and line number, plus similar for all the code up
the call stack.  It is much more informative than just the error message,
and it's usually a good idea to include the whole traceback instead of just
the error message in posts asking for help.)

This is the  kind of thing that can cause the error message you are
reporting:

Python 2.5.1 (r251:54863, Jul 31 2008, 23:17:40)
[GCC 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> "%s %s" % ('hi',)
Traceback (most recent call last):
  File "", line 1, in 
TypeError: not enough arguments for format string
>>>

I specified a string with two %s placeholders but only one object to take
their place, so Python raises an error that there are not enough arguments
for my format string.  Since you left out all the stuff that has anything to
do with creating the sql statement I'm not sure what you are doing to cause
this, though I notice you are not passing any parameter argument list to
your execute() call.  Are there no parameters that need to be substituted
into your dynatmically-generated sql statement?

Karen

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Re: dynamic ModelChoiceField and handling form submission

[wynfred]

> The issue is you are passing the kwarg "user" after the arg.  Since user is
> the first param when you pass request.POST as the first arg it assumes it is
> user.  Reorganize your arguments in some(make user first, or pass
> request.POST as a kwarg) way.
>
> Alex

Thanks, Alex. That was a huge help. Passing request.POST as kwarg
solved the issue:
form = SystemAlertForm(data=request.POST, user=request.user,
instance=alert)

I really appreciate your help, and such a quick response.
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Re: KML geodjango plz help!

[Greg Aumann]

On Feb 10, 6:06 pm, arbi  wrote:
> I am a newb in Django/GeoDjango.
> I am making the tutorial here :http://code.djangoproject.com/wiki/GeoDjango
> and I use mySQL as a database. The project is to store places in a
> database, then to display it on a OpenLayer Map (like Google Maps)
>
> Does any one know how to solve this problem of "KML stored procedure
> not available" ?
mysql does not support kml, see http://geodjango.org/docs/db-api.html#kml
You must use postgresql for kml support.

In case you don't know there is a geodjango mailing list.
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Re: version control convention?

[Jeff Anderson]

Serdar T. wrote:
> Is it better to create repositories at a site-, project- or app-level?
>   
Technically, you can do all three.

Definitely put all of your re-usable apps into their own repository.

I always put my projects into their own repository, but I don't
necessarily include apps that I'm using in them that come from somewhere
else. I do have a couple of repos that are just projects and have no
apps in them. The apps are expected to be on the python path at runtime.

There are a couple of times when you really don't need your app to be
re-usable. It's fine to create a project and an app that will always and
forever live in the same version controlled repo.

Another common practice is to take advantage of version control systems
features of being able to reference external repositories. svn has an
"external" option, and git has something called submodules. I'm not
super familiar with other version control systems, but I'm sure there
are equivalents in most popular ones.

Generally speaking, when you are writing an app, the repo should have a
layout that looks something like this:

/docs/
/appname/
/readme.txt
/authors.txt
/setup.py

...etc...

This is a fairly common in practice. The idea is that a lot of those
things don't belong in with your python code, so they live one level up.
Django itself follows this convention, as do most python projects.

When you want to track a whole site, you can add projects and/or apps as
submodules/externals. Generally speaking, a single site could/should be
a single Django project, and making this distinction doesn't come up
terribly often in the configurations I've seen.

Hopefully this was helpful and happy coding!


Jeff Anderson



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Description: OpenPGP digital signature

Re: date error

[Hervé Edorh]

thank you Mr Morales it work
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executing raw sql results in traceback

[Bobby Roberts]

hi gang.  For various reasons i've decided to use a raw sql statement
in my view.  Following the example located at
http://docs.djangoproject.com/en/dev/topics/db/sql/, I have a view
which looks like this:


def searchform(request):
  from django.db import connection
  ...
  # a massive sql statement is dynamically built here. called sqlall
(used below)

  try:
#setup recordset
cursor=connection.cursor()
cursor.execute (sqlall)
tms=cusor.fetchall()  #this will be pushed back to the template
  except IndexError:
#nothing found so redirect to "no results page"
return HttpResponseRedirect ('/search/results/none/')

...


When I assert the sqlall variable, the sql statement executes
perfectly in phpmyadmin.  However, Django throws the following
traceback:

not enough arguments for format string

I have no idea what this error means and why it's not working... any
ideas?
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Problems with djangosearch setup

[Shantp]

Hi

I've installed Java, Tomcat and Solr. I followed the directions and
got pysolr as well. I put the djangosearch app on my python path and
put it in the installed_apps in my settings.py.

http://code.google.com/p/djangosearch/source/browse/branches/soc-new-backends/doc/README.txt

In the read me it says to put this in my settings.py file:

SEARCH_ENGINE="solr"

I did this and when I run a shell to do a test query I get an error
saying "ImportError: No module named solr"

Did anyone successfully setup this app? Why is it giving this error?

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Re: Stupid Newbie ManyToManyField Contains question

[bkev]

Hmm... That sort of works, but not quite. If I use the filter method,
it won't properly set the jumbledname on the first save. However, if I
go back in and save the instance again a second time, it will properly
set jumbledname. If I had it to guess, (after looking at the Django
documentation) it's because the filter method uses a SQL like
statement (rather than just evaluating the post data) which probably
means it has to look at the database first...in other words, the first
save changes the lastname field, and the second save looks at that
field and changes jumbledname accordingly. (This is a guess, but based
on the behavior, I think it's the right one). Any ideas as to how I
might modify it?

Thank you for everything,
bkev
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Re: Bizarre sqlite3 / apache2 behaviour

[lazyant]

Thanks a lot Jeff.

I figured out the problem which was a bit more complicated than that
but basically was also what you said.

I downloaded the sqlite3 client and that helped too.

What throw me off (among other things) is that in Linux you only need
executable permissions to a directory and write permissions to a file
to modify it and for apache/sqlite3 you also need write permissions to
the directory, not sure why and especially since the other files
(owned by root, in the same directory) are accessed by apache without
problems and no temporary files etc are created.

Also the examples and solutions from people in the web where they gave
all kinds of permissions to the main code directory (where the
database file was) and file didn't make sense to me from a security
standpoint; I think a better solution is to put the sqlite file in a
separate directory (just for that file), that way we don't have to
lower the security of the rest of the project.

Regards

On Feb 10, 3:12 pm, Jeff FW  wrote:
> You need to make sure that the user apache is running as (usually
> "apache") has write access to the database file *and* the directory
> that the database file is in.
>
> The development server would work because *you* probably have write
> access to those paths.
>
> As for the sqlite3 version, run python, then:
>
> >>> import sqlite3
> >>> sqlite3.version
>
> -Jeff
>
> On Feb 9, 12:10 pm,lazyant wrote:
>
> > Hello,
>
> > I installed yesterday Django 1.0.2 (current downloadable version) on a
> > new Ubuntu 8.10 machine with python 2.5.2. I wrote a toy application
> > and it works and shows fine with both the built-in development server
> > and Apache 2 (2.2.9). The database is sqlite3, it came with python
> > (btw, how do I get the sqlite3 version from python/the Linux command
> > line?).
>
> > Anyways, yesterday everything was working fine, including the admin
> > application served by Apache. Today I only worked on templates,
> > restarting apache frequently (I know about setting MaxRequestsPerChild
> > 1 but anyways) but after a while I went to the admin application
> > (served by apache) and I got an error: "OperationalError: attempt to
> > write a readonly database", which is strange since it was working
> > before and I haven't made today any changes to file or directory
> > permissions or fiddled with the settings file.
>
> > I looked up this error and I only see tips regarding permissions
> > problems, bad path in the setting file or perhaps a sqlite version
> > issue. I think none of that applies to me (since it was working
> > yesterday)  but I double-checked just in case.
>
> > I tried different things for troubleshooting, including dropping the
> > data with "manage.py sqlclear" and renaming the db file and re-
> > creating it with "manage.py reset" and "manage.py syncdb" (I suspected
> > perhaps the file was corrupted), but nothing I tried worked. I also
> > checked the server (it wasn't rebooted recently etc).
>
> > Here's a twist: if I start the development server and I log in, then
> > the admin app in apache works fine (!), I can edit & save records etc.
> > As soon as I log out of the development server, then apache gives me
> > the readonly error.
>
> > I'm ruling out client-side issues (cookies etc) since I tried with
> > different browsers and computers, deleting session and cookies etc.
>
> > Any ideas?
>
> > Thanks
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Re: where's our poll app?

[Tim Johnson]

On Tuesday 10 February 2009, djandrow wrote:
> Did you create the models and is the database correctly configured in
> settings.py?
 I added 'phhsite.polls', the server is seeing it now.
 Thanks
 :-) stayed tuned - I'm an old pythonisto in more ways than one,
but just a django noob 
cheers
tj 

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Re: comparisons with java framework

[Russell Keith-Magee]

On Tue, Feb 10, 2009 at 8:41 PM, igorlash  wrote:
>
> The django community should allow to download html version of
> documentation to make this project more attractive , I'm sure it
> doesn't take a lot of time to generate it on configured environment.

You're sure, are you? Have you actually written the infrastructure to do this?

> But a lot of time can be saved on django users' side. More over it can
> be critical on making decision between this or other framework.

In your opinion. Personally, I doubt that any serious comparison
between Django and another framework hinges on the availability of a
downloadable documentation.

Let's break this down. We have finite resources, so you have a choice between:

1) Good documentation that is only available online

2) A slightly worse product, and slightly worse documentation that is
available as a downloadable package.

This sounds extreme, but it is the real situation. Any resources we
spend on building the tools to support an automated documentation
package are resources we don't spend working on Django itself.

You apparently would prefer option 2. That's your choice. However,
Django has decided to choose option 1.

If you feel that the availability of a downloadable documentation
package is a valuable resource, you are free to set up the
infrastructure to manage this process yourself. If you can provide
concrete evidence that there is a massive demand for this service, we
will obviously reconsider our opinion. In the meantime, we provide the
tools to enable you to build your own offline documentation.

Yours,
Russ Magee %-)

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Re: where's our poll app?

[djandrow]

Did you create the models and is the database correctly configured in
settings.py?

On 10 Feb, 22:55, Tim Johnson  wrote:
> It's not displayed on the admin index page.
>
> From the Tutorial 
> at:http://docs.djangoproject.com/en/dev/intro/tutorial02/#intro-tutorial02
>
> Name of the project is phhsite
> from phhsite ran python manage.py startapp polls
> directory was created.
> Then created the admin file
> Restarted the server by first pressing Ctrl-C
> then invoking python manage.py runserver
> No sign of any application call polls.
> polls/admin.py looks like this:
> ##---
> from phhsite.polls.models import Poll
> from django.contrib import admin
>
> admin.site.register(Poll)
> ## added the following as a test
> 1 / 0
> ## the 1 / 0 is deliberate,
> ## If django found this file, I should have seen an error
>
> Using python 2.5 on kubuntu 7.10
> What have I overlooked?
> Thanks
> Tim
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Re: How do I display the human readable name of a choice?

[Alex Gaynor]

On Tue, Feb 10, 2009 at 6:39 PM, Kevin Audleman wrote:

>
> Thanks Alex, however this is a solution at the View level, and I'm
> using a view that I didn't write. Is there also a way to do this at
> the template level?
>
> Thanks again,
> Kevin
>
> On Feb 10, 1:24 pm, Alex Gaynor  wrote:
> > On Tue, Feb 10, 2009 at 4:23 PM, Kevin Audleman <
> kevin.audle...@gmail.com>wrote:
> >
> >
> >
> >
> >
> > > Hi everyone,
> >
> > > I've set up a model that has a state field with the input set to a
> > > list of states,
> >
> > > state = models.CharField(max_length=100, blank=True,
> > > choices=US_STATE_LIST)
> >
> > > The drop-down on the edit form works great, displaying 'Alabama'  and
> > > storing AL in the database. However when I view it, I see AL. How do I
> > > get django to display the human readable name?
> >
> > > I would prefer to do this on the template level, as I'm using a view
> > > from a contributed app that I can't modify.
> >
> > > Thanks,
> > > Kevin
> >
> > http://docs.djangoproject.com/en/dev/ref/models/instances/?from=olddo...
> >
> > Alex
> >
> > --
> > "I disapprove of what you say, but I will defend to the death your right
> to
> > say it." --Voltaire
> > "The people's good is the highest law."--Cicero
> >
>
Yes, the same thing works {{ model.get_FIELD_display }}.

Alex

-- 
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say it." --Voltaire
"The people's good is the highest law."--Cicero

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Re: How do I display the human readable name of a choice?

[Kevin Audleman]

Thanks Alex, however this is a solution at the View level, and I'm
using a view that I didn't write. Is there also a way to do this at
the template level?

