Re: Testing formset validation

[ses1984]

I should also add that neither the formset nor the form report .errors
or .non_form_errors() at all.

On Oct 8, 6:15 pm, ses1984  wrote:
> I have a pretty simple form, defined below, that I am setting
> according to some initial data, and no matter what I try, I can't seem
> to get it to validate in a test.
>
> I have created some test data, which is an array with one dictionary
> element, where the dictionary corresponds to the form. If I create a
> singular from from the dictionary element, it is valid, but if I
> create a formset from the list which contains only that very same
> dictionary, it's not valid.
>
> ###
>
> class FormulaRow(forms.Form):
>     ingredient_number = forms.CharField(label="")
>     amount = forms.DecimalField(label="", max_digits=9,
> decimal_places=5)
>
> ###
>
> >>> initial = [{'amount': '1000.000', 'ingredient_number': '100'}]
> >>> initial_singular= initial[0]
> >>> form = FormulaRow(initial_singular)
> >>> form.is_valid()
> True
> >>> FormulaFormSet = formset_factory(FormulaRow)
> >>> formset = FormulaFormSet(initial=initial)
> >>> formset.is_valid()
>
> False

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question about django url

[newlife]

In my application ,there is a url like this:
"""
xxx.com/xxx/s1-s2-s3-s4-s5/

"""
1: s1 .. s5 ,they are all numbers;
2: s1 must be there
3: the others like "-s2" can be zero to 4

how should I write this url???

any suggestion is welcome.

thanks ~

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noob question about URLconf

[lyrical]

I'm following the Django book but run into a pathing problem (I think)
I did exactly what the book said, even copying and pasting the code as
to make sure I didn't make a typo.

so in the views.py I have

from django.http import HttpResponse

def hello(request):
return HttpResponse("Hello world")

and url I have

from django.conf.urls.defaults import *
from mysite.views import hello

urlpatterns = patterns('',
('^hello/$', hello),
)

I get the error "Unable to connect" what is wrong?


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Re: Project-wide tests

[Roberto Benitez]

One thing you can do is to call your "out of django" app test process from
one of your django app test modules.
Roberto

On Fri, Oct 8, 2010 at 11:00 PM, diogobaeder  wrote:

> Hi there,
>
> I know that the testing facilities from Django read "test" modules
> inside all the installed apps, but is there a way to include a test
> from outside the apps, for example a "test" module located in the
> project root?
>
> I'm trying to do this so that I can build an end-to-end test that
> involves all the applications.
>
> Thanks!
>
> Diogo
>
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Testing formset validation

[ses1984]

I have a pretty simple form, defined below, that I am setting
according to some initial data, and no matter what I try, I can't seem
to get it to validate in a test.

I have created some test data, which is an array with one dictionary
element, where the dictionary corresponds to the form. If I create a
singular from from the dictionary element, it is valid, but if I
create a formset from the list which contains only that very same
dictionary, it's not valid.

###

class FormulaRow(forms.Form):
ingredient_number = forms.CharField(label="")
amount = forms.DecimalField(label="", max_digits=9,
decimal_places=5)

###

>>> initial = [{'amount': '1000.000', 'ingredient_number': '100'}]
>>> initial_singular= initial[0]
>>> form = FormulaRow(initial_singular)
>>> form.is_valid()
True
>>> FormulaFormSet = formset_factory(FormulaRow)
>>> formset = FormulaFormSet(initial=initial)
>>> formset.is_valid()
False

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Re: Iterating tree-like data structures with django

[creecode]

Hello all,

Bruno was kind enough to list some of the techniques for working with
trees.

I'd like to throw out another technique you many want to look into if
you are working with trees of unknown shape and need frequent inserts/
updates.  I've been experimenting with it with some good results so
far, although I don't have any code to share.

Try searching for Vadim Tropashko's Nested Interval/Matrix Encoding
technique.

Toodle-l
creecode

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What's the best practice for Comet w/ Django?

[Shawn Milochik]

I searched the list online and haven't seen any recent discussions about this, 
so I figured I'd check in. Last I heard, Orbited was the way to go, but it 
seems that both it and django-orbited haven't seen any development in quite a 
while. The developer of Orbited is working on something called Hookbox to 
supersede Comet.

Specifically, our application deals with monetary payments, and I'd like the UI 
to update "live" as payments are added to the "pending balance" or moved from 
"pending balance" to "available balance."

So, is anyone using a Comet implementation in production with Django? I'd 
rather use what the majority of the community is using (or moving toward).

Thanks,
Shawn



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Re: mod_wsgi + mod_php = segmentation fault

[Kropotkin]

Hi

I'm having the same problem. I'm using /mod_php5-5.2.9.so

With that loaded my worker processes crash as soon as they are started
and I get the segmentation fault in the logs.

No mod_python.

Did you fix this?

Thanks

Justin



On Oct 3, 3:54 pm, Олег Корсак 
wrote:
> Hello. I'm using apache Apache/2.2.16 (Unix) + mpm_worker on my ~amd64
> Gentoo Linux box. It has mod_php enabled and all my existing php
> projects work fine (with mysql too).
>
> When I'm enabling mod_wsgi in apache config and trying to run simple
> empty django project - I'm getting 500 Internal Server Error and
> "Segmentation fault" in error_log.
>
> When disabling mod_php - it runs just ok.
> Any ideas? I need them both :)
>
> Thanks
>
>  signature.asc
> < 1KViewDownload

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Project-wide tests

[diogobaeder]

Hi there,

I know that the testing facilities from Django read "test" modules
inside all the installed apps, but is there a way to include a test
from outside the apps, for example a "test" module located in the
project root?

I'm trying to do this so that I can build an end-to-end test that
involves all the applications.

Thanks!

Diogo

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Admin Many-to-Many on a regular Form?

[AK]

I really like the 'filter-horizontal' style widget used by Django
Admin for things like specifying permissions for users/groups.  I
would like to create a form that uses this same widget to allow
someone to select a group and then edit which users are in the group
based on this widget.  The catch for me is I need to do it through the
standard part of my site, not the admin interface.

A couple questions arise:
Is there any way to use an ModelAdmin on a regular form?  If not, is
there another way to use that sort of widget?

The tangential question would be, once the solution for the above is
found, how do I populate the form?  Django does not appear to make it
easy to edit the "reverse" side of a Many-to-many relationship.

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Admin Many-to-Many on a regular Form?

[AK]

I really like the 'filter-horizontal' style widget used by Django
Admin for things like specifying permissions for users/groups.  I
would like to create a form that uses this same widget to allow
someone to select a group and then edit which users are in the group
based on this widget.  The catch for me is I need to do it through the
standard part of my site, not the admin interface.

A couple questions arise:
Is there any way to use an ModelAdmin on a regular form?  If not, is
there another way to use that sort of widget?

The tangential question would be, once the solution for the above is
found, how do I populate the form?  Django does not appear to make it
easy to edit the "reverse" side of a Many-to-many relationship.

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Re: possible model relations?

[Marc Aymerich]

On Wed, Oct 6, 2010 at 9:20 PM, alecx
wrote:

> Hello,
> I try to build a kind of call tracker app. The call intaker creates a
> new item (main model) and makes some notes (subject, issue and which
> printer nr, customer, technician,... all with modelfields) all in one
> view. But I am struggling with the model relations and the form
> saving. I cannot save anything to the db, thats because one related
> object isnt already saved to the db.
> I think the problem is the m2m relation between Servicetechnician and
> Customer. Can someone please point me to the right direction?
>
>

in http://docs.djangoproject.com/en/dev/topics/forms/modelforms/ look for
save_m2m()



-- 
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Re: Manually sorting items in a table - Doubly-Linked List vs sort_index

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

ah I see. But I'm a little confused. How are your users manipulating
this list if not via a web page? are you saying you trying to create
an API in your application for people to use on querysets and interact
with the database table?

The notion of lists & tables in the web space is a little ambiguous.

On Oct 8, 7:05 am, Steven Sacks  wrote:
> Sorry I accidentally repeated myself.
>
> List Delete closes gaps by setting item.prev = item.next and item.next
> = item.prev.
>
> On Oct 8, 5:03 am, Steven Sacks  wrote:
>
>
>
> > While I appreciate your response, your assumption is incorrect.
> > However, I've found the solution and it's rather easy.
>
> > The List Delete function closes gaps by setting an item.prev =
> > item.next and item.prev = item.next
> > The List Insert function injects item(s) either at the end of the list
> > (when the first item inserted's prev is the tail, and the tail's next
> > is set to the first item inserted), or in the middle of the list
> > (using similar logic).
> > The List Move function simply calls List Delete to close the gaps, and
> > List Insert with the new position.

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django-facebook

[shacker]

I chose django-facebook to allow site authentication via Facebook
Connect because it seems to be alone amongst the various solutions in
knowing how to smartly connect existing site accounts to FB logins
rather than blindly creating new accounts (if you have users who
sometimes log in the traditional way and other times via FB, they end
up with two accounts in the system).

All went well with implementation until I hit this issue, and it's a
show-stopper:

http://github.com/ryanmark/django-facebookconnect/issues/#issue/3

No response from the developer there, so asking here - has anyone hit
this? How did you overcome? Is there another Facebook Connect app you
prefer? Or a more recent fork of django-facebook that works better?

Thanks,
Scot

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Re: Migrating Groups of Permissions

[ringemup]

I've run afoul of this too, and would love to see a workable solution.

On Oct 7, 1:21 pm, Dan Gentry  wrote:
> As I deploy my application into production, I haven't found a good way
> to migrate the groups of permissions I have defined and tested in
> development.  In fact, due to my poor typing and reviewing, I missed
> one in production and caused a small amount of concern with the users
> until I figured it out.
>
> It seems that I can't just dump and load the data from the test DB,
> since the permissions may not have the same ID.  Any hints from the
> community on how I can automate this to reduce the chance for error?

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Re: Serve static file from cdn

[Sandro Dutra]

Really... As Daniel said, I can't see any problem... only refer your static
into your templates like:
Your javascript URL:
http://commondatastorage.googleapis.com/static/media/node.js
On template:
(...)

(...)

Re: Manually sorting items in a table - Doubly-Linked List vs sort_index

[Steven Sacks]

Sorry I accidentally repeated myself.

List Delete closes gaps by setting item.prev = item.next and item.next
= item.prev.

On Oct 8, 5:03 am, Steven Sacks  wrote:
> While I appreciate your response, your assumption is incorrect.
> However, I've found the solution and it's rather easy.
>
> The List Delete function closes gaps by setting an item.prev =
> item.next and item.prev = item.next
> The List Insert function injects item(s) either at the end of the list
> (when the first item inserted's prev is the tail, and the tail's next
> is set to the first item inserted), or in the middle of the list
> (using similar logic).
> The List Move function simply calls List Delete to close the gaps, and
> List Insert with the new position.

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Re: Manually sorting items in a table - Doubly-Linked List vs sort_index

[Steven Sacks]

While I appreciate your response, your assumption is incorrect.
However, I've found the solution and it's rather easy.

The List Delete function closes gaps by setting an item.prev =
item.next and item.prev = item.next
The List Insert function injects item(s) either at the end of the list
(when the first item inserted's prev is the tail, and the tail's next
is set to the first item inserted), or in the middle of the list
(using similar logic).
The List Move function simply calls List Delete to close the gaps, and
List Insert with the new position.

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Re: Serve static file from cdn

[Daniel Roseman]

On Oct 8, 9:37 am, Hudar  wrote:
> Hi,
>
> Just wondering how we could server static file if we have our files
> hosted in cdn.
>
> I been trying several way, but nothings work.
>
> I have the files in let say ;  
> http://commondatastorage.googleapis.com/static/media/node.js
>
> As far as I know, all the example out there use static files reside in
> the same server. Any help will be much appreciated.

I'm having real trouble understanding what your confusion is. If your
files are on an external URL, then you refer to that URL in your
templates. What's the difficulty?
--
DR.

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Serve static file from cdn

[Hudar]

Hi,

Just wondering how we could server static file if we have our files
hosted in cdn.

I been trying several way, but nothings work.

I have the files in let say ;  
http://commondatastorage.googleapis.com/static/media/node.js

As far as I know, all the example out there use static files reside in
the same server. Any help will be much appreciated.

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ANN: Celery 2.1 stable released

[Ask Solem]

Hey!

Celery 2.1.0 was just uploaded to PyPI!

This is a backward compatible release in the 2.x series,
and is an recommended upgrade for all users.

What is Celery?


Celery is an open source asynchronous task queue/job queue based on
distributed message passing.  It is focused on real-time operation, but
supports scheduling as well.

The execution units, called tasks, are executed concurrently on one or
more worker nodes.  Tasks can execute asynchronously (in the background)
or synchronously (wait until ready).

For more information go to http://celeryproject.org

Highlights


* Periodic task schedule can now be stored in a database,
   and changes will be reflected at runtime (only supported by django-celery
   at the moment, but this can also be used in general)

   http://celeryq.org/docs/userguide/periodic-tasks.html#periodic-tasks

* New web monitor using the Django Admin interface.
   Can also be used by non-Django users.

  http://celeryq.org/docs/userguide/monitoring.html#django-admin-monitor

* Periodic tasks now supports arguments and keyword arguments.

* celeryctl: A new command line utility to inspect and manage worker
   nodes.

   
http://celeryq.org/docs/userguide/monitoring.html#celeryctl-management-utility

* AMQP Backend: Now supports automatic expiration of results.

* Task expiration:  A date and time which after the task will be considered 
expired
   and will not be executed.

* Lots of bugs fixed.
 
* Lots of documentation improvements.

Changes
===

The full list of changes are available in the changelogs:

* celery: http://celeryq.org/docs/changelog.html
* django-celery: http://celeryq.org/docs/django-celery/changelog.html

Download


* celery: http://pypi.python.org/pypi/celery/2.1.0
* django-celery: http://pypi.python.org/pypi/django-celery/2.1.0

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django and legacy database

[tony yu]

I have a legacy database and have user and password with plain-text or md5
encryption
Now, I want an app or function, when the user signup, change or reset the
password, the record of legacy databases will change synchronously.
I would like to keep the existing account app, how can I do?

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Re: Iterating tree-like data structures with django

[bruno desthuilliers]

On 6 oct, 17:27, Paweł Roman  wrote:
> I have a model which has a tree-like structure (not exactly a FK on
> self but we can assume that's the case).
>
> I want to visualise this tree using all records from the db. It seems
> impossible to do with QuerySet, if I have say 100 records (100 nodes
> in the tree) and I try building the tree recursively django will
> execute a SELECT for each node so it will hit the db 100 times to
> build the tree.

(snip)

> Am I missing something? Iterating tree-like data structures seems
> something quite common problem and someone must have done it already
> with django.

Please not that it's in a no way a Django-specific problem, but a
limitation of the relational model (or at least of it's most common
implementation, ie SQL).

The most obvious way to implement a tree in the relational model,
wknown as "Adjacency list", is the use of a self-referential foreign
key pointing on the parent record. It's easy to implement, easy to
maintain, but as you noticed not really efficient when you want to
build the whole tree or a branch of it.

One of the known workaround is the "Modified Preorder Tree
Transversal" (AKA "nested Set") pattern (google for more on this -
there's a django implementation here http://code.google.com/p/django-mptt/),
which is mostly optimized for reading deeply nested trees, but is not
very efficient wrt/ insert/update.  So if your hierarchy is 1/ deeply
nested and 2/ read often, rarely updated, then it might be what your
looking for.

Another known solution is the "Materialized path" pattern, which is
not as good as MPTT for reading and not as bad for inserts/updates.
Here again, google is your friend.

FWIW, there's also a django utility app that provides a generic
implementation of these tree patterns with a same API:
https://tabo.pe/projects/django-treebeard/docs/tip/

HTH

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Re: SUPPORTS_TRANSACTIONS Error while running tests

[girish shabadimath]

Hi Russ,

thanks for the reply,,i resolved this error,,
added
DATABASES['xxx']['SUPPORTS_TRANSACTIONS'] = 'False'
DATABASES['default']['SUPPORTS_TRANSACTIONS'] = 'False'
in settings.py

On Fri, Oct 8, 2010 at 11:49 AM, Russell Keith-Magee <
russ...@keith-magee.com> wrote:

> On Fri, Oct 8, 2010 at 1:34 PM, girish shabadimath
>  wrote:
> > Hi all,
> > i looked into the setup_databases()  code, here it basically checks for
> > MIRROR,,if db is a mirror ,then it simply points to it or else creates
> test
> > db,,,where dis SUPPORTS_TRANSACTIONS check is happening..?
> >
> > trace-out shows its present in testcases.py,,but how setup_database gets
> > there..?,,
> >
> > im a newbie to django,,so don't mind if it sounds simple ...
>
> In django/db/backends/creation.py. It's part of the database backend
> logic that defines how to create the test database.
>
> Yours,
> Russ Magee %-)
>
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Girish M S

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Re: Calling method of a proxy-model in a template

[mettwoch]

Hi Daniel,

Thanks for the hint, I've read through the documentation and I should
be able to handle it despite the fact that I'm more of a "surface"
than an "underground" programmer.

Kindly Yours
Marc

On Sep 30, 5:19 pm, Daniel Roseman  wrote:
> On Sep 30, 3:31 pm, mettwoch  wrote:
>
> > Hi,
>
> > Let's say that I have aproxymodel of the User model that adds some
> > methods. What would be an elegant way to access these methods from
> > within a template in the same easy way I access the User attributes
> > through {{ request.session.user.some_attribute }}.
>
> > Kindly Yours
> > Marc
>
> Well, you don't access the user through request.session.user, but
> simply through request.user. And if you have the auth context
> processor installed, which you do by default, you can simply get it
> via {{ user }}.
>
> So one answer is to define your own context processor to use in place
> of the auth one, which returns an instance of yourproxyclass for the
> user.
>
> Another possibility is to provide a custom request middleware which
> replaces request.user with your version. This might be preferable, as
> you now have access to the extra methods throughout your code, not
> just in templates.
> --
> DR.

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Re: SUPPORTS_TRANSACTIONS Error while running tests

[Russell Keith-Magee]

On Fri, Oct 8, 2010 at 1:34 PM, girish shabadimath
 wrote:
> Hi all,
> i looked into the setup_databases()  code, here it basically checks for
> MIRROR,,if db is a mirror ,then it simply points to it or else creates test
> db,,,where dis SUPPORTS_TRANSACTIONS check is happening..?
>
> trace-out shows its present in testcases.py,,but how setup_database gets
> there..?,,
>
> im a newbie to django,,so don't mind if it sounds simple ...

In django/db/backends/creation.py. It's part of the database backend
logic that defines how to create the test database.

Yours,
Russ Magee %-)

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