Re: Verticity

[jhon.bowl]

On Nov 13, 2:33 pm, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
wrote:
> http://www.verticity.com
>
> On Nov 13, 2:26 pm, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
> wrote:
>
>
>
> > Verticity is currently hiring software enginers and programmers
> > specialy dot net developers in thier regional office Karachi.
> > little about verticity inc:
>
> > VertiCity was founded on the premise that through the medium of the
> > internet geographic barriers could be broken down and a truly global
> > city, where IT services could be provided for clients throughout the
> > world, would be created. Our REMS (Remote Employee Management System)
> > allows our clients to take advantage of a pool of highly talented and
> > cost effective IT professionals. Our services enable IT Application
> > Development process to become efficient and cost effective. Not only
> > have our services reduced our clients IT costs by up to 80%, but by
> > providing them highly qualified professionals, VertiCity has also
> > saved them immeasurable hours of search time and have made offshore
> > outsourcing seamless and without borders.
>
> > Verticity, Inc is a privately held and funded conglomeration of web/
> > software technologies and services -first started in 2001. We are
> > rooted in product and have produced innovations in distinct and
> > growing B2B spaces. Many of our professionals are experts in their
> > fields and by tapping into our resources, clients are able to take
> > advantage of Verticity's outsourcing model which has proved to be
> > highly effective and cost-saving.
>
> > At Verticity, we help clients innovate their businesses to achieve
> > extraordinary results from their customer relationships, business
> > operations, and technology. Verticity's promise to our clients: to do
> > whatever it takes to deliver the right business results, on time and
> > on budget. We have consistently delivered on this promise, achieving
> > success for our clients. Not happy?
>
> > Clients choose Verticity for our commitment to their success, our
> > dedication to delivering our promise, and the straightforward and
> > collaborative way we work with them. Not many companies give their
> > clients complete control over their offshore team. Verticity prides
> > itself on that.- Hide quoted text -
>
> - Show quoted text -+


Well Silver glad to see this news tht verticity inc http://www.verticity.com
has several openings in their company. Verticity inc http://www.verticity.com
is a largest software House in the IT world and peoples recomend
verticity for development. thnx for sharing such nice knowledgement.


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Re: use the same database for different web sites

[Malcolm Tredinnick]

On Tue, 2007-11-13 at 21:48 -0800, [EMAIL PROTECTED]
wrote:
> Dear Django Friends,
> I started the tutorial in the Docs folder. So i had a mysite folder
> and inside that i had a polls subfolder. Everything works fine. Then i
> wanted to try the generic codes in a new folder, also a subfolder of
> mysite, called genpolls. I created the views, urls and models python
> files i.e .py files.
>  Then i get a programmer error that the table genpolls_polls
> doesn't exist. After much checking i find that the database tables are
> named polls_poll and polls_choice because of the path to folder
> "polls" when i first created the database. Thus the path from the
> genpolls folder( where the models, urls, and views files reside) gives
> a table name =  "genpolls_polls" which doesn't match any table in the
> database.
> 
>So how to use the same database for two separate programs or web
> sites.

Since table name are a combination of application name and model name,
by default, normally things will "just work". You appear to have changed
the application name mid-stream, which is why you're seeing something go
a bit awry.

Fortunately, you can have full manual control over the database table
name. See
http://www.djangoproject.com/documentation/model-api/#db-table .

Regards,
Malcolm

-- 
Borrow from a pessimist - they don't expect it back. 
http://www.pointy-stick.com/blog/


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use the same database for different web sites

[markandeya]

Dear Django Friends,
I started the tutorial in the Docs folder. So i had a mysite folder
and inside that i had a polls subfolder. Everything works fine. Then i
wanted to try the generic codes in a new folder, also a subfolder of
mysite, called genpolls. I created the views, urls and models python
files i.e .py files.
 Then i get a programmer error that the table genpolls_polls
doesn't exist. After much checking i find that the database tables are
named polls_poll and polls_choice because of the path to folder
"polls" when i first created the database. Thus the path from the
genpolls folder( where the models, urls, and views files reside) gives
a table name =  "genpolls_polls" which doesn't match any table in the
database.

   So how to use the same database for two separate programs or web
sites.

I could put the models.py file in the "polls" folder, rename it to
modelsg.py and import the Poll and Choice classes from there and it
worked. But one would like to keep separate folders for separate site
files/code.
  Thanks much for your suggestions. Being new to Django there may be,
probably is, a simple solution i haven't found yet. Just starting the
fun, Markandeya


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Re: Hybrid-django server leaving connections open...