Thanks again,
Kevin

On Feb 10, 1:24 pm, Alex Gaynor  wrote:
> On Tue, Feb 10, 2009 at 4:23 PM, Kevin Audleman 
> wrote:
>
>
>
>
>
> > Hi everyone,
>
> > I've set up a model that has a state field with the input set to a
> > list of states,
>
> > state = models.CharField(max_length=100, blank=True,
> > choices=US_STATE_LIST)
>
> > The drop-down on the edit form works great, displaying 'Alabama'  and
> > storing AL in the database. However when I view it, I see AL. How do I
> > get django to display the human readable name?
>
> > I would prefer to do this on the template level, as I'm using a view
> > from a contributed app that I can't modify.
>
> > Thanks,
> > Kevin
>
> http://docs.djangoproject.com/en/dev/ref/models/instances/?from=olddo...
>
> Alex
>
> --
> "I disapprove of what you say, but I will defend to the death your right to
> say it." --Voltaire
> "The people's good is the highest law."--Cicero
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Best way to deal with dictionaries of lists (equivalent of SQL GROUP BY)

[Adam Nelson]

I'm looking at the documentation here:

http://docs.djangoproject.com/en/dev/ref/templates/builtins/#regroup

And am looking for the best practices way to deal with doing that from
within the manager.  This seems like a common issue:

1. I have two models, one foreign keys to the other (comments ->
bookmarks)
2. I want, for each bookmark, to list each comment_description.

This would be the dictionary (or I could use a queryset, or a list, or
ideally a dictionary of lists, or whatever is considered best
practice)

[{'comment_id': 1, 'bookmark_id': 1, 'comment_description':
u'Bookmark1 Description'}, {'comment_id': 2, 'bookmark_id': 1,
'comment_description': u'Bookmark1 Another Description'}, {'id': 3,
'comment_id': 2, 'comment_description': u'Bookmark2 Description'}]

I want:

bookmark_id 1, comment_descriptions "Bookmark1 Description","Bookmark1
Another Description"
bookmark_id 2, comment_descriptions "Bookmark2 Description"

The Python docs are really tough to navigate and while the Django docs
are excellent, I can't find the standard solution for this.  I know it
must come up all the time (as it would with PHP).

Thanks,
Adam

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Re: comparisons with java framework

[Russell Keith-Magee]

On Wed, Feb 11, 2009 at 6:52 AM, Greg Ewing  wrote:
>
> Alex Gaynor wrote:
>
>> As I said above, a checkout of the django source includes all the docs,
>> which can be built into nice HTML just as online with the sphinx module
>> for python.  It takes all of 30 seconds.
>
> Only if you have all the necessary tools and dependencies
> installed and working, which not everybody does, especially
> on Windows.

Well... there's your problem right there. :-)

> Besides which, you're *already* building the html yourself
> for the web site, so why not make it easily available? Refusing
> to do so seems pointlessly obstructive.

Yes. We want to make sure you never get any work done. We want to put
roadblocks on your road to world domination.

Seriously - dial down the rhetoric a bit. If you are unhappy with the
service you have received, we will happily give you a 100% refund of
your purchase price.

We already provide up-to-date generated HTML documenation. We just
don't provide it in a nice tarball to download. If you can't install
Sphinx and build the documentation yourself, then how about using wget
or any one of the several thousand site mirroring tools that are in
existence?

Building the infrastructure to handle automatic downloads is not a 0
effort activity. Someone needs to write the code, and someone needs to
maintain it.

Unfortunately (for you), in the opinion of the core developers, this
simply isn't worth the effort. While there is an occasional (and
usually very vocal) request for downloadable documentation, in our
estimation this is a very small group. We can spend our time trying to
satisfy this group, or we can spend our time improving Django - for
example, by adding aggregates and query expression to the ORM. We have
decided to do the latter.

Also - one of the benefits of using ReST as a source format is that it
is actually human readable. If you put the ducks in a row to use
Sphinx, and you can't find a site mirroring tool, you can still read
the raw ReST sources.

Yours,
Russ Magee %-)

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KML geodjango plz help!

[arbi]

Hi all!

I am a newb in Django/GeoDjango.
I am making the tutorial here : http://code.djangoproject.com/wiki/GeoDjango
and I use mySQL as a database. The project is to store places in a
database, then to display it on a OpenLayer Map (like Google Maps)

The problem is that I get a :
Exception Type: ImproperlyConfigured
Exception Value: KML stored procedure not available.

Does any one know how to solve this problem of "KML stored procedure
not available" ?
I have no hairs anymore.

thx a lot

Arbi


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where's our poll app?

[Tim Johnson]

It's not displayed on the admin index page.

>From the Tutorial at: 
http://docs.djangoproject.com/en/dev/intro/tutorial02/#intro-tutorial02

Name of the project is phhsite
from phhsite ran python manage.py startapp polls
directory was created.
Then created the admin file
Restarted the server by first pressing Ctrl-C
then invoking python manage.py runserver
No sign of any application call polls.
polls/admin.py looks like this:
##---
from phhsite.polls.models import Poll
from django.contrib import admin

admin.site.register(Poll)
## added the following as a test
1 / 0
## the 1 / 0 is deliberate, 
## If django found this file, I should have seen an error

Using python 2.5 on kubuntu 7.10
What have I overlooked?
Thanks
Tim

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Re: Json Serialization / Form Validation error

[adrian]

Thank you all for posting this.  You saved me probably hours of head
scratching.
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Re: Cookie authentication

[Sylvain]

Hello everybody,

I still haven't found any solution for this problem, although it seems
quite simple and common... any idea ?

Thank you !

On 26 jan, 13:15, Sylvain  wrote:
> Hello everybody,
>
> I'm trying to create a cookie-based authentication so that the users
> don't have to login each time they visit the website. I'm already
> using django.contrib.auth to log the users in and it works pretty well
> with a custom authentication backend (because I'm importing the users
> from another database). I thought I could create another
> authentication backend to log the users in by using cookies.
>
> So I created a second authentication backend to handle this and added
> it to my AUTHENTICATION_BACKENDS setting. Now I have :
>
> AUTHENTICATION_BACKENDS = (
>     'myproject.apps.users.models.Authentication',
>     'myproject.apps.users.models.CookieAuthentication',
> )
>
> In the cookie, 2 main informations are stored : the user id and a hash
> of its password and a salt. So my CookieAuthentication.authenticate()
> method takes 2 arguments : the user id and the user's password hash.
> The big problem is that Django's default authentication behaviour is
> to take a username and a raw password, and my authentication method
> should take a user id and a password hash. So for the moment I'm
> passing the user id as the "username" parameter and the password hash
> as the "password" parameter. But this leads to a couple of problems :
>
> - If a user fails his authentication with the Authentication backend,
> the CookieAuthentication backend will be tried. Since the
> Authentication backend takes the username as the username argument and
> not the user id, the CookieAuthentication will crash. For the moment I
> added a "if isinstance()..." to test the type of the username variable
> but I don't think it's very clean.
>
> - I can't pass more information to the
> CookieAuthentication.authenticate() method like the duration of the
> session (which depends on whether the user choosed to remember his
> connection or not) and other stuff like that which are cookie-
> dependent.
>
> - It's not clean at all because if a user has the name of the id of
> another user (for example a user named "314"), if the user tries to
> log in normally (using the login form) and it fails, the cookie
> authentication method will be used and if the password hash is the
> same as the user "314", the user will be authenticated. I know the
> chances are near 0%, but that's just to show that it's not very clean.
>
> Any idea on how to implement that in a clean way ?
>
> Thanks !!
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Re: Another thread about static content

[djandrow]

I've move it just to the apache2.2 file so my conf is now:

Options Indexes FollowSymLinks


SetHandler python-program
PythonHandler django.core.handlers.modpython
SetEnv DJANGO_SETTINGS_MODULE akonline.settings
PythonOption django.root /akonline
PythonDebug On
PythonPath "['C:/Program Files/Apache2.2'] + sys.path"



Order Allow,Deny
Allow from all
SetHandler None


Alias /media/ "C:/Program Files/Apache2.2/akonline/templates/blogSite/
media/"


SetHandler None


But i'm still having the same problems

Andrew
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Re: comparisons with java framework

[Alex Gaynor]

On Tue, Feb 10, 2009 at 4:52 PM, Greg Ewing wrote:

>
> Alex Gaynor wrote:
>
> > As I said above, a checkout of the django source includes all the docs,
> > which can be built into nice HTML just as online with the sphinx module
> > for python.  It takes all of 30 seconds.
>
> Only if you have all the necessary tools and dependencies
> installed and working, which not everybody does, especially
> on Windows.
>
> Besides which, you're *already* building the html yourself
> for the web site, so why not make it easily available? Refusing
> to do so seems pointlessly obstructive.
>
> --
> Greg
>
> >
>
I don't mean to be rude, but the development tools needed(Sphinx) aren't
particularly difficult to install, and really are a valuable resource to
have.  Prebuilding the docs means that either the developers need to
remember to build the docs before each checkin, or a post-commit hook needs
to be added to build them(assuming this is possible) both of which incur
additional overhead on the django developers to the benefit of the subset of
the community that both doesn't have constant access to the internet(not an
unreasonable situation) and who don't have Sphinx installed(which I would
consider unreasonable for someone who knows they can't access the web docs).

These are just my thoughts, I'm not a core dev, but I'd rather they spent
their time working on Django than remembering to rebuild the docs and
fiddling with SVN post commit hooks.

Alex

-- 
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say it." --Voltaire
"The people's good is the highest law."--Cicero

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Re: Another thread about static content

[djandrow]

So would it be best to move my project somewhere else?

On 10 Feb, 21:48, Ramiro Morales  wrote:
> On Tue, Feb 10, 2009 at 7:40 PM, djandrow  wrote:
>
> > Hello all,
>
> > I know theres alot of threads like this out there but I'm still
> > struggling. I've got a simple html template which i access through a
> > view:
>
> > 
> > 
> > 
>
> > the template is in C:/Program Files/Apache2.2/htdocs/akonline/
> > templates/blogSite
> > and the image is then in blogSite/media
>
> > then in my conf I have:
>
> > 
> >    SetHandler python-program
> >    PythonHandler django.core.handlers.modpython
> >    SetEnv DJANGO_SETTINGS_MODULE akonline.settings
> >    PythonOption django.root /akonline
> >    PythonDebug On
> >    PythonPath "['C:/Program Files/Apache2.2/htdocs'] + sys.path"
> > 
>
> >  > blogSite/media/">
> >        Order Allow,Deny
> >        Allow from all
> >        SetHandler None
> > 
>
> > Alias /media/ "C:/Program Files/Apache2.2/htdocs/akonline/templates/
> > blogSite/media/"
>
> > 
> >        SetHandler None
> > 
>
> > I'm using mod_python and Windows XP, I have the same setup (with
> > different locations and directories) on my linux host and it works
> > fine. So whats going on. I would be grateful for any help.
>
> Problem with this is how doas Apache what rule should it apply when
> it come to server something under /akonline or /media
> The one set by the
>
> DocumentRoot C:/Program Files/Apache2.2/htdocs
>
> directive ? or the one set by the Alias or Location
> blocks/directives above?.
>
> It is really better for you and for anybody trying to help
> you if you follow some basic common sense practices
> because it isn't  very practical having to set up
> a test Django app under one's Apache document root
> just to reproduce your setup.
>
> --
>  Ramiro Morales
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Re: comparisons with java framework

[Greg Ewing]

Alex Gaynor wrote:

> As I said above, a checkout of the django source includes all the docs, 
> which can be built into nice HTML just as online with the sphinx module 
> for python.  It takes all of 30 seconds.

Only if you have all the necessary tools and dependencies
installed and working, which not everybody does, especially
on Windows.

Besides which, you're *already* building the html yourself
for the web site, so why not make it easily available? Refusing
to do so seems pointlessly obstructive.

-- 
Greg

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Re: Stupid Newbie ManyToManyField Contains question

[Alex Gaynor]

On Tue, Feb 10, 2009 at 4:48 PM, bkev  wrote:

>
> Hmm...It is just a normal python string, but when I try 'Smith' in
> self.lastname, I get a "ManyRelatedManager is not iterable" error. Any
> ideas?
>
> Thanks again,
> -bkev
> >
>
Sorry I'm an idiot, I read lastname in the wrong place, what you'll want to
do for a manytomany is something like
if self.lastname.filter(lastname__contains="Smith")[:1]:

Alex

-- 
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say it." --Voltaire
"The people's good is the highest law."--Cicero

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Re: Stupid Newbie ManyToManyField Contains question

[bkev]

Hmm...It is just a normal python string, but when I try 'Smith' in
self.lastname, I get a "ManyRelatedManager is not iterable" error. Any
ideas?

Thanks again,
-bkev
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Re: Another thread about static content

[Ramiro Morales]

On Tue, Feb 10, 2009 at 7:40 PM, djandrow  wrote:
>
> Hello all,
>
> I know theres alot of threads like this out there but I'm still
> struggling. I've got a simple html template which i access through a
> view:
>
> 
> 
> 
>
> the template is in C:/Program Files/Apache2.2/htdocs/akonline/
> templates/blogSite
> and the image is then in blogSite/media
>
> then in my conf I have:
>
> 
>SetHandler python-program
>PythonHandler django.core.handlers.modpython
>SetEnv DJANGO_SETTINGS_MODULE akonline.settings
>PythonOption django.root /akonline
>PythonDebug On
>PythonPath "['C:/Program Files/Apache2.2/htdocs'] + sys.path"
> 
>
>  blogSite/media/">
>Order Allow,Deny
>Allow from all
>SetHandler None
> 
>
> Alias /media/ "C:/Program Files/Apache2.2/htdocs/akonline/templates/
> blogSite/media/"
>
> 
>SetHandler None
> 
>
> I'm using mod_python and Windows XP, I have the same setup (with
> different locations and directories) on my linux host and it works
> fine. So whats going on. I would be grateful for any help.

Problem with this is how doas Apache what rule should it apply when
it come to server something under /akonline or /media
The one set by the

DocumentRoot C:/Program Files/Apache2.2/htdocs

directive ? or the one set by the Alias or Location
blocks/directives above?.

It is really better for you and for anybody trying to help
you if you follow some basic common sense practices
because it isn't  very practical having to set up
a test Django app under one's Apache document root
just to reproduce your setup.

-- 
 Ramiro Morales

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Another thread about static content

[djandrow]

Hello all,

I know theres alot of threads like this out there but I'm still
struggling. I've got a simple html template which i access through a
view:





the template is in C:/Program Files/Apache2.2/htdocs/akonline/
templates/blogSite
and the image is then in blogSite/media

then in my conf I have:


SetHandler python-program
PythonHandler django.core.handlers.modpython
SetEnv DJANGO_SETTINGS_MODULE akonline.settings
PythonOption django.root /akonline
PythonDebug On
PythonPath "['C:/Program Files/Apache2.2/htdocs'] + sys.path"



Order Allow,Deny
Allow from all
SetHandler None


Alias /media/ "C:/Program Files/Apache2.2/htdocs/akonline/templates/
blogSite/media/"


SetHandler None


I'm using mod_python and Windows XP, I have the same setup (with
different locations and directories) on my linux host and it works
fine. So whats going on. I would be grateful for any help.

Thank you,

Andrew

PS. I know your not supposed to put your project in htdocs but this is
just on my PC so there aren't any security issuses.
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Re: date error

[Ramiro Morales]

On Tue, Feb 10, 2009 at 6:51 PM, Hervé Edorh  wrote:
>
> nobody for helping me?

It seems you have several problems:

First,  the code you are pasting has the indentation totally broken.

Second,

>i forgot, the first ulrs.py (in the project directory) is like this
>
> (r'^weblog/$',include('dibongo.urls')),
> (r'^weblog/(?P\d{4})/(?P\w{3})/(?P\d{2})/(?P\w+)/$',include('dibongo.urls')),
>
> this is the second that i put before. It for the chapiter decoupling
> the URLs

You aren't really decoupling things, because with the first entry in the URL map
you are correctly delegating all things under  weblog/ to the dibongo/urls.py
URL map  file but then in the second entry you show that you still want
to handle URsL for the dibongo app in the main urls.py. Ideally that
entry should
be moved to dibongo/urls.py ith the appropiate modification in the regexp
possibly merging it with the entry that invokes the
django.views.generic.date_based.archive_index generic view.

Third,

> urlpatterns = patterns('django.views.generic.date_based',
> (r'^$','archive_index',entry_info_dict,'dibongo_entry_archive_index'),
> (r'^$','object_detail', entry_info_dict,'dibongo_entry_detail'),

The regexp for the two entries in this URLmap are the same (r'^$')
and, as the URL resolution is performed from top to bottom,
the one using the django.views.generic.date_based.archive_index
generic views is matching.

Fix these problems first and then post again if you are still
experimenting problems.

HTH,


-- 
 Ramiro Morales

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JODConverter with Django

[Tonu Mikk]

I am curious if anyone is using JODConverter 
http://www.artofsolving.com/opensource/jodconverter in their Django 
project?  I would be interested in learning from your experience.

Thanks,
Tonu

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Re: How do I display the human readable name of a choice?

[Alex Gaynor]

On Tue, Feb 10, 2009 at 4:23 PM, Kevin Audleman wrote:

>
> Hi everyone,
>
> I've set up a model that has a state field with the input set to a
> list of states,
>
> state = models.CharField(max_length=100, blank=True,
> choices=US_STATE_LIST)
>
> The drop-down on the edit form works great, displaying 'Alabama'  and
> storing AL in the database. However when I view it, I see AL. How do I
> get django to display the human readable name?
>
> I would prefer to do this on the template level, as I'm using a view
> from a contributed app that I can't modify.
>
> Thanks,
> Kevin
> >
>
http://docs.djangoproject.com/en/dev/ref/models/instances/?from=olddocs#get-foo-display

Alex

-- 
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"The people's good is the highest law."--Cicero

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How do I display the human readable name of a choice?

[Kevin Audleman]

Hi everyone,

I've set up a model that has a state field with the input set to a
list of states,

state = models.CharField(max_length=100, blank=True,
choices=US_STATE_LIST)

The drop-down on the edit form works great, displaying 'Alabama'  and
storing AL in the database. However when I view it, I see AL. How do I
get django to display the human readable name?

I would prefer to do this on the template level, as I'm using a view
from a contributed app that I can't modify.

Thanks,
Kevin
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Re: comparisons with java framework

[Alex Gaynor]

On Tue, Feb 10, 2009 at 4:15 PM, Greg Ewing wrote:

>
> Russell Keith-Magee wrote:
>
> > No - we don't provide a PDF version of the documentation. This idea
> > has been proposed a few times in Django's history, but it has been
> > rejected in favour of providing the tools to let people build offline
> > versions by themselves.
>
> What about an offline HTML version, then? If you're
> already building HTML for online use, it can't be
> much harder to provide a tarfile of it for people to
> download.
>
> --
> Greg
>
> >
>
As I said above, a checkout of the django source includes all the docs,
which can be built into nice HTML just as online with the sphinx module for
python.  It takes all of 30 seconds.

Alex

-- 
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say it." --Voltaire
"The people's good is the highest law."--Cicero

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Re: comparisons with java framework

[Greg Ewing]

Russell Keith-Magee wrote:

> No - we don't provide a PDF version of the documentation. This idea
> has been proposed a few times in Django's history, but it has been
> rejected in favour of providing the tools to let people build offline
> versions by themselves.

What about an offline HTML version, then? If you're
already building HTML for online use, it can't be
much harder to provide a tarfile of it for people to
download.

-- 
Greg

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Re: Stupid Newbie ManyToManyField Contains question

[Alex Gaynor]

On Tue, Feb 10, 2009 at 4:07 PM, bkev  wrote:

>
> Hello all,
>
> Is there a way to check whether a field contains a certain value in a
> ManyToManyField in the admin on a custom save method? For example, I
> have a model like:
>
> class LastName(models.Model):
>lastname = models.CharField(...)
>
> class Person(models.Model):
>   firstname = models.CharField(...)
>   lastname = models.ManyToManyField(LastName,...)
>   jumbledname = models.CharField(..., editable = False)
>
>   def save(self):
>if self.lastname CONTAINS? 'Smith':
>self.jumbledname = u'%s%s' % ('self.firstname,
> self.lastname')
>else:
>self.jumbledname = self.firstname
>super(Person,self).save()
>
> Thanks,
> -bkev
> >
>
It all depends on what you're trying to do, in that example self.lastname is
just a normal python string, so you can do "Smith" in self.lastname, for
different datatypes it works slightly differently.

Alex

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say it." --Voltaire
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Stupid Newbie ManyToManyField Contains question

[bkev]

Hello all,

Is there a way to check whether a field contains a certain value in a
ManyToManyField in the admin on a custom save method? For example, I
have a model like:

class LastName(models.Model):
lastname = models.CharField(...)

class Person(models.Model):
   firstname = models.CharField(...)
   lastname = models.ManyToManyField(LastName,...)
   jumbledname = models.CharField(..., editable = False)

   def save(self):
if self.lastname CONTAINS? 'Smith':
self.jumbledname = u'%s%s' % ('self.firstname,
self.lastname')
else:
self.jumbledname = self.firstname
super(Person,self).save()

Thanks,
-bkev
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Re: date error

[Hervé Edorh]

nobody for helping me?
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Re: dynamic ModelChoiceField and handling form submission

[Alex Gaynor]

On Tue, Feb 10, 2009 at 3:24 PM, wynfred  wrote:

>
> I'm sure there is a simple solution here, but I've been searching the
> forum archive and elsewhere but so far haven't found an answer.
>
> I have a form that uses some dynamic ModelChoiceField fields,
> filtering the model for the logged-in user.
>
> The form in app's forms.py, slightly abridged, is like this:
>
> class SystemAlertForm(forms.ModelForm):
>usermessaging = forms.ModelChoiceField(label='Messaging address',
> queryset=UserMessaging.objects.filter(isactive=True))
>def __init__( self, user, *args, **kwargs ):
>super( SystemAlertForm, self ).__init__( *args, **kwargs )
>self.fields['usermessaging'].queryset =
> UserMessaging.objects.filter(isactive=True,user=user)
>
> Then in the view, after a POST, I have a line of code like this:
>
> form = SystemAlertForm(request.POST, user=request.user,
> instance=alert)
>
> But there is an error: __init__() got multiple values for keyword
> argument 'user'
>
> When displaying a bound form for a user, the form is fine: it displays
> this usermessaging ModelChoiceField correctly filtered -- and I call
> it the same way but without the request.POST:
> form = SystemAlertForm(user=request.user, instance=alert)
>
> But, after a POST, it displays the error above.
>
> Thanks in advance for any guidance.
>
> >
>
The issue is you are passing the kwarg "user" after the arg.  Since user is
the first param when you pass request.POST as the first arg it assumes it is
user.  Reorganize your arguments in some(make user first, or pass
request.POST as a kwarg) way.

Alex

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dynamic ModelChoiceField and handling form submission

[wynfred]

I'm sure there is a simple solution here, but I've been searching the
forum archive and elsewhere but so far haven't found an answer.

I have a form that uses some dynamic ModelChoiceField fields,
filtering the model for the logged-in user.

The form in app's forms.py, slightly abridged, is like this:

class SystemAlertForm(forms.ModelForm):
usermessaging = forms.ModelChoiceField(label='Messaging address',
queryset=UserMessaging.objects.filter(isactive=True))
def __init__( self, user, *args, **kwargs ):
super( SystemAlertForm, self ).__init__( *args, **kwargs )
self.fields['usermessaging'].queryset =
UserMessaging.objects.filter(isactive=True,user=user)

Then in the view, after a POST, I have a line of code like this:

form = SystemAlertForm(request.POST, user=request.user,
instance=alert)

But there is an error: __init__() got multiple values for keyword
argument 'user'

When displaying a bound form for a user, the form is fine: it displays
this usermessaging ModelChoiceField correctly filtered -- and I call
it the same way but without the request.POST:
form = SystemAlertForm(user=request.user, instance=alert)

But, after a POST, it displays the error above.

Thanks in advance for any guidance.

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Re: user defined model

[Jeff FW]

As much as I hate to suggest it, this sounds like a good time to use
XML.  Store each report as XML (in a file, or in a database row), then
use templates to render the data.

-Jeff

On Feb 9, 3:24 pm, Dids  wrote:
> > This is extremely unlikely to work, not to mention very inefficient.
> > Can you let us know why you want to do this - what's your use case? We
> > might be able to suggest a better way of doing it.
> > --
> > DR.
>
> Users define a set of data they're interested in. Give a mean to get
> the data (script, sql ...). The system goes and get the data at
> regular interval (save by date)
> The user can then review the data (table, charts , trends etc...)
> See it as a basic monitoring system where I currently have no idea
> what data the users will be interested in.
>
> I guess I can skip the table cration for each entity but I'm worried
> the code for data retrieval might get messy. Not to mention the
> templates ...
>
> Thanks for your input.
>
> Dids,
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Re: Bizarre sqlite3 / apache2 behaviour

[Jeff FW]

You need to make sure that the user apache is running as (usually
"apache") has write access to the database file *and* the directory
that the database file is in.

The development server would work because *you* probably have write
access to those paths.

As for the sqlite3 version, run python, then:
>>> import sqlite3
>>> sqlite3.version

-Jeff

On Feb 9, 12:10 pm, lazyant  wrote:
> Hello,
>
> I installed yesterday Django 1.0.2 (current downloadable version) on a
> new Ubuntu 8.10 machine with python 2.5.2. I wrote a toy application
> and it works and shows fine with both the built-in development server
> and Apache 2 (2.2.9). The database is sqlite3, it came with python
> (btw, how do I get the sqlite3 version from python/the Linux command
> line?).
>
> Anyways, yesterday everything was working fine, including the admin
> application served by Apache. Today I only worked on templates,
> restarting apache frequently (I know about setting MaxRequestsPerChild
> 1 but anyways) but after a while I went to the admin application
> (served by apache) and I got an error: "OperationalError: attempt to
> write a readonly database", which is strange since it was working
> before and I haven't made today any changes to file or directory
> permissions or fiddled with the settings file.
>
> I looked up this error and I only see tips regarding permissions
> problems, bad path in the setting file or perhaps a sqlite version
> issue. I think none of that applies to me (since it was working
> yesterday)  but I double-checked just in case.
>
> I tried different things for troubleshooting, including dropping the
> data with "manage.py sqlclear" and renaming the db file and re-
> creating it with "manage.py reset" and "manage.py syncdb" (I suspected
> perhaps the file was corrupted), but nothing I tried worked. I also
> checked the server (it wasn't rebooted recently etc).
>
> Here's a twist: if I start the development server and I log in, then
> the admin app in apache works fine (!), I can edit & save records etc.
> As soon as I log out of the development server, then apache gives me
> the readonly error.
>
> I'm ruling out client-side issues (cookies etc) since I tried with
> different browsers and computers, deleting session and cookies etc.
>
> Any ideas?
>
> Thanks
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Re: SQLite, swedish signs

[Karen Tracey]

On Tue, Feb 10, 2009 at 2:55 PM, DaSa  wrote:

>
> The traceback:
>
> Environment:
>
> Request Method: POST
> Request URL: http://127.0.0.1:8000/admin/polls/poll/add/
> Django Version: 1.0.2 final
> Python Version: 2.5.3
> [snip]
> File "C:\Python25\Lib\site-packages\django\utils\encoding.py" in
> force_unicode
>  52. s = unicode(str(s), encoding, errors)
>
> Exception Type: UnicodeEncodeError at /admin/polls/poll/add/
> Exception Value: 'ascii' codec can't encode character u'\xe5' in
> position 6: ordinal not in range(128)
>

Your original note showed a model named "MyClass", here you seem to be
dealing with adding a "poll" object.  The line of code you have reached here
implies your Poll class does not have a __unicode__ method, and the fix
would be to add a __unicode__ method to Poll.  However your original note
shows MyClass as having a __unicode__ method, so this traceback isn't very
helpful in identifying what is wrong in your MyClass case, since for the
model you originally showed, you would not have reached this last line of
code.

Karen

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Re: SQLite, swedish signs

[Karen Tracey]

On Tue, Feb 10, 2009 at 2:55 PM, DaSa  wrote:

>
> The traceback:
>
> Environment:
>
> Request Method: POST
> Request URL: http://127.0.0.1:8000/admin/polls/poll/add/
> Django Version: 1.0.2 final
> Python Version: 2.5.3
> [snip]
> File "C:\Python25\Lib\site-packages\django\utils\encoding.py" in
> force_unicode
>  52. s = unicode(str(s), encoding, errors)
>
> Exception Type: UnicodeEncodeError at /admin/polls/poll/add/
> Exception Value: 'ascii' codec can't encode character u'\xe5' in
> position 6: ordinal not in range(128)
>

Your original note showed a model named "MyClass", here you seem to be
dealing with adding a "poll" object.  The line of code you have reached here
implies your Poll class does not have a __unicode__ method, and the fix
would be to add a __unicode__ method to Poll.  However your original note
shows MyClass as having a __unicode__ method, so this traceback isn't very
helpful in identifying what is wrong in your MyClass case, since for the
model you originally showed, you would not have reached this last line of
code.

Karen

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Re: html italic tag hinders search code

[Jeff FW]

Yes, that's what I was suggesting.  Sorry for not being more clear.

As for storing the field twice, unless you're planning to have huge
amounts of records, you wouldn't really noticed any difference at
all.  Also, you can have the admin interface set to *not* display the
stripped version, so your users don't even have to know it exists.

-Jeff

On Feb 6, 3:54 pm, May  wrote:
> Creating a duplicate field without tags looks like it might be the way
> to go, then.  I just hate the redundancy of two fields of data.
>
> Thanks to both you and Jeff!
>
> May
>
> On Feb 6, 12:30 pm, Karen Tracey  wrote:
>
> > On Fri, Feb 6, 2009 at 3:05 PM, May  wrote:
>
> > > I have data entry clerks typing the data, so I cannot have them type
> > > the titles twice.
>
> > I'm quite sure Jeff wasn't suggesting having anyone type the titles in
> > twice.  Rather, when something with a title is saved, you have code (maybe
> > in a save() override) that automatically populates a "stripped" version of
> > your title field, based on the value of the title that was entered.  (There
> > is a simple strip_tags function in django.utils.html.)  Then, in the
> > database, you have both the field you have now (which contains html tags
> > like ) and a stripped version, and it is the stripped version that you
> > search, since people aren't going to be entering the html tags when they are
> > searching.
>
> > > Is there a command where I could strip the tags out
> > > after the keywords are typed but before python goes to the database to
> > > search?
>
> > ? From what you've said the  tags are in the data stored in the
> > database, not in the query keywords.  There's no way to strip the tags from
> > the database data in order to do a search.
>
> > Karen
>
>
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Re: SQLite, swedish signs

[DaSa]

The traceback:

Environment:

Request Method: POST
Request URL: http://127.0.0.1:8000/admin/polls/poll/add/
Django Version: 1.0.2 final
Python Version: 2.5.3
Installed Applications:
['django.contrib.admin',
 'django.contrib.admindocs',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.markup',
 'mysite.polls',
 'mysite.searchApp',
 'mysite.forum']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware')


Traceback:
File "C:\Python25\Lib\site-packages\django\core\handlers\base.py" in
get_response
  86. response = callback(request, *callback_args,
**callback_kwargs)
File "C:\Python25\Lib\site-packages\django\contrib\admin\sites.py" in
root
  157. return self.model_page(request, *url.split('/',
2))
File "C:\Python25\Lib\site-packages\django\views\decorators\cache.py"
in _wrapped_view_func
  44. response = view_func(request, *args, **kwargs)
File "C:\Python25\Lib\site-packages\django\contrib\admin\sites.py" in
model_page
  176. return admin_obj(request, rest_of_url)
File "C:\Python25\Lib\site-packages\django\contrib\admin\options.py"
in __call__
  191. return self.add_view(request)
File "C:\Python25\Lib\site-packages\django\db\transaction.py" in
_commit_on_success
  238. res = func(*args, **kw)
File "C:\Python25\Lib\site-packages\django\contrib\admin\options.py"
in add_view
  499. self.log_addition(request, new_object)
File "C:\Python25\Lib\site-packages\django\contrib\admin\options.py"
in log_addition
  294. object_repr = force_unicode(object),
File "C:\Python25\Lib\site-packages\django\utils\encoding.py" in
force_unicode
  52. s = unicode(str(s), encoding, errors)

Exception Type: UnicodeEncodeError at /admin/polls/poll/add/
Exception Value: 'ascii' codec can't encode character u'\xe5' in
position 6: ordinal not in range(128)


Thanks!

BR
Daniel
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Problem posting a form to two separate URLs

[potterrauzon]

Hello.

I am trying to get a form to post to two separate URLs.  I need to
save the data to my own database and I am also trying to post the data
to a URL for a company that does data tracking with it's own
database.

I realize that I could use javascript on the form template, or I could
run a cron job to sync the databases, or export a csv file for them,
but it seems like it should be possible to get this to work in my
view.

Here is the view code that sometimes works, but not reliably.

Has anyone gotten this to work?

Thanks in advance,
Ryan

=== CODE ==

def my_form_post_view(request):

if request.method == 'POST':
form = MyForm(request.POST)

if form.is_valid():

first_name = form.cleaned_data['first_name']
last_name = form.cleaned_data['last_name']
address_1 = form.cleaned_data['address_1']

# SAVE THE DATA
o = MyModel(first_name=first_name, last_name=last_name,
address_1=address_1)
o.save()

# CHANGE THE FIELD NAMES AND CREATE A DICTIONARY
data = dict(FirstName = first_name, LastName = last_name,
Address1 = address_1)

# ENCODE THE DATA
params = urllib.urlencode(data)

# SEND THE POST TO ANOTHER URL
headers = {"Content-type": "application/x-www-form-
urlencoded", "Accept": "text/plain"}
conn = httplib.HTTPConnection("www.someotherurl.com")
conn.request("POST", "/test-form/?", params, headers)

return HttpResponseRedirect("/thank-you-guide/")

else:
return render_to_response('siteapp/form_template.html',
{'form':form}, context_instance=RequestContext(request))
else:
form = MyForm()
return render_to_response('siteapp/form_template.html',
{'form':form}, context_instance=RequestContext(request))

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Re: including non-editable fields in forms?

[Margie]

Thanks Malcolm.  I think inserting it directly in the form template
will work fine for my purposes.

Margie

On Feb 9, 9:18 pm, Malcolm Tredinnick 
wrote:
> On Mon, 2009-02-09 at 21:14 -0800,Margiewrote:
> > I have a model that contains a 'created' field where 'editable' is set
> > to False in the model.
>
> > I'd like to display the created field in my form, but not allow it to
> > be modified.  I tried putting it in
> > the include list for the form, but that didn't seem to have any affect
> > (it didn't display in the form).
>
> > Is there a way to do this in a form or do I need to simply put the
> > created field into my template separate from the display of the form?
>
> You could create a form Field subclass that only displays the data and
> never validates it or inserts it into cleaned_data for the form. In
> other words, a kind of read-only for field. There are a few details that
> would have to be sorted out, but it sounds eminently possible if you
> were going to do this a lot. One day we'll eventually add support for
> read-only items in the admin and we'll have to invent something like
> that for those, I suspect.
>
> On the other hand, I've always just inserted it directly into the form
> template when I've had this kind of situation.
>
> Regards,
> Malcolm
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Re: YUI Image Uploader - OK on Firefox/Mac but not elsewhere

[phoebebright]

I'm pretty sure I have all the paths correct because the TinyMCE/
Filebrowser works ok on firefox mac, just not on any other browser.
The only setting I changed was FILEBROWSER_URL_WWW = '/site_media/
uploads/'.  At this stage I am trying to get the upload to happen in
PHP as I can get that to work, but it seems silly to have to do
that.   I will use any solution so if yours is working on multiple
browsers, maybe I should give it another go.  But not sure where to
start in fixing it!!!

Phoebe.

On Feb 10, 4:49 pm, "esatterwh...@wi.rr.com" 
wrote:
> I found the TinyMCE & filebrowser insanely easy to impliment. I would
> say 9 out of the 10 issued I had was simply a matter of defining the
> right paths.
>
> I also found that creating a symlink for the admin media folder and
> calling it 'media/' solved most of the path name issues. that way you
> can leave most of the default paths in the settings.py file and it
> just works out of the box.
>
> On Feb 9, 4:39 pm, phoebebright  wrote:
>
> > Have been trying to get a RTE plugin working that will allow upload of
> > images.  The YUI verion is almost there but will not play well with
> > browsers.
>
> > The plugin from 
> > herehttp://allmybrain.com/2008/11/06/example-yui-image-upload-with-yui-260/
> > I modified to get Javascript to make an asynchronous call to this
> > function in the view:
>
> > def uploadimage(request):
> >         try:
> >                 upload_full_path = settings.CONTENT_IMAGES
>
> >                 upload = request.FILES['image']
> >                 dest = open(os.path.join(upload_full_path, upload.name), 
> > 'wb+')
>
> >                 for chunk in upload.chunks():
> >                         dest.write(chunk)
>
> >                 dest.close()
>
> >                 result='{status:"UPLOADED",image_url:"%s%s"}' %
> > (settings.CONTENT_IMAGES_URL, upload.name)
>
> >                 return_data = HttpResponse(result,mimetype='Content-Type: 
> > text/
> > html')
>
> >         except Exception, e:
> >                 return_data = HttpResponse("Error in uploading image")
>
> >         return_data.flush()
>
> >         return return_data
>
> > The plugin was written for turbon gears/php and there is a tg example
> > here:
>
> >http://allmybrain.com/2007/10/22/yui-image-uploader-example-with-turb...
>
> > Firefox/Mac works perfectly.  Safari downloads the image instead.  No
> > version on PC appears to do anything, (but only have Mac for local
> > testing.)
> > Have tried every possible permutation of the content-type, Content-
> > Type and text/html definitely is the way to go.  Various threads on
> > python refer to the need to open the file for reading as rb to make
> > sure windows knows it is binary, but not sure how to do that as the
> > response data is already in memory.
>
> > In desperation I have also tried to implement image upload in TinyMCE
> > - can't get FileBrowser working on PC.  and FCKeditor no modifiable
> > image upload that I could find.  So I am back with YUI and hoping
> > someone can suggest something to try
>
>
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Re: YUI Image Uploader - OK on Firefox/Mac but not elsewhere

[esatterwh...@wi.rr.com]

I found the TinyMCE & filebrowser insanely easy to impliment. I would
say 9 out of the 10 issued I had was simply a matter of defining the
right paths.

I also found that creating a symlink for the admin media folder and
calling it 'media/' solved most of the path name issues. that way you
can leave most of the default paths in the settings.py file and it
just works out of the box.

On Feb 9, 4:39 pm, phoebebright  wrote:
> Have been trying to get a RTE plugin working that will allow upload of
> images.  The YUI verion is almost there but will not play well with
> browsers.
>
> The plugin from 
> herehttp://allmybrain.com/2008/11/06/example-yui-image-upload-with-yui-260/
> I modified to get Javascript to make an asynchronous call to this
> function in the view:
>
> def uploadimage(request):
>         try:
>                 upload_full_path = settings.CONTENT_IMAGES
>
>                 upload = request.FILES['image']
>                 dest = open(os.path.join(upload_full_path, upload.name), 
> 'wb+')
>
>                 for chunk in upload.chunks():
>                         dest.write(chunk)
>
>                 dest.close()
>
>                 result='{status:"UPLOADED",image_url:"%s%s"}' %
> (settings.CONTENT_IMAGES_URL, upload.name)
>
>                 return_data = HttpResponse(result,mimetype='Content-Type: 
> text/
> html')
>
>         except Exception, e:
>                 return_data = HttpResponse("Error in uploading image")
>
>         return_data.flush()
>
>         return return_data
>
> The plugin was written for turbon gears/php and there is a tg example
> here:
>
> http://allmybrain.com/2007/10/22/yui-image-uploader-example-with-turb...
>
> Firefox/Mac works perfectly.  Safari downloads the image instead.  No
> version on PC appears to do anything, (but only have Mac for local
> testing.)
> Have tried every possible permutation of the content-type, Content-
> Type and text/html definitely is the way to go.  Various threads on
> python refer to the need to open the file for reading as rb to make
> sure windows knows it is binary, but not sure how to do that as the
> response data is already in memory.
>
> In desperation I have also tried to implement image upload in TinyMCE
> - can't get FileBrowser working on PC.  and FCKeditor no modifiable
> image upload that I could find.  So I am back with YUI and hoping
> someone can suggest something to try
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Re: Filter by ForeignKey reference??

[Markus T.]

That's it - thanks a lot!!!
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0.96 to 1.0 admin conversion

[homebrew79]

I'm in the process of converting a project from 0.96 to 1.0.  The
newforms admin has me a little stumped.  The way I currently have one
of my models set up is like so:

cpip = models.ForeignKey('Cpip', edit_inline=models.TABULAR,
num_in_admin=10, num_extra_on_change=3)

That will give me 10 inlines initially and when I save will give me 3
extras.  I like the way that works because when I create the object, I
have up to 10 related objects that I want to add, but after that, I
typically only need to add one or two.

With the newforms admin, the only options that I have found are extra
and max_num.  If I set extra to 10, I get 10 inlines initially, but
when I save I get an additional 10 empties that I don't want.  I
haven't been able to find any combination of extra and max num that
works for me.

I'm sorry if this has already been answered somewhere before.  I
wasn't able to find anything after some googling.

Thanks,

Brian
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version control convention?

[Serdar T.]

Is it better to create repositories at a site-, project- or app-level?

In other words, if I implement the conventional[1] directory structure
below, is it better to place the entire site (example.com) under a
single git repository, or would it be wiser to create separate git
repos for each custom app?

Any suggestions on the best course of action (Perhaps something to add
to the conventions list)?

example.com/
   settings.py
   urls.py
   local_apps/
   custom apps written for this project (Preferably Reusable;
Probably on your PYTHONPATH)
   external_apps/
External reusable apps you are using on this project
Note: These apps can also live anywhere on your PYTHONPATH
   projects/
   dev_example/
   production_example/
   django96_example/
   manage.py, settings, urls, etc
docs/
   This will hold the documentation for your project
   static/
   -In production this will be the root of your MEDIA_URL
   css/
   js/
   images/
   tests/
   - Project level tests (Each app should also have tests)
   uploads/
   - content imgs, etc
   templates/
   - This area is used to override templates from your reusable
apps
   flatpages/
   comments/
   example/
   app1/
   app2/

[1] http://ericholscher.com/projects/reusable-app-docs/projects/overview.html
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Re: Pretty admin pages

[Ramiro Morales]

On Tue, Feb 10, 2009 at 12:38 PM, djandrow  wrote:
>
> I believe its quite akward to create a system link in XP so I tried
> copying them to myproject/media file, but it didn't like that either.
>
> Should they go in the htdocs file or what?
>

This is more an Apache question, things should be set up in a way such
that when you access, for example django/contrib/admin/media/img/arrow-down-png
(or a copy of it) can be accessed through

http://yourhost/media/img/arrow-down-png

and yes, as the "2. Or, copy the admin media files so that they live
within your Apache document root." blurb suggests, copying the
django/contrib/admin/media tree to your document root would be one way
of achieving this.

Another option would be to use the Alias and Directory apache
configuration directives
(http://httpd.apache.org/docs/2.2/mod/mod_alias.html#alias)

-- 
 Ramiro Morales

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Re: m2m field and forms

[Konstantin S]

On Feb 10, 5:51 pm, Sergey Koval  wrote:
> On Tue, Feb 10, 2009 at 1:21 PM, Konstantin S  wrote:
>
> > Hello
>
> > I have a form created from forms.ModelForm and in my model one of the
> > fields is m2m field. Now when form is displayed for that m2m filed I'd
> > like to have something that looks like checkbox where user can select
> > several alternatives. I know that I can use widgets here and there are
> > some that can be used in my case, but I don't know how do I use them
> > in case of form being generated as ModelForm ?
>
> If you want to show multiple checkboxes, use CheckboxSelectMultiple widget.
>
> Sample code:
>
> class MyForm(forms.ModelForm):
>     my_field = fields.ModelMultipleChoiceField(queryset=your_query_set,
> widget=forms.CheckboxSelectMultiple)
>

Thanks, that's exactly I was looking for. I didn't know that fields
may be overwritten if the form is derived from a forms.ModelForm class
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Re: A solution for django/postgresql transaction problem

[Karen Tracey]

On Tue, Feb 10, 2009 at 9:58 AM, azer  wrote:

>
> Hi,
> I modified django's db/backends/postgresq_psycopg2/base.py and fixed
> the problem.I added this lines before "cursor = self.connection.cursor
> ()":
>
># if transaction is broken, run rollback method
>if self.connection.get_transaction_status()==3:
>self.connection.rollback()
>#
>
> I hope it will be useful for you too.Also, I've written a blog post
> about this;
>
> http://berraksular.blogspot.com/2009/02/transaction-problem-of-django-and.html
>

Some description of the problem you are trying to solve here would have been
useful.  Based on what the code does, I guess you are trying to fix the
problem that once some sort of database error is encountered, PostgreSQL
refuses to process any subsequent commands in that transaction and instead
returns another error along the lines of "current transaction is aborted,
commands ignored until end of transaction block"?

I don't believe what you have proposed here is a good solution.  When the
original error occurs, an exception is raised.  In order for your code to
get to the point of issuing another SQL command in that transaction, some
code had to catch that exception and decide to continue on instead of
abandoning whatever is being attempted.  It is the code that catches the
original exception and decides to proceed on anyway that should be
responsible for restoring the connection to a state where SQL commands can
be issued.  That is the code that has enough context to know it is safe to
proceed in the face of whatever error caused the exception, and to know that
rolling back whatever has been done so far and continuing on is OK.

Burying the rollback in the driver essentially hides an error from the
calling code.  This level of code has no context for knowing that it is safe
to proceed in this situation, rather the reverse.  All this code knows is
that some database error has occurred, and whatever code caught the
resulting exception did not restore the connection to a usable state, which
rather implies the code that caught the exception didn't fully understand
the exception it caught.  That's not a situation that should be silently
ignored.

Karen

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Re: Question about Filtering on a Related model (I think) - with example code.

[Daniel Roseman]

On Feb 10, 2:25 pm, Almost George 
wrote:
> On Feb 10, 1:30 am, Daniel Roseman 
> wrote:

> That doesn't seem to work. Here's my manage.py shell session, which
> appears as I expected it to: (hopefully email clients/google won't
> screw up the quoting, otherwise seehttp://dpaste.com/118932/)
>
> >>> from xmx.models import Band
> >>> b = Band.objects.get(name__startswith='r')
> >>> b
> 
> >>> b.get_upcoming_events
>
>  
> b.get_upcoming_events()
>
> Traceback (most recent call last):
>   File "", line 1, in 
>   File "//x/django_projects/../xmx/models.py", line 39, in
> get_upcoming_events
>     return self.event.eventoccurrence_set.filter
> (start__gte=datetime.today())
> AttributeError: 'Band' object has no attribute 'event'
>
> - Any other suggestions?

Aah, sorry, didn't read the models properly. Try this:

events = EventOccurrence.objects.filter(
start__gte=datetime.today(),
event__bands=self
)

Not sure if that will work, but I often find that it helps to turn a
query around so you start with the model you want, and filter it back
to include the related object you have, if you see what I mean.
--
DR.
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Re: Question about Filtering on a Related model (I think) - with example code.

[Almost George]

On Feb 10, 8:25 am, Almost George 
wrote:
> On Feb 10, 1:30 am, Daniel Roseman 
> wrote:
>
>
>
> > On Feb 10, 5:03 am, Almost George 
> > wrote:
>
> > > On the following example models (actual models, removed of cruft that
> > > doesn't seem to apply) I'd like to add a "get_upcoming_events" method
> > > to Band like the one on Venue, but because of the relationship I'm not
> > > sure how to use the API/filter. (An Event has the same bands, at
> > > possibly different occurrences, whereas each Occurrence happens at a
> > > particular Venue - if the models/structure needed justifying).
>
> > > [ code highlighted @ dpaste:http://dpaste.com/118817/]
>
> > > class Event(models.Model):
> > >     name    = models.CharField(max_length=50, unique=True)
> > >     bands   = models.ManyToManyField(Band)
>
> > > class EventOccurrence(models.Model):
> > >     name    = models.CharField(max_length=50, blank=True)
> > >     venue   = models.ForeignKey(Venue)
> > >     event = models.ForeignKey(Event)
> > >     start = models.DateField()
> > >     end = models.DateField()
>
> > > class Band(models.Model):
> > >     admin_approved = models.BooleanField(default=False)
> > >     name = models.CharField(max_length=50, unique=True)
>
> > >     def get_upcoming_events(self):
> > >         # How do I get Events, where the EventOccurrence.start is
> > > filtered
> > >         # the same as this method on the Venue model?
> > >         pass
>
> > > class Venue(models.Model):
> > >     name = models.CharField(max_length=50)
>
> > >     def get_upcoming_events(self):
> > >         return self.eventoccurrence_set.filter
> > > (start__gte=datetime.today())
>
> > Looks like you could just use the same filter as in Venue, just adding
> > 'event' before:
> >     self.event.eventoccurence_set.filter(...)
> > --
> > DR.
>
> That doesn't seem to work. Here's my manage.py shell session, which
> appears as I expected it to: (hopefully email clients/google won't
> screw up the quoting, otherwise seehttp://dpaste.com/118932/)
>
> >>> from xmx.models import Band
> >>> b = Band.objects.get(name__startswith='r')
> >>> b
> 
> >>> b.get_upcoming_events
>
>  
> b.get_upcoming_events()
>
> Traceback (most recent call last):
>   File "", line 1, in 
>   File "//x/django_projects/../xmx/models.py", line 39, in
> get_upcoming_events
>     return self.event.eventoccurrence_set.filter
> (start__gte=datetime.today())
> AttributeError: 'Band' object has no attribute 'event'
>
> - Any other suggestions?

I'm going to wrap this up with the (a?) correct answer:
I was going about this backwards by going about it in a forward way. I
should have been thinking backwards, in other words.

I simply changed the Band model to have this method:

def get_upcoming_events(self):
"""
Get the list of upcoming events for this band.
"""
#return self.event_set.eventoccurrence_set.filter
(start__gte=datetime.today())
return EventOccurrence.objects.filter
(event__bands__id=self.id)

Starting with what I wanted, instead of "where I was".

If this is not the correct way (for intuitive or other reasons) please
let me know. Just wanted to make sure I put a "solution" to the
problem I posted.
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A solution for django/postgresql transaction problem

[azer]

Hi,
I modified django's db/backends/postgresq_psycopg2/base.py and fixed
the problem.I added this lines before "cursor = self.connection.cursor
()":

# if transaction is broken, run rollback method
if self.connection.get_transaction_status()==3:
self.connection.rollback()
#

I hope it will be useful for you too.Also, I've written a blog post
about this;
http://berraksular.blogspot.com/2009/02/transaction-problem-of-django-and.html

regards
azer

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Re: Key Erro: 'perms' whenever I try and view a table in Admin

[Karen Tracey]

On Tue, Feb 10, 2009 at 9:46 AM, merric  wrote:

>
> Help! Completely stuck with this one.  Everytime I try to view any
> table in the Admin I get an error.
>
> I am getting a KEY ERROR with exception value of 'perms':
>
> Exception Location: C:\Python25\Lib\site-packages\django-trunk\django
> \template\context.py in __getitem__, line 43
>
> Anybody have any ideas what might be causing this?
>

Whatever you changed right before it started happening likely caused it.
You've given no context for what you've been doing so it's a little hard to
guess what that might have been.  You've also left out the full traceback,
which might give a hint.

Karen

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Re: m2m field and forms

[Sergey Koval]

On Tue, Feb 10, 2009 at 1:21 PM, Konstantin S  wrote:

>
> Hello
>
> I have a form created from forms.ModelForm and in my model one of the
> fields is m2m field. Now when form is displayed for that m2m filed I'd
> like to have something that looks like checkbox where user can select
> several alternatives. I know that I can use widgets here and there are
> some that can be used in my case, but I don't know how do I use them
> in case of form being generated as ModelForm ?

If you want to show multiple checkboxes, use CheckboxSelectMultiple widget.

Sample code:

class MyForm(forms.ModelForm):
my_field = fields.ModelMultipleChoiceField(queryset=your_query_set,
widget=forms.CheckboxSelectMultiple)

--
Serge

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Key Erro: 'perms' whenever I try and view a table in Admin

[merric]

Help! Completely stuck with this one.  Everytime I try to view any
table in the Admin I get an error.

I am getting a KEY ERROR with exception value of 'perms':

Exception Location: C:\Python25\Lib\site-packages\django-trunk\django
\template\context.py in __getitem__, line 43

Anybody have any ideas what might be causing this?

Cheers

MerMer



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Re: Pretty admin pages

[djandrow]

I believe its quite akward to create a system link in XP so I tried
copying them to myproject/media file, but it didn't like that either.

Should they go in the htdocs file or what?

Thanks,

Andrew
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Re: Question about Filtering on a Related model (I think) - with example code.

[Almost George]

On Feb 10, 1:30 am, Daniel Roseman 
wrote:
> On Feb 10, 5:03 am, Almost George 
> wrote:
>
>
>
> > On the following example models (actual models, removed of cruft that
> > doesn't seem to apply) I'd like to add a "get_upcoming_events" method
> > to Band like the one on Venue, but because of the relationship I'm not
> > sure how to use the API/filter. (An Event has the same bands, at
> > possibly different occurrences, whereas each Occurrence happens at a
> > particular Venue - if the models/structure needed justifying).
>
> > [ code highlighted @ dpaste:http://dpaste.com/118817/]
>
> > class Event(models.Model):
> >     name    = models.CharField(max_length=50, unique=True)
> >     bands   = models.ManyToManyField(Band)
>
> > class EventOccurrence(models.Model):
> >     name    = models.CharField(max_length=50, blank=True)
> >     venue   = models.ForeignKey(Venue)
> >     event = models.ForeignKey(Event)
> >     start = models.DateField()
> >     end = models.DateField()
>
> > class Band(models.Model):
> >     admin_approved = models.BooleanField(default=False)
> >     name = models.CharField(max_length=50, unique=True)
>
> >     def get_upcoming_events(self):
> >         # How do I get Events, where the EventOccurrence.start is
> > filtered
> >         # the same as this method on the Venue model?
> >         pass
>
> > class Venue(models.Model):
> >     name = models.CharField(max_length=50)
>
> >     def get_upcoming_events(self):
> >         return self.eventoccurrence_set.filter
> > (start__gte=datetime.today())
>
> Looks like you could just use the same filter as in Venue, just adding
> 'event' before:
>     self.event.eventoccurence_set.filter(...)
> --
> DR.

That doesn't seem to work. Here's my manage.py shell session, which
appears as I expected it to: (hopefully email clients/google won't
screw up the quoting, otherwise see http://dpaste.com/118932/ )

>>> from xmx.models import Band
>>> b = Band.objects.get(name__startswith='r')
>>> b

>>> b.get_upcoming_events
>
>>> b.get_upcoming_events()
Traceback (most recent call last):
  File "", line 1, in 
  File "//x/django_projects/../xmx/models.py", line 39, in
get_upcoming_events
return self.event.eventoccurrence_set.filter
(start__gte=datetime.today())
AttributeError: 'Band' object has no attribute 'event'


- Any other suggestions?
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Re: Forms, fields and widgets

[Sergey Koval]

On Tue, Feb 10, 2009 at 10:14 AM, Malcolm Tredinnick <
malc...@pointy-stick.com> wrote:

> Your constraints are a bit arbitrary and, in fact, overly-restrictive.
> In particular the "without changing ModelForm" wish is just that: a
> hope, not something that falls out of the design as "it looks like this
> must be possible." A ModelForm is a form that maps each model field to a
> particular form field. That's all. It's not a prototype for arbitrary
> model -> form mappings. Rather, it implements one particular sort of
> (commonly useful) mapping.

Indeed. And it also has special rules for foreign and m2m model fields. At
the moment, for foreign key, model instance will be replaced with model id.
And that's a bit restrictive.


> I wouldn't be thinking about this from the widget level. Widgets are
> just the rendering side. The better question is how to construct a form
> class that allows you to specify form fields which can work with this
> information. You're asking how to create a particular sort of form field
> (Django-form field, not HTML-form field) here. The final rendering, via
> Django-form widgets, will almost certainly just use normal (existing)
> widgets.

  That's correct. I just want to have possibility for my custom form fields
to participate in initial_data generation process (that's how ModelForm
captures data from the model instance).
  Problem is in asymmetry: field which surely works only with models
(ModelChoiceField/ModelMultipleChoiceField) is used to convert raw data
(model id) to appropriate model instance, but not vice a versa. So I can
create field that will "clean" raw data to model of my choice with some
additional logic applied, but in order to do reverse conversion (from model
to raw data) - I have to change ModelForm itself. That's what was bugging me
:-)


> I haven't worked out an answer, in terms of code, to your problem yet,
> beyond thinking it didn't seem to hard. I'll try to find some time
> tonight to work out some specifics and post tomorrow if nobody else
> comes up with a passable solution. But, in the interests of
> understanding the issue properly, I would suggest you spend a bit more
> time thinking about this yourself, based on the lines I've written
> above, rather than hoping somebody might give you the answer outright in
> such a short space of time.
>
No need to, thank you. I know how to do it (by overriding default ModelForm
behavior). It was more of the

Thanks,
Serge.

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Re: trouble with template tag

[Daniel Roseman]

On Feb 10, 2:07 pm, Bobby Roberts  wrote:
> Hi.  I have the following template tag:
>
> @register.filter(name='elementtotext')
> @stringfilter
> def elementtotext(string):
>     itext='Unknown'
>     if string=='DR':
>         itext='Door'
>     if string=='FL':
>         itext='Flooring'
>     if string=='FO':
>         itext='Foundation'
>     if string=='FR':
>         itext='Framing'
>     if string=='GR':
>         itext='Grounds'
>     if string=='HV':
>         itext='HVAC / Utilities'
>     if string=='MI':
>         itext='Miscellaneous'
>     if string=='RF':
>         itext='Roof'
>     if string=='WM':
>         itext='Wall Material'
>     if string=='WI':
>         itext='Window'
>     return itext
>
> The purpose of the tag is to take a record set field value and return
> the text equivalent of that value.  My field name in this example is
> tm.element.
>
> I can print the raw code to the screen fine but I'm having trouble
> running it through my template tag.  Can someone tell me the proper
> syntax?
>
> I'm trying {% elementtotext tm.element %} and it errors out.
>
> I'm using python2.5 and django .97 or thereabout.

This is a filter, not a tag. So you just use the filter syntax on a
variable:

{{ tm.element|elementtotext }}

By the way, you might find it easier to use a dictionary to map your
template strings, rather than a whole load of if/else blocks:
mapping = {
  'DR': 'door',
(etc)
}
itext = mapping.get(string, 'unknown')
--
DR.
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trouble with template tag

[Bobby Roberts]

Hi.  I have the following template tag:


@register.filter(name='elementtotext')
@stringfilter
def elementtotext(string):
itext='Unknown'
if string=='DR':
itext='Door'
if string=='FL':
itext='Flooring'
if string=='FO':
itext='Foundation'
if string=='FR':
itext='Framing'
if string=='GR':
itext='Grounds'
if string=='HV':
itext='HVAC / Utilities'
if string=='MI':
itext='Miscellaneous'
if string=='RF':
itext='Roof'
if string=='WM':
itext='Wall Material'
if string=='WI':
itext='Window'
return itext

The purpose of the tag is to take a record set field value and return
the text equivalent of that value.  My field name in this example is
tm.element.

I can print the raw code to the screen fine but I'm having trouble
running it through my template tag.  Can someone tell me the proper
syntax?

I'm trying {% elementtotext tm.element %} and it errors out.

I'm using python2.5 and django .97 or thereabout.
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Re: comparisons with java framework

[Alex Gaynor]

On Tue, Feb 10, 2009 at 6:41 AM, igorlash  wrote:

>
> > If I have correctly interpreted you correctly, this was an
> > extraordinarily long-winded way to ask "Is there anywhere I can
> > download a PDF of the Django documentation, and if not, why not?"
>
> I've not asked "Is there anywhere I can
> download a PDF of the Django documentation, and if not, why not?"
> because I know the answer.
>
>
> > Time is an extremely limited resource on any volunteer project, and
> > the core developers have made the decision that having an offline PDF
> > version of the docs is a lower priority to improving Django as a tool,
> > and improving the documentation that ships with Django and is
> > available as an online resource.
>
> The django community should allow to download html version of
> documentation to make this project more attractive , I'm sure it
> doesn't take a lot of time to generate it on configured environment.
> But a lot of time can be saved on django users' side.More over it can
> be critical on making decision between this or other framework.
>
>
> On Feb 10, 1:09 pm, Russell Keith-Magee 
> wrote:
> > On Tue, Feb 10, 2009 at 4:21 PM, igorlash  wrote:
> >
> > > Hi everybody.
> > > I'm java developer , and I like comparing web frameworks.
> > > Members of django community talk a lot about easiness of django
> > > especially comparing with java frameworks. But they have not compared
> > > all aspects. And I want to compare one of them.
> > > As user of good web framework I want to have documentation on my
> > > computer and have possibility to read it offline.
> > > Let's compare spring framework and django.
> > > To get spring documentation I can download spring , and this zip file
> > > contains apis , reference manuals (in PDF and HTML formats). Or I can
> > > visit this pagehttp://www.springsource.org/documentationand download
> > > PDF or view HTML online (we will not take viewing HTML online into
> > > account , I've mentioned about it only to be honest).
> >
> > > And now most interesting , let take a look at django. When you
> > > download django you have documentation in ReStructured Text format
> > >http://docs.djangoproject.com/en/dev/faq/general/#how-can-i-download-..
> ..
> > > This format is not very readable so I've decided to convert it to html
> > > or something other.
> > > I was very surprised when I found makefile in the root of doc folder.
> > > GREAT , to read documentation offline we need to install make.But not
> > > all python developers , especially web developers know something about
> > > make. Ok , I've installed make. But after that I found out I need to
> > > install one more tool Sphinx  But Sphinx requires some dependencies
> > > and the easiest way to install them all is installing easy_install. Ok
> > > I've installed easy_install and Sphinx but after that I've got error
> > > about absence of some module (djangodocs).On this stage I gave up.
> >
> > > It's very interesting why I can't download django documentation in the
> > > same way as I can download spring documentation or python
> > > documentation (http://docs.python.org/download.html) ?
> >
> > If I have correctly interpreted you correctly, this was an
> > extraordinarily long-winded way to ask "Is there anywhere I can
> > download a PDF of the Django documentation, and if not, why not?"
> >
> > No - we don't provide a PDF version of the documentation. This idea
> > has been proposed a few times in Django's history, but it has been
> > rejected in favour of providing the tools to let people build offline
> > versions by themselves.
> >
> > Django's documentation is constantly improving, even for old versions.
> > Producing (and keeping up to date) PDF versions takes time. Yes, this
> > process could be automated, but building and maintaining the framework
> > to allow for automated documentation builds would take time.
> >
> > Time is an extremely limited resource on any volunteer project, and
> > the core developers have made the decision that having an offline PDF
> > version of the docs is a lower priority to improving Django as a tool,
> > and improving the documentation that ships with Django and is
> > available as an online resource.
> >
> > If you are having difficulties building the docs into a standalone
> > format, feel free to ask questions on this mailing list. We would also
> > welcome any suggestions for improvements to the documentation for this
> > process of building the documentation.
> >
> > Yours,
> > Russ Magee %-)
>
> >
>
Every checkout of the Django source tree includes the full set of docs,
which you are able to build into HTML, or Latex, or PDF or what have you
using Sphinx.  Personally I always keep a local copy of the HTML docs built.

Alex

-- 
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say it." --Voltaire
"The people's good is the highest law."--Cicero

Re: comparisons with java framework

[igorlash]

> If I have correctly interpreted you correctly, this was an
> extraordinarily long-winded way to ask "Is there anywhere I can
> download a PDF of the Django documentation, and if not, why not?"

I've not asked "Is there anywhere I can
download a PDF of the Django documentation, and if not, why not?"
because I know the answer.


> Time is an extremely limited resource on any volunteer project, and
> the core developers have made the decision that having an offline PDF
> version of the docs is a lower priority to improving Django as a tool,
> and improving the documentation that ships with Django and is
> available as an online resource.

The django community should allow to download html version of
documentation to make this project more attractive , I'm sure it
doesn't take a lot of time to generate it on configured environment.
But a lot of time can be saved on django users' side.More over it can
be critical on making decision between this or other framework.


On Feb 10, 1:09 pm, Russell Keith-Magee 
wrote:
> On Tue, Feb 10, 2009 at 4:21 PM, igorlash  wrote:
>
> > Hi everybody.
> > I'm java developer , and I like comparing web frameworks.
> > Members of django community talk a lot about easiness of django
> > especially comparing with java frameworks. But they have not compared
> > all aspects. And I want to compare one of them.
> > As user of good web framework I want to have documentation on my
> > computer and have possibility to read it offline.
> > Let's compare spring framework and django.
> > To get spring documentation I can download spring , and this zip file
> > contains apis , reference manuals (in PDF and HTML formats). Or I can
> > visit this pagehttp://www.springsource.org/documentationand download
> > PDF or view HTML online (we will not take viewing HTML online into
> > account , I've mentioned about it only to be honest).
>
> > And now most interesting , let take a look at django. When you
> > download django you have documentation in ReStructured Text format
> >http://docs.djangoproject.com/en/dev/faq/general/#how-can-i-download-
> > This format is not very readable so I've decided to convert it to html
> > or something other.
> > I was very surprised when I found makefile in the root of doc folder.
> > GREAT , to read documentation offline we need to install make.But not
> > all python developers , especially web developers know something about
> > make. Ok , I've installed make. But after that I found out I need to
> > install one more tool Sphinx  But Sphinx requires some dependencies
> > and the easiest way to install them all is installing easy_install. Ok
> > I've installed easy_install and Sphinx but after that I've got error
> > about absence of some module (djangodocs).On this stage I gave up.
>
> > It's very interesting why I can't download django documentation in the
> > same way as I can download spring documentation or python
> > documentation (http://docs.python.org/download.html) ?
>
> If I have correctly interpreted you correctly, this was an
> extraordinarily long-winded way to ask "Is there anywhere I can
> download a PDF of the Django documentation, and if not, why not?"
>
> No - we don't provide a PDF version of the documentation. This idea
> has been proposed a few times in Django's history, but it has been
> rejected in favour of providing the tools to let people build offline
> versions by themselves.
>
> Django's documentation is constantly improving, even for old versions.
> Producing (and keeping up to date) PDF versions takes time. Yes, this
> process could be automated, but building and maintaining the framework
> to allow for automated documentation builds would take time.
>
> Time is an extremely limited resource on any volunteer project, and
> the core developers have made the decision that having an offline PDF
> version of the docs is a lower priority to improving Django as a tool,
> and improving the documentation that ships with Django and is
> available as an online resource.
>
> If you are having difficulties building the docs into a standalone
> format, feel free to ask questions on this mailing list. We would also
> welcome any suggestions for improvements to the documentation for this
> process of building the documentation.
>
> Yours,
> Russ Magee %-)

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Re: Deploying Django tutorial part 4, redirecting problem, apache error

[a...@amos-site.org.uk]

Where exactly do you put this I'm guessing in the file, but a bit of
context would be appreciated.

On Jan 19, 7:17 am, Adam Yee  wrote:
> Success.  I added
>
> 'script_name': request.META['SCRIPT_NAME']
>
> into the context of object_detail() in django's generic views
> list_detail.py.  Here's the modified form tag to the polls_detail.html
> template:
>
>  method="post">
>
> Note removing the / before {{ script_name }}
>
> Just to reiterate what Preston said, please share other solutions.
>
> On Jan 18, 8:13 pm, Adam Yee  wrote:
>
> > On Jan 18, 7:39 am, ptone  wrote:
>
> > > In thetutorial, the form action in the poll_detail template is
> > > hardcoded to "/polls/..."
>
> > > So the browser is doing what's been explicitly asked of it, despite
> > > Django doing its best to deal gracefully with your mounting the app
> > > at /mysite.
>
> > > In my own newcomer approach, the way I found to work around this is to
> > > pass in the script name into the context that goes to the template in
> > > the render_to_response line of the view
>
> > > 'script_name':request.META['SCRIPT_NAME']
>
> > > and then use that in the form action URL:
>
> > >  > > method="post">
>
> > Preston, thanks for pointing this out.  You're right about the url
> > being hardcoded and the prefix not being passed.  I played around with
> > your request.META['SCRIPT_NAME'] suggestion.  I can't figure out how
> > to pass the initial 'script_name' to the poll_detail before trying to
> > vote.  In other words, it seems like I would need to include
> > 'script_name' in the context passed to the generic view
> > (object_detail) before it can properly be used in the form.
>
> > If I add an {% if script_name %} in the poll_detail template or just a
> > {{ script_name }}, it would need to be rendered before accessing the
> > vote view.  Maybe you can ellaborate on your method of getting django
> > to recognize the prefix.  Portability is looking difficult at this
> > point.  Thanks to all for your help.
>
> > > This proobably means a // in the URL if you mount your site at /, but
> > > I think most browsers and servers won't care about that extra /
>
> > > I welcome anyone pointing out a better way to make the form action
> > > more "portable" in projects...
>
> > > -Preston
>
> > > On Jan 17, 7:53 pm, Adam Yee  wrote:
>
> > > > It was a slam dunk for completing thetutorialin the development
> > > > server, but I can't figure out this issue I'm having with the generic
> > > > views while using myapacheserver.  I'm unable to get the vote view
> > > > toredirectcorrectly.
>
> > > > Myapacheerror seen here with both urls.py and views.py.  Theapache
> > > > config is at the bottom.
>
> > > >http://dpaste.com/110275/
>
> > > > Voting (hiting the vote button) with or without a radio button
> > > > selected is redirecting me tohttp://127.0.0.1/polls/1/vote/which
> > > > gives me a 404 (and not in django's debug format) instead of ...mysite/
> > > > polls/1/vote/.
>
> > > > However, going in the backdoor way and manually typing 
> > > > inhttp://127.0.0.1/mysite/polls/1/vote/takesmethroughthe vote view
> > > > KeyError exception saying "You didn't select a choice" and displays
> > > > the page.  I'm also able to access the results URL manually.  So I'm
> > > > thinking the problem lies in either the views.py, my urlconfs or
> > > > something with my wsgiapacheconfig.
>
> > > > Can anyone see what I'm missing?- Hide quoted text -
>
> > > - Show quoted text -- Hide quoted text -
>
> > - Show quoted text -- Hide quoted text -
>
> > - Show quoted text -

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Re: Group By and aggregation

[Alessandro]

2009/2/10 Russell Keith-Magee 

>
>
> i.e., plural modules, not singular module, in the Max lookup. It's the
> reverse lookup name for the module relationship on Module_scheme. For
> future reference, the message on the FieldError tells you the right
> name - modules.



You're great. It works. Thank you so much!


-- 
Alessandro Ronchi
Skype: aronchi
http://www.alessandroronchi.net

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Re: Group By and aggregation

[Russell Keith-Magee]

On Tue, Feb 10, 2009 at 8:43 PM, Alessandro  wrote:
>
>
> 2009/2/10 Russell Keith-Magee 
>>
>>
>> However, if you're using Django trunk, what you want is:
>>
>> >>> from django.db.models import Max
>> >>> qs =
>> >>> Module_scheme.objects.filter(plant=3).annotate(max_energy_tot=Max('module__energy_tot'))
>> >>> for mod in qs:
>> ...print mod.id, mod.max_energy_tot
>>
>> That is - retrieve a list of Module_scheme objects associated with
>> plant 3, and annotate each one of which is annotated with the maximum
>> of the energy_tot of the modules related to the Module_scheme. The
>> maximum is provided as an extra attribute on each of the Module_scheme
>> instance.
>
> I cannot do this because I have a ForeignKey from Module to Module_Scheme,
> and your first line returns
>
> FieldError: Cannot resolve keyword 'module' into field. Choices are: id,
> jbox, module_number, modules, plant, rack_number

Apologies - I misread the name of your class. The query should read:

Module_scheme.objects.filter(plant=3).annotate(max_energy_tot=Max('modules__energy_tot'))

i.e., plural modules, not singular module, in the Max lookup. It's the
reverse lookup name for the module relationship on Module_scheme. For
future reference, the message on the FieldError tells you the right
name - modules.

Yours,
Russ Magee %-)

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Re: Group By and aggregation

[Alessandro]

2009/2/10 Russell Keith-Magee 

>
>
> However, if you're using Django trunk, what you want is:
>
> >>> from django.db.models import Max
> >>> qs =
> Module_scheme.objects.filter(plant=3).annotate(max_energy_tot=Max('module__energy_tot'))
> >>> for mod in qs:
> ...print mod.id, mod.max_energy_tot
>
> That is - retrieve a list of Module_scheme objects associated with
> plant 3, and annotate each one of which is annotated with the maximum
> of the energy_tot of the modules related to the Module_scheme. The
> maximum is provided as an extra attribute on each of the Module_scheme
> instance.


I cannot do this because I have a ForeignKey from Module to Module_Scheme,
and your first line returns

FieldError: Cannot resolve keyword 'module' into field. Choices are: id,
jbox, module_number, modules, plant, rack_number


Can I solve this problem?

-- 
Alessandro Ronchi
Skype: aronchi
http://www.alessandroronchi.net

SOASI Soc.Coop. - www.soasi.com
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Re: Group By and aggregation

[Russell Keith-Magee]

On Tue, Feb 10, 2009 at 6:47 PM, Alessandro Ronchi
 wrote:
> I have to get the max value of a model grouped by a field.
>
> The RAW SQL query is this:
>
> SELECT max(energy_tot) FROM fotovoltaico_modules,fotovoltaico_module_scheme
> WHERE fotovoltaico_module_scheme.plant_id = 3 AND
> fotovoltaico_modules.scheme_id = fotovoltaico_module_scheme.id
> GROUP BY fotovoltaico_modules.scheme_id;
>
> I haven't found any way to make the aggregation work with the group by.
>
> This is my model:
> http://dpaste.com/118868/

If you're using Django v1.0.X, you're on your own. Aggregates don't
really exist in v1.0; you will need to use custom SQL.

However, if you're using Django trunk, what you want is:

>>> from django.db.models import Max
>>> qs = 
>>> Module_scheme.objects.filter(plant=3).annotate(max_energy_tot=Max('module__energy_tot'))
>>> for mod in qs:
...print mod.id, mod.max_energy_tot

That is - retrieve a list of Module_scheme objects associated with
plant 3, and annotate each one of which is annotated with the maximum
of the energy_tot of the modules related to the Module_scheme. The
maximum is provided as an extra attribute on each of the Module_scheme
instance.

This will return full Module_scheme objects, rather than just the
Maxima like your sample SQL. If you want to restrict the columns
returned, you can do that by using the values() clause on the query.

> I've tried also:
> qs = Modules.objects.filter(scheme__plant=3).order_by("-time")
> qs.query.group_by = ["fotovoltaico_modules.scheme_id"]

You shouldn't ever need to touch qs.query as an end user. That is
internal logic, and is therefore not guaranteed to be backwards
compatible API. There be dragons. :-)

Yours,
Russ Magee %-)

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m2m field and forms

[Konstantin S]

Hello

I have a form created from forms.ModelForm and in my model one of the
fields is m2m field. Now when form is displayed for that m2m filed I'd
like to have something that looks like checkbox where user can select
several alternatives. I know that I can use widgets here and there are
some that can be used in my case, but I don't know how do I use them
in case of form being generated as ModelForm ?

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Re: Pretty admin pages

[Ramiro Morales]

On Mon, Feb 9, 2009 at 10:07 PM, djandrow  wrote:
>
> Hello all,
>
> I have just set up the admin pages for my site and if i use the built
> in server i get the admin with the nice templates, but if I display it
> on mod_python I just get the plain text, which is pretty hard to work
> with.
>
> I have these set up in the conf:
>
> 
>SetHandler None
> 
>
> 
>SetHandler None
> 
>
> and my setting py has:
>
> MEDIA_ROOT = ''
> MEDIA_URL = ''
> ADMIN_MEDIA_PREFIX = '/media/'
>
> what am i doing wrong or what have i missed?
>

This is described in the documentation:

http://docs.djangoproject.com/en/dev/howto/deployment/modpython/#id3

You should be sure the django/contrib/admin/media/
directory from the Django source code tree is published by Apache
at the URL set by the ADMN_MEDIA_PREFIX setting (/media
in your case).

-- 
 Ramiro Morales

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Re: comparisons with java framework

[Russell Keith-Magee]

On Tue, Feb 10, 2009 at 4:21 PM, igorlash  wrote:
>
> Hi everybody.
> I'm java developer , and I like comparing web frameworks.
> Members of django community talk a lot about easiness of django
> especially comparing with java frameworks. But they have not compared
> all aspects. And I want to compare one of them.
> As user of good web framework I want to have documentation on my
> computer and have possibility to read it offline.
> Let's compare spring framework and django.
> To get spring documentation I can download spring , and this zip file
> contains apis , reference manuals (in PDF and HTML formats). Or I can
> visit this page http://www.springsource.org/documentation and download
> PDF or view HTML online (we will not take viewing HTML online into
> account , I've mentioned about it only to be honest).
>
> And now most interesting , let take a look at django. When you
> download django you have documentation in ReStructured Text format
> http://docs.djangoproject.com/en/dev/faq/general/#how-can-i-download-the-django-documentation-to-read-it-offline.
> This format is not very readable so I've decided to convert it to html
> or something other.
> I was very surprised when I found makefile in the root of doc folder.
> GREAT , to read documentation offline we need to install make.But not
> all python developers , especially web developers know something about
> make. Ok , I've installed make. But after that I found out I need to
> install one more tool Sphinx  But Sphinx requires some dependencies
> and the easiest way to install them all is installing easy_install. Ok
> I've installed easy_install and Sphinx but after that I've got error
> about absence of some module (djangodocs).On this stage I gave up.
>
> It's very interesting why I can't download django documentation in the
> same way as I can download spring documentation or python
> documentation (http://docs.python.org/download.html) ?

If I have correctly interpreted you correctly, this was an
extraordinarily long-winded way to ask "Is there anywhere I can
download a PDF of the Django documentation, and if not, why not?"

No - we don't provide a PDF version of the documentation. This idea
has been proposed a few times in Django's history, but it has been
rejected in favour of providing the tools to let people build offline
versions by themselves.

Django's documentation is constantly improving, even for old versions.
Producing (and keeping up to date) PDF versions takes time. Yes, this
process could be automated, but building and maintaining the framework
to allow for automated documentation builds would take time.

Time is an extremely limited resource on any volunteer project, and
the core developers have made the decision that having an offline PDF
version of the docs is a lower priority to improving Django as a tool,
and improving the documentation that ships with Django and is
available as an online resource.

If you are having difficulties building the docs into a standalone
format, feel free to ask questions on this mailing list. We would also
welcome any suggestions for improvements to the documentation for this
process of building the documentation.

Yours,
Russ Magee %-)

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Re: Prepoplulate admin form with previously entered data

[Marco Bazzani]

here is how
http://docs.djangoproject.com/en/dev/ref/contrib/admin/#save-as

On Tue, Feb 10, 2009 at 12:04 PM, Marco Bazzani
 wrote:
> you can open a patient modify it and save it as new
>
> On Tue, Feb 10, 2009 at 4:00 AM, Adam Woodbeck  
> wrote:
>>
>> Would it be possible to extend the ModelForm for my encounter model,
>> automatically filling the form when I add a new entry?
>>
>> On Feb 9, 9:51 pm, Adam Woodbeck  wrote:
>>> I'm building my first Django app and I've run into a roadblock.  I'm
>>> hoping someone with more knowledge of django 1.0 can point me in the
>>> right direction.
>>>
>>> What the app does is allow me to enter SOAP notes for each of my daily
>>> patient encounters.  A good amount of the data I enter from visit to
>>> visit is redundant.  So I'm looking to cut down on the amount of
>>> typing required each time I add a new patient encounter record through
>>> the admin interface.  Is there any way to prepopulate a patient's
>>> encounter in the admin interface using data from the patient's
>>> previous encounter?
>>>
>>> Adam
>> >>
>>
>

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Re: Prepoplulate admin form with previously entered data

[Marco Bazzani]

you can open a patient modify it and save it as new

On Tue, Feb 10, 2009 at 4:00 AM, Adam Woodbeck  wrote:
>
> Would it be possible to extend the ModelForm for my encounter model,
> automatically filling the form when I add a new entry?
>
> On Feb 9, 9:51 pm, Adam Woodbeck  wrote:
>> I'm building my first Django app and I've run into a roadblock.  I'm
>> hoping someone with more knowledge of django 1.0 can point me in the
>> right direction.
>>
>> What the app does is allow me to enter SOAP notes for each of my daily
>> patient encounters.  A good amount of the data I enter from visit to
>> visit is redundant.  So I'm looking to cut down on the amount of
>> typing required each time I add a new patient encounter record through
>> the admin interface.  Is there any way to prepopulate a patient's
>> encounter in the admin interface using data from the patient's
>> previous encounter?
>>
>> Adam
> >
>

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user env needed in apache with mod_wsgi

[Alan]

Hi list,
My problem is that: since when using apache + mod_wsgi I got a neutral env
for my server (e.g. PATH=/usr/bin:/bin) but in the end what I need is all
the envs that is in a particular $HOME/.bashrc file in order to when server
spawns a program (that may not be in the neutral PATH and besides need some
extra env parameters) it can run.

So what I was trying is to find a python module or code that would do
something like ". $HOME/basrc" inside my python code and before executing my
binary program in order to pass to it the particular user's environment.

My program is called with os.spawnvp(os.P_NOWAIT, program, args) and a
simple os.system(". $HOME/basrc") before spawning it doesn't work.

What works is to do os.putenv('PATH', 'blabla'), but then I have to do it
for every key in my bashrc file (not only silly but unmaintainable).

So if someone understood my problem and could give some tip on that, it
would be very much appreciated.

Many thanks in advance.

Alan

-- 
Alan Wilter S. da Silva, D.Sc. - CCPN Research Associate
Department of Biochemistry, University of Cambridge.
80 Tennis Court Road, Cambridge CB2 1GA, UK.
>>http://www.bio.cam.ac.uk/~awd28<<

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Re: date error

[Hervé Edorh]

Hello Mr Alex
i think you have forgotten me
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Group By and aggregation

[Alessandro Ronchi]

I have to get the max value of a model grouped by a field.

The RAW SQL query is this:

SELECT max(energy_tot) FROM fotovoltaico_modules,fotovoltaico_module_scheme
WHERE fotovoltaico_module_scheme.plant_id = 3 AND
fotovoltaico_modules.scheme_id = fotovoltaico_module_scheme.id
GROUP BY fotovoltaico_modules.scheme_id;

I haven't found any way to make the aggregation work with the group by.

This is my model:
http://dpaste.com/118868/


I've tried also:
qs = Modules.objects.filter(scheme__plant=3).order_by("-time")
qs.query.group_by = ["fotovoltaico_modules.scheme_id"]

but it loose the order by and the results are not the same I want.

Thanks in advance!


-- 
Alessandro Ronchi
Skype: aronchi
http://www.alessandroronchi.net

SOASI Soc.Coop. - www.soasi.com
Sviluppo Software e Sistemi Open Source
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autocomplete searching many to many admin with large amount of data

[christian]

I've seen this discussed a few times but have yet to hear/find a
suitable solution:

I have a ManyToManyField in my admin which was doing great with
filter_horizontal until we imported the legacy database and realized
we had more than 5000 rows for said field. Needless to say writing the
select takes awhile. I've looked at raw_admin_id which works only with
a through=Foo (intermediary table).

What i'd like to see is a selectfilter widget which does a client side
autocomplete when typing 3 or more characters . I can probably fix
this with a jquery GET in normal forms but can't see the wood for the
trees in admin. Maybe this is easier/clearer than i thought and
somebody can point me in the right direction? Or better: does anyone
have a solution for this already?

Thanks!

Christian

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Re: Subclass conflict with admin widgets

[phoebebright]

That makes sense.  I'll just create a different admin for each model.

Thanks.

On Feb 10, 4:36 am, Karen Tracey  wrote:
> On Mon, Feb 9, 2009 at 5:18 PM, phoebebright wrote:
>
>
>
>
>
> > Yes I see that, it's just if I don't put the custom form in it works
> > fine:
>
> > class DirectoryAdmin(admin.ModelAdmin):
>
> >    fieldsets = [
> >        (None,   {'fields': ['cat','name','is_live']}),    <
> > CAT FIELD STILL HERE AN OK
> >         ('Contact', {'fields':
> > ['phone','mobile','fax','email','web','address']}),
> >        ('Details', {'fields':
> > ['description','pic1','pic2','pic3','pic4']}),
> >    ]
>
> > admin.site.register(Business,DirectoryAdmin)
>
> I've not looked at the admin code here to determine when it does what,
> exactly, but just looking at the defs I can see what I expect is going on,
> and it makes sense,  For this case, your DirectoryAdmin isn't tied a a
> particular model until the admin.site.register, where you tie it to the
> Business model, which has the cat field, so all in OK.  In your other case,
> you had a custom form with a class Meta specifying model=Directory, which
> does not have a cat field.  So your custom form does not have the field you
> are trying to list in fieldsets.
>
> There is no error in this case here because you don't do anything to tie
> DirectoryAdmin to the Directory model instead of the Business model, whereas
> in the error case you tie DirectoryAdmin to the Directory model, which does
> not have the cat field, so you get an error.
>
> Karen
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signal connection

[Ben Eliott]

Can anyone please suggest why a signal might be failing to connect.  
I'm using 1.0.2 on apache + mod_wsgi. The signal gets picked up fine  
using the localserver, but fails on the server proper.

When i go into the shell and get the signal object and check  
'receivers' i can see the listener registered. But it just doesn't  
seem to want to fire when the event occurs.

The signal is in one app's models.py, when i put a listener in that  
same file it picks it up fine. When i move the listener to a different  
app's models.py this is when it fails.
Something to do with an import conflict? The second app's models.py  
file already imports a class from the signal's models.py file.  Any  
suggestions very welcome, thanks!

Ben




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Re: Forms, fields and widgets

[Malcolm Tredinnick]

On Tue, 2009-02-10 at 09:56 +0200, Sergey Koval wrote:
>  Hello,
> 
>  I read mentioned thread and still can't figure out how I can pass
> arbitrary values to widgets.
> OK, I'll rephrase question (it was "task" in the previous email): how
> I can make widget that takes two values out of the model without
> changing ModelForm behavior or doing separate query in the widget?

Your constraints are a bit arbitrary and, in fact, overly-restrictive.
In particular the "without changing ModelForm" wish is just that: a
hope, not something that falls out of the design as "it looks like this
must be possible." A ModelForm is a form that maps each model field to a
particular form field. That's all. It's not a prototype for arbitrary
model -> form mappings. Rather, it implements one particular sort of
(commonly useful) mapping.

If you're wanting to do extra stuff, it's reasonable to think that you
might have to make some changes to ModelForm. You've certainly moved a
bit beyond that use-case in your example. You're wanting a form based on
a model where each form field have potential access to the model
instance (not each form field corresponding to a single model field), so
you'll have to create a class that knows how to pass in that information
when requested.

I wouldn't be thinking about this from the widget level. Widgets are
just the rendering side. The better question is how to construct a form
class that allows you to specify form fields which can work with this
information. You're asking how to create a particular sort of form field
(Django-form field, not HTML-form field) here. The final rendering, via
Django-form widgets, will almost certainly just use normal (existing)
widgets.

I haven't worked out an answer, in terms of code, to your problem yet,
beyond thinking it didn't seem to hard. I'll try to find some time
tonight to work out some specifics and post tomorrow if nobody else
comes up with a passable solution. But, in the interests of
understanding the issue properly, I would suggest you spend a bit more
time thinking about this yourself, based on the lines I've written
above, rather than hoping somebody might give you the answer outright in
such a short space of time.

>  Probably it is bad mailing list to ask such questions, should I go to
> devel instead?

This is exactly the right mailing list for this type of question.
Anything of the form "how do I ...?" is a django-users question: it's
asking about using Django. The django-dev list is more appropriate for
topics concerning developing Django (core) itself.

Regards,
Malcolm



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Re: Django and jQuery trouble

[Antoni Aloy]

2009/2/10 min :
>
> Hi, everyone.
>
> I have a question for the following example.
>
> Firstly, in the view.py:
>
> def test_1(request, zipcode, pro):
>  if zipcode == 'a' and pro == 'b':
>city = 'c'
>  else:
>city = ''
>
>  return HttpResponse(city)
>
> def test_0(request):
>  return render_to_response('test_0.html', {})
> -
> Then, in the test_0.html
>
> 
> 
> 
> Register form
> 
> 
>  function getZipData() {
>var zipcode = $('#zip').val();
>var pro = $('#pro').val();
>$.get('http://127.0.0.1/ajax/test_1/' + zipcode + '&' + pro +
> '/' , function(data) {
>  $('#city').attr({'value':data});
>});
>  }
> 
> 
> 
> 
> 
> Pro:
> Zip:
> City:
> 
> 
> 
> 
>
> --
> In the urls.py
>
> (r'^ajax/test_0/$', test_0),
> (r'^ajax/test_1/(\S+)/$', test_1),
> ---
> When I input b to the Pro inputbox and a to the Zip inputbox, and
> click the done button, the firebug displays :500 Interserver Error
>
> I think there are some problem with the  $.get('http://127.0.0.1/ajax/
> test_1/' + zipcode + '&' + pro +  '/' , function(data) {$('#city').attr
> ({'value':data}); }); OR
>
> def test_1(request, zipcode, pro):
>  if zipcode == 'a' and pro == 'b':
>city = 'c'
>  else:
>city = ''
>
>  return HttpResponse(city)
>
> Could you please give me some idea?
>
Test your Ajax URL agains the view directly with the browser. It's
seems there is some kind of problem there.
view: def test_1(request, zipcode, pro):
url (r'^ajax/test_1/(\S+)/$', test_1)
At firsth sight they don't match with
http://127.0.0.1/ajax/test_1/' + zipcode + '&' + pro +"/"

Try:
url  = r'^ajax/test_1/(?P\w+)/(?P\w+)/$ ...
and
http://127.0.0.1/ajax/test_1/' + zipcode + '/' + pro +"/"

Hope it helps!

-- 
Antoni Aloy López
Blog: http://trespams.com
Site: http://apsl.net

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