[John]

On Nov 13, 5:04 pm, "James Bennett" <[EMAIL PROTECTED]> wrote:
> On 11/13/07, John Penix <[EMAIL PROTECTED]> wrote:
>
> > We've stuck a bit of ORM-using code from our "pure" django server into
> > another server that was only using django templates.  We have been seeing
> > connections left open occasionally.  I browsed the mailing list archives and
> > it sounds like django should be closing the connection.  I'm wondering if we
> > aren't always tripping the code that closes the database connection since
> > this server is not using django to generate responses.
>
> Because it's oriented around web serving, Django closes the connection
> on the "request_finished" signal; if that signal is never fired,
> Django will not close the connection. Additionally, if something else
> requires database access after the signal is fired, a new connection
> will be opened and will not be closed.

Cool.  So I'm guessing that if we send that signal as described here:

http://code.djangoproject.com/wiki/Signals

The connection should get closed.

I'll report back if it doesn't work.

Thanks!

John

>
> --
> "Bureaucrat Conrad, you are technically correct -- the best kind of correct."


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Re: Ordering by related table problem

[Scott SA]

On 11/14/07, Malcolm Tredinnick ([EMAIL PROTECTED]) wrote:

>On Tue, 2007-11-13 at 15:19 -0700, Scott SA wrote:
>> Hi,
>> 
>> Okay, I've been having trouble getting this to work, though it _looks_ easy. 
>My results have proven otherwise (django 0.96, by the way.. I'm modifying an 
>esisting system, not creating a new one so don't have an upgrade option right 
>now).
>> 
>> For simplicity, heres a table overview
>> 
>> Any suggestions would be greatly appreciated,
>
>It's probably bug #2076.

Thanks. 

I was close by trying the select related but I see now I messed up on the 
django table prefix. I needed the app-name prefixing the table i.e. 

recs = Table_1.objects.select_related().order_by('app_table_2.name')

instead of:

recs = Table_1.objects.select_related().order_by('table_2.name')

The first example works as desired, the second hurls errors.

Thanks agian!

Scott

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Re: Accessing legacy DBs with table-less models

[Tomek]

Bugger, the view approach won't work as the SQL query takes
parameters.

On Nov 14, 3:59 pm, Tomek <[EMAIL PROTECTED]> wrote:
> Thanks for that. You just gave me a good idea. I could simply replace
> that crazy SQL code with an equivalent view! This way I don't have to
> write any nasty code to deal with old craziness.
>
> In the last 10 minutes I have looked again at django_restapi code and
> I have discovered an example for dealing with resources which don't
> map 1:1 to Django models. There might be some interesting ideas there
> too.
>
> cheers,
> -tomek
>
> On Nov 14, 3:43 pm, Malcolm Tredinnick <[EMAIL PROTECTED]>
> wrote:
>
> > On Wed, 2007-11-14 at 02:36 +, Tomek wrote:
> > > Wow, what a quick reply! Thanks Malcolm.
>
> > > I'm pretty new to Django so excuse my inability to express myself in
> > > Django terms.
>
> > > I agree with your comments regarding taking the right approach to
> > > solving the problem (how very Pythonic of you :-)
> > > I tried django_restapi because it offered a quick starting point for
> > > some proof of concept prototypes which I am most likely to throw away
> > > anyway.
>
> > > When I say that I want to create a model for a custom SQL query I mean
> > > exactly that. I would like to have a model class which behaves just
> > > like any other model but with some exceptions:
>
> > > - it would be read only
> > > - there is no table corresponding to the model class
> > > - when retrieving records/instances of the model a custom query is
> > > executed instead of whatever query Django would generate
> > > automatically.
>
> > A model represents the Python view of a table or a view at the database
> > level, not the output of a custom SQL query (unless that query is a
> > view).
>
> > If you want customisation beyond that level, you're no longer using
> > Django's ORM, although you might be able to fake it with save() methods
> > on your model and stuff like that. Wouldn't be the first project I ever
> > undertook with Django, though.
>
> > Again, Django's ORM is designed to represent database tables (actually,
> > it's designed to provide persistent storage for Python objects, but it
> > happens to work in reverse, too). It turns out, since database views are
> > like tables, we can handle views. If you want more customisation than
> > that, it rapidly gets more fiddly. Not impossible, but harder.
>
> > So your approach sounds wrong to me. Instead of trying to force things
> > into Django's ORM easily, you'll either need to spend some time
> > understanding the deep internals or write your own objects that look a
> > lot like models but aren't really models.
>
> > Malcolm
>
> > --
> > Borrow from a pessimist - they don't expect it 
> > back.http://www.pointy-stick.com/blog/


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Re: Accessing legacy DBs with table-less models

[Tomek]

Thanks for that. You just gave me a good idea. I could simply replace
that crazy SQL code with an equivalent view! This way I don't have to
write any nasty code to deal with old craziness.

In the last 10 minutes I have looked again at django_restapi code and
I have discovered an example for dealing with resources which don't
map 1:1 to Django models. There might be some interesting ideas there
too.

cheers,
-tomek

On Nov 14, 3:43 pm, Malcolm Tredinnick <[EMAIL PROTECTED]>
wrote:
> On Wed, 2007-11-14 at 02:36 +, Tomek wrote:
> > Wow, what a quick reply! Thanks Malcolm.
>
> > I'm pretty new to Django so excuse my inability to express myself in
> > Django terms.
>
> > I agree with your comments regarding taking the right approach to
> > solving the problem (how very Pythonic of you :-)
> > I tried django_restapi because it offered a quick starting point for
> > some proof of concept prototypes which I am most likely to throw away
> > anyway.
>
> > When I say that I want to create a model for a custom SQL query I mean
> > exactly that. I would like to have a model class which behaves just
> > like any other model but with some exceptions:
>
> > - it would be read only
> > - there is no table corresponding to the model class
> > - when retrieving records/instances of the model a custom query is
> > executed instead of whatever query Django would generate
> > automatically.
>
> A model represents the Python view of a table or a view at the database
> level, not the output of a custom SQL query (unless that query is a
> view).
>
> If you want customisation beyond that level, you're no longer using
> Django's ORM, although you might be able to fake it with save() methods
> on your model and stuff like that. Wouldn't be the first project I ever
> undertook with Django, though.
>
> Again, Django's ORM is designed to represent database tables (actually,
> it's designed to provide persistent storage for Python objects, but it
> happens to work in reverse, too). It turns out, since database views are
> like tables, we can handle views. If you want more customisation than
> that, it rapidly gets more fiddly. Not impossible, but harder.
>
> So your approach sounds wrong to me. Instead of trying to force things
> into Django's ORM easily, you'll either need to spend some time
> understanding the deep internals or write your own objects that look a
> lot like models but aren't really models.
>
> Malcolm
>
> --
> Borrow from a pessimist - they don't expect it 
> back.http://www.pointy-stick.com/blog/


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Re: Accessing legacy DBs with table-less models

[Malcolm Tredinnick]

On Wed, 2007-11-14 at 02:36 +, Tomek wrote:
> Wow, what a quick reply! Thanks Malcolm.
> 
> I'm pretty new to Django so excuse my inability to express myself in
> Django terms.
> 
> I agree with your comments regarding taking the right approach to
> solving the problem (how very Pythonic of you :-)
> I tried django_restapi because it offered a quick starting point for
> some proof of concept prototypes which I am most likely to throw away
> anyway.
> 
> When I say that I want to create a model for a custom SQL query I mean
> exactly that. I would like to have a model class which behaves just
> like any other model but with some exceptions:
> 
> - it would be read only
> - there is no table corresponding to the model class
> - when retrieving records/instances of the model a custom query is
> executed instead of whatever query Django would generate
> automatically.

A model represents the Python view of a table or a view at the database
level, not the output of a custom SQL query (unless that query is a
view).

If you want customisation beyond that level, you're no longer using
Django's ORM, although you might be able to fake it with save() methods
on your model and stuff like that. Wouldn't be the first project I ever
undertook with Django, though.

Again, Django's ORM is designed to represent database tables (actually,
it's designed to provide persistent storage for Python objects, but it
happens to work in reverse, too). It turns out, since database views are
like tables, we can handle views. If you want more customisation than
that, it rapidly gets more fiddly. Not impossible, but harder.

So your approach sounds wrong to me. Instead of trying to force things
into Django's ORM easily, you'll either need to spend some time
understanding the deep internals or write your own objects that look a
lot like models but aren't really models.

Malcolm

-- 
Borrow from a pessimist - they don't expect it back. 
http://www.pointy-stick.com/blog/


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Re: Accessing legacy DBs with table-less models

[Tomek]

Wow, what a quick reply! Thanks Malcolm.

I'm pretty new to Django so excuse my inability to express myself in
Django terms.

I agree with your comments regarding taking the right approach to
solving the problem (how very Pythonic of you :-)
I tried django_restapi because it offered a quick starting point for
some proof of concept prototypes which I am most likely to throw away
anyway.

When I say that I want to create a model for a custom SQL query I mean
exactly that. I would like to have a model class which behaves just
like any other model but with some exceptions:

- it would be read only
- there is no table corresponding to the model class
- when retrieving records/instances of the model a custom query is
executed instead of whatever query Django would generate
automatically.

Now, I don't know if any of that actually makes any sense. If there is
a better way then I'm all ears.

I read up on model managers but as far as I can tell a manager belongs
to a model. I don't actually have a model into which I could put a
custom manager which would manage my custom SQL. The custom SQL
statement is rather long and ugly with multiple joins. I can't clean
it up for now because that would involve cleaning up all the legacy
tables used in the query and I need to avoid that for now.

As for the example, there is not much that I can give you. I have
inherited some old code and I need to replicate its functionality. I
want to create a sort of a web service where a resource can be
accessed using its URI and it's sent back to the client in either XML
or JSON format. To that effect, all I can show you is the legacy SQL
query which I need to execute and somehow represent its result as a
QuerySet. Here it is:

my $sql =<= 0
SQL



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Re: Ordering by related table problem

[Malcolm Tredinnick]

On Tue, 2007-11-13 at 15:19 -0700, Scott SA wrote:
> Hi,
> 
> Okay, I've been having trouble getting this to work, though it _looks_ easy. 
> My results have proven otherwise (django 0.96, by the way.. I'm modifying an 
> esisting system, not creating a new one so don't have an upgrade option right 
> now).
> 
> For simplicity, heres a table overview
> 
> Table_1
> some_field
> other_field
> fk_table_2
> 
> Table_2
> name
> ...
> 
> 
> The selection looks like this:
> 
> recs= Table_1.objects.filter(some_field='xyz')
> 
> then, I want to sort by Table_2.name so in theory, it should be:
> 
> recs= recs.order_by('fk_table_2.name')
> 
> ... or to approximate the online docs example:
> 
> recs= recs.order_by('fk_table_2.name','other_field')
> 
> This results in:
>  ERROR:  missing FROM-clause entry for table
> 
> Any suggestions would be greatly appreciated,

It's probably bug #2076.

Regards,
Malcolm

-- 
If Barbie is so popular, why do you have to buy her friends? 
http://www.pointy-stick.com/blog/


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Accessing legacy DBs with table-less models

[Tomek]

Hi All,

I am using "django_restapi" (http://code.google.com/p/django-rest-
interface/) to quickly gain access in a RESTful way to some tables in
a legacy database. I am only really interested in reading the records
and sending them back in XML or JSON format. I don't need to create,
update or delete any records.

So far "django_restapi" works great for the simple case of accessing
individual models. But as soon as I try to do anything more useful I
get stuck. I have an old Perl script which accesses the same legacy
database and using a custom SQL query returns a bunch of records. I
would like to add a new model to my RESTful Django app which would
perform the equivalent query. I don't want to do it in a view because
then I will have to write all that boiler-plate code that's already in
"django_restapi", such as handling errors, returning correctly
formatted and serialised query sets etc.

I want to write a dynamic model which doesn't correspond to any real
table and plug it straight into "django_restapi". The dynamic nature
of this model would come from the fact that it has to dynamically
compute query sets using custom SQL statements. I don't seem to be
able to find anything relevant to this problem anywhere. Surely it
must be a frequently encountered problem. I would appreciate any help
I can get with this.

cheers,
-tomek


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Re: initial data ignored for Form with __init__

[Joseph Kocherhans]

On 11/13/07, Ken <[EMAIL PROTECTED]> wrote:
>
> I'm using 0.96.  I define the following form
>
> class TForm(forms.Form):
> admin = forms.ChoiceField()
> x = forms.IntegerField()
>
> def __init__(self, data=None, **kwargs):
> super(TForm, self).__init__(data, kwargs)
> admins = [(a.name, a.name) for a in Admin.objects.all()]
> self.fields['admin']._set_choices(admins)

I think you want:

Super(TForm, self).__init__(data, **kwargs)

(Note the ** in front of kwrags)

You're passing a dict as a second positional argument here instead of
expanding that dict to keyword arguments.

Joseph

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initial data ignored for Form with __init__

[Ken]

I'm using 0.96.  I define the following form

class TForm(forms.Form):
admin = forms.ChoiceField()
x = forms.IntegerField()

def __init__(self, data=None, **kwargs):
super(TForm, self).__init__(data, kwargs)
admins = [(a.name, a.name) for a in Admin.objects.all()]
self.fields['admin']._set_choices(admins)


Then, I instantiate it so:

f = TForm(initial={'x': 23})

If I dump out the table with as_table(), the initial x value is not in
the form.  If I comment out the __init__ "constructor", initial is
honored and I see the initial x value as specified.  I define an
__init__ for the purpose of setting choices on the admin ChoiceField.

I can initialize x manually in the __init__ function as follows:

def __init__(self, data=None, **kwargs):
super(TForm, self).__init__(data, kwargs)
admins = [(a.name, a.name) for a in Admin.objects.all()]
self.fields['admin']._set_choices(admins)
if kwargs.has_key('initial'):
vinit = kwargs['initial']
if vinit.has_key('x'): self.fields['x'].initial =
vinit['x']

Can someone explain why initial is ignored when I define my own
__init__?  Is there a prescription for defining your own __init__ when
you sub-class Form and/or Model?  I'm no Python expert and definitely
a newb when it comes to its new-style classes, so please take it easy
on me.  :)


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Re: Adding QuerySets

[Malcolm Tredinnick]

On Tue, 2007-11-13 at 22:23 -0200, Ronaldo Z. Afonso wrote:
> Hi all,
> 
> Is it possible to join two, or more, querySets?
> For example:
> 
> q = q1 + q2
> 
> Being q the union of q1 and q2.

It's spelt "|", so q1|q2 is meant to work. It even does work sometimes,
but not always (another one of those cases of SQL generation that is
easy to break when you put your back into it). It's being fixed, though.

The workaround is just to write the union in Python. Use itertools.chain
if you don't care about the ordering, or write your own merge-sort
iterable if you want to sort the two. Or, if you've only got a few
hundred results, say, just join a couple of Python lists and use list
sorting.

(If you really care, problems will arise if either q1 or q2 could
possibly be empty, and there might be some other cases as well).

Regards,
Malcolm

-- 
Plan to be spontaneous - tomorrow. 
http://www.pointy-stick.com/blog/


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Re: Hybrid-django server leaving connections open...

[James Bennett]

On 11/13/07, John Penix <[EMAIL PROTECTED]> wrote:
> We've stuck a bit of ORM-using code from our "pure" django server into
> another server that was only using django templates.  We have been seeing
> connections left open occasionally.  I browsed the mailing list archives and
> it sounds like django should be closing the connection.  I'm wondering if we
> aren't always tripping the code that closes the database connection since
> this server is not using django to generate responses.

Because it's oriented around web serving, Django closes the connection
on the "request_finished" signal; if that signal is never fired,
Django will not close the connection. Additionally, if something else
requires database access after the signal is fired, a new connection
will be opened and will not be closed.

-- 
"Bureaucrat Conrad, you are technically correct -- the best kind of correct."

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Re: Ordering by foreign key, class Meta

[Malcolm Tredinnick]

On Wed, 2007-11-14 at 00:00 +, Michael wrote:
> Thanks Malcolm, this helped me on one problem I had.  But, I've
> another similar problem but in my case, I've multiple foreign keys, so
> I'm not sure what to do about the database table name part.
> 
> My models:
> class Member(models.Model):
>   # first_name, last_name, etc.
>   class Meta:
> ordering = ['first_name', 'last_name']
> 
> class Team(model.Model):
>   foreman = model.ForeignKey(Member)
>   operator = model.ForeignKey(Member)
>   # and more ForeignKey(Member) fields
>   class Meta:
> ordering = ['foreman',]
> 
> 
> In the admin interface this orders the Teams by the first_name,
> last_name of the foreman, which is what I want.  But in my view, when
> I try to get a list of Teams using:
>  all_teams = Team.objects.all()
> 
> the result isn't sorted by the foreman's [first_name, last_name].  I
> don't know what it's sorted by, it's not id either.

Try inspecting the SQL that Django generates for this statement (if you
don't know how, see the FAQ, but db.connection.queries is the place to
look) to see what's being generated.

You may well be totally screwed here, in which case I'm not going to
worry about it too much, since this feature is effectively broken in
trunk. When it works, that's fine. But it's not robust and is very
unpredictable. That's why I've rewritten it in the branch. So if the SQL
generated is broken, I can't really offer much hope except to say "wait
a little longer" until we get the rewrite finished. I'm targetting end
of the month (Django sprint) for a rough completion date.

Malcolm

-- 
On the other hand, you have different fingers. 
http://www.pointy-stick.com/blog/


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Re: Feeds

[Kenneth Gonsalves]

On 14-Nov-07, at 4:39 AM, Miguel Galves wrote:

> I dont understand your question. What do you mean by
> "if you want a feed, you have to give one"...

if you want a feed, you have to give an absolute url

-- 

regards
kg
http://lawgon.livejournal.com
http://nrcfosshelpline.in/web/



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Re: ImportError: No module named mysql.base

[Josh]

Thanks Karen.  I was a little wary about compiling my own copy of
mysqldb, but it appears as though that's my only option in this
circumstance.  It's amazing how many little things I'm used to Linux
doing for me... doing all that by hand on CentOS wasn't nearly as fun
as I remember it being :)

Thanks again!
Josh

On Nov 13, 5:29 am, "Karen Tracey" <[EMAIL PROTECTED]> wrote:
> That ticket you found suggests the real problem is not a missing mysqldb,
> but a too-old version.  I know nothing of CentOS or yum -- is it possible
> there is a more uplevel package available for you to install?  That would be
> the easiest solution.  If not, you could download/build/install mysqldb
> yourself, as suggested in this thread:
>
> http://groups.google.com/group/django-users/browse_thread/thread/788d...
>
> One other option might be to use Django's mysql_old backend:
>
> http://groups.google.com/group/django-users/browse_thread/thread/98e6...
>
> Karen
>
> On 11/12/07, Josh <[EMAIL PROTECTED]> wrote:
>
>
>
> > Hi everyone!  I'm trying to get one of our servers set up with Django,
> > and everything seems to work fine up until I try to syncdb.
>
> > This is the output I get:
>
> > manage.py syncdb
> > Traceback (most recent call last):
> >   File "manage.py", line 11, in ?
> > execute_manager(settings)
> >   File "/usr/lib/python2.4/site-packages/django/core/management/
> > __init__.py", line 277, in execute_manager
> > utility.execute()
> >   File "/usr/lib/python2.4/site-packages/django/core/management/
> > __init__.py", line 225, in execute
> > self.fetch_command(subcommand).run_from_argv(self.argv)
> >   File "/usr/lib/python2.4/site-packages/django/core/management/
> > base.py", line 70, in run_from_argv
> > self.execute(*args, **options.__dict__)
> >   File "/usr/lib/python2.4/site-packages/django/core/management/
> > base.py", line 83, in execute
> > self.validate()
> >   File "/usr/lib/python2.4/site-packages/django/core/management/
> > base.py", line 110, in validate
> > num_errors = get_validation_errors(s, app)
> >   File "/usr/lib/python2.4/site-packages/django/core/management/
> > validation.py", line 22, in get_validation_errors
> > from django.db import models, connection
> >   File "/usr/lib/python2.4/site-packages/django/db/__init__.py", line
> > 23, in ?
> > backend = __import__('%s.base' % settings.DATABASE_ENGINE, {}, {},
> > [''])
> > ImportError: No module named mysql.base
>
> > I did a search for "No module named mysql.base" and found
> >http://code.djangoproject.com/ticket/5531but I'm not sure what I'm
> > supposed to do with the information found on that page.  The platform
> > is CentOS 5 (I believe), and I am using rev. 6669 of Django.  I
> > installed MySQL-python with yum.  When I run python and import django
> > or import MySQLdb, I get no errors.  I can communicate just fine with
> > the mysql database from the interactive shell.
>
> > Ideas?  Thanks!


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Re: 403 errors handler

[Malcolm Tredinnick]

On Mon, 2007-11-12 at 23:29 -0800, eXt wrote:
> Hi!
> 
>I'd like to know if there is any method to handle 403 errors and
> display pretty error pages for them.
> 
>I need to handle some errors raised by Admin (raised when a user
> clicks an add symbol but doesn't have the permission to add a new
> object).
> 
> In the Admin code I have found add_view function of ModelAdmin which
> does:
> 
> if not self.has_add_permission(request):
> raise PermissionDenied
> 
> Then there is django.core.handlers.base.py and:
> (...)
> except exceptions.PermissionDenied:
> return http.HttpResponseForbidden('Permission denied h1>')
> 
> which causes me to receive ugly untranslated "Permission denied" page.
> Django has a handler for 404 is it possible to write one for 403?

I would write a response middleware that inspects the response for
respnsoe.status == 404 and then goes from there.

The only reason 404 errors are handled slightly specially in Django is
because you can raise an Http404 *exception* and that gets caught by the
request handling loop. No other status codes (except for uncaught
exceptions) are triggered by exceptions. In all these cases, you just
return an HttpResponse class with the right status code set.

Malcolm

-- 
Everything is _not_ based on faith... take my word for it. 
http://www.pointy-stick.com/blog/


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Re: Using Django Template Engine

[Malcolm Tredinnick]

On Mon, 2007-11-12 at 23:04 -0800, Brot wrote:
> Hello,
> 
> I found a code example for "Using Markup" in the django wiki:
> http://code.djangoproject.com/wiki/UsingMarkup
> I need a similar solution, but with the internal django template
> library. Is there any solution for this requirement?
> 
> I would like to store little html/template chunks in a database and
> use them in a "normal" django template. I wouldn't use a markup-
> language. The reason is, that I would like to use the template
> functionality (e.g: url tag).

I don't think you have explained your problem very well. Perhaps a (very
short) example might help you to illustrate what's going wrong.

You can store whatever you like in the database and use the model fields
in a template directly, so I'm not really sure what you are asking that
goes beyond that.


Malcolm

-- 
Always try to be modest and be proud of it! 
http://www.pointy-stick.com/blog/


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Adding QuerySets

[Ronaldo Z. Afonso]

Hi all,

Is it possible to join two, or more, querySets?
For example:

q = q1 + q2

Being q the union of q1 and q2.
Thanks.

Ronaldo.

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Hybrid-django server leaving connections open...

[John Penix]

Hi,

We've stuck a bit of ORM-using code from our "pure" django server into
another server that was only using django templates.  We have been seeing
connections left open occasionally.  I browsed the mailing list archives and
it sounds like django should be closing the connection.  I'm wondering if we
aren't always tripping the code that closes the database connection since
this server is not using django to generate responses.

Has anyone had to insert code to close connections when running a "hybrid"
django setup like this?

Thanks,

John

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Re: Ordering by foreign key, class Meta

[Michael]

Thanks Malcolm, this helped me on one problem I had.  But, I've
another similar problem but in my case, I've multiple foreign keys, so
I'm not sure what to do about the database table name part.

My models:
class Member(models.Model):
  # first_name, last_name, etc.
  class Meta:
ordering = ['first_name', 'last_name']

class Team(model.Model):
  foreman = model.ForeignKey(Member)
  operator = model.ForeignKey(Member)
  # and more ForeignKey(Member) fields
  class Meta:
ordering = ['foreman',]


In the admin interface this orders the Teams by the first_name,
last_name of the foreman, which is what I want.  But in my view, when
I try to get a list of Teams using:
 all_teams = Team.objects.all()

the result isn't sorted by the foreman's [first_name, last_name].  I
don't know what it's sorted by, it's not id either.

I also tried:
 all_teams = Teams.objects.all().order_by('foreman')# returns the
same as above, again not sorted.

[1] all_teams =
Teams.objects.all().order_by('appname_member.first_name')  # returns
error on eval, unknown column 'appname_member.first_name'.

The order_by(tablename.field) worked in another model with only one
reference to the foreign key (so, thanks for that tip, I missed it in
the docs.)  I didn't expect [1] to work, but don't know how to specify
that I want the sorting based on the foreman's first_name, last_name.
Any suggestions?  Is this possible using order_by()?  I can do it by
hand if not, but it'd be cleaner and simpler if I don't have to.

Many thanks.
Michael


On Oct 19, 7:11 am, Malcolm Tredinnick <[EMAIL PROTECTED]>
wrote:

> Orderingby related fields is a bit crufty at the moment and it doesn't
> always work (e.g. ticket #2076). The general idea is that you have to
> use the database table name(!) followed by a dot followed by the target
> model field name (not the column name). This is actually documented 
> athttp://www.djangoproject.com/documentation/db-api/#order-by-fieldsbut
> you have to read it carefully.
>
> The good news is that this will shortly change so that you will be able
> to write person__nameLast in your case, just like you do for filters.
> That code is currently in the queryset-refactor branch and will be
> merged with trunk as soon as a few more slightly tricky problems with
> queries are ironed out.
>
> By way of example and as a sneak preview, [1] and [2] (in the Meta
> class) show the new syntax (that's a new test file on that branch).
>
> [1]http://code.djangoproject.com/browser/django/branches/queryset-refact...
>
> [2]http://code.djangoproject.com/browser/django/branches/queryset-refact...
>
> Regards,
> Malcolm
>
> --
> Remember that you are unique. Just like everyone 
> else.http://www.pointy-stick.com/blog/


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Re: KeyError, Submit Empty Field and Form Validation

[Gloria W]

This was an excellent response, and helped me immediately. Thank you.
~G~


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Re: Feeds

[Miguel Galves]

Kenneth,

I dont understand your question. What do you mean by
"if you want a feed, you have to give one"...

I'm trying to create one  :-)

On Nov 12, 2007 10:08 AM, Kenneth Gonsalves <[EMAIL PROTECTED]> wrote:

>
>
> On 12-Nov-07, at 5:32 PM, Miguel Galves wrote:
>
> > I'm giving a feed to index.html.
> >
> > Do I really need to have an absolute URL in my model? It seems to
> > me that
> > this need makes the app less portable.
>
> if you want a feed you have to give one - could you paste the your
> view for index.html?
>
> --
>
> regards
> kg
> http://lawgon.livejournal.com
> http://nrcfosshelpline.in/web/
>
>
>
> >
>


-- 
Miguel Galves - Engenheiro de Computação
Já leu meus blogs hoje?
Para geeks http://log4dev.com
Pra pessoas normais
http://miguelcomenta.wordpress.com

"Não sabendo que era impossível, ele foi lá e fez..."

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German django forum

[Jan Meier]

Hi,

there is a new Forum for django help/support in german, if you speak german 
check it out:

http://www.django-resource.de/

See you there,

Jan

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Re: learning django and python

[lispingng]

sebey:
a python overview you can go through in an hour or 2 is byteofpython.
it's very short, and though u wont get everythng in it, it gives you a
feel for what python is about.
i lso find reading the django code can be very informative (after u
have got some python under your belt)

you can get the byteofpython from the playwithpython yahoo group

On Nov 13, 10:29 pm, Raisins <[EMAIL PROTECTED]> wrote:
> I love Instantd Django. I made installing and depolying django and
> python a breeze also I can move from my work to home every easy just
> by carrying around my thumbdrive. I highly suggest it to anyone on the
> fence about either Python or django. I haven't found an easier cleaner
> way to deploy them anywhere.
>
> On Nov 13, 2:37 pm, cjl <[EMAIL PROTECTED]> wrote:
>
> > Sebey:
>
> > You may want to check out a tutorial I am working on:
>
> >http://www.instantdjango.com
>
> > It provides a 'newbie-friendly' introduction to Django, even if you're
> > not familiar with Python yet.
>
> > I haven't finished the second chapter yet, but I think the first
> > chapter will help get you started, or at least help you figure out if
> > Python and Django is right for you.
>
> > -CJL


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Re: Django profiler to find a project weak spots

[lispingng]

hey,
i have been rather interested in the profiling of my django apps (i'm
a not-very-newbie)
will look at it and provide useful (i sincerely hope) feedback

On Nov 12, 6:23 pm, Dima Dogadaylo <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I wrote a Django pofiler that can be used to find weak performance
> spots in Django projects, i.e.  to find how many SQL-queries are used
> per page, how heavy html-pages are, etc.
>
> The source code of the script and examples of usage are available
> here:http://www.mysoftparade.com/blog/django-profile-sql-performance/
>
> I wrote it because realised that sometimes it's easy to eventually
> miss select_related() for an QuerySet and end with dozens of SQL
> queries per page.
>
> --http://www.mysoftparade.com/


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Ordering by related table problem

[Scott SA]

Hi,

Okay, I've been having trouble getting this to work, though it _looks_ easy. My 
results have proven otherwise (django 0.96, by the way.. I'm modifying an 
esisting system, not creating a new one so don't have an upgrade option right 
now).

For simplicity, heres a table overview

Table_1
some_field
other_field
fk_table_2

Table_2
name
...


The selection looks like this:

recs= Table_1.objects.filter(some_field='xyz')

then, I want to sort by Table_2.name so in theory, it should be:

recs= recs.order_by('fk_table_2.name')

... or to approximate the online docs example:

recs= recs.order_by('fk_table_2.name','other_field')

This results in:
 ERROR:  missing FROM-clause entry for table

Any suggestions would be greatly appreciated,

Thanks,

Scott

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Re: [i18n] Questions on how it works...

[Nicolas Steinmetz]

Nicolas Steinmetz a écrit :

> Any idea about this ?


my fault, I forgot the locale middleware and I set a "conf/locale" 
structure within my app whereas it should be just "locale".

This way, I do not need blocktrans any longer.

So it's solved...


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Re: Announcing Django Evolution!

[Nicolás Miyasato]

On Nov 13, 4:08 am, "Russell Keith-Magee" <[EMAIL PROTECTED]>
wrote:
> Announcing Django Evolution!
> 
>
> http://code.google.com/p/django-evolution/

Good job!

I hope the best for the project.

--
Nicolás Miyasato


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Re: learning django and python

[Raisins]

I love Instantd Django. I made installing and depolying django and
python a breeze also I can move from my work to home every easy just
by carrying around my thumbdrive. I highly suggest it to anyone on the
fence about either Python or django. I haven't found an easier cleaner
way to deploy them anywhere.

On Nov 13, 2:37 pm, cjl <[EMAIL PROTECTED]> wrote:
> Sebey:
>
> You may want to check out a tutorial I am working on:
>
> http://www.instantdjango.com
>
> It provides a 'newbie-friendly' introduction to Django, even if you're
> not familiar with Python yet.
>
> I haven't finished the second chapter yet, but I think the first
> chapter will help get you started, or at least help you figure out if
> Python and Django is right for you.
>
> -CJL


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Exposing Django to a Java Client

[OliverMarchand]

Dear Django Users,

Some while ago in May Brian Corrigan mentioned the following solution
to exposing Django to an outside application to me.

On May 24, 12:32 pm, brian corrigan <[EMAIL PROTECTED]> wrote:
> We have used Django along side Java applications by using Jython and
> HTTP requests from the Java to Django and vice versa. So if your
> colleagues need more "serious" application features there are ways to
> plug them into Django (although I'm sure some people might not agree
> with the method) :)

Brian, could you describe in a few words how that works?

I imagine the following: You pack every request int a url and post
parameters. That's easy, as long as it is well documented. Now the
result of such an operation may be of any content type. As long as you
you can control the format of the response, you can easily create some
protocol that your application understands. Now unfortunately that is
not true for the whole admin branch of the urls. That's sort of sad,
because you would have to rewrite a lot of those CRUD operations in
some way. I imagine that maybe some sort of middleware could take care
of catching the reponse and converting it into the corresponding
protocol?

as always: thanks for your answers,
   Oliver


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Re: Missing Documentation cross-reference to shortcuts ?

[James Bennett]

On 11/13/07, jfine <[EMAIL PROTECTED]> wrote:
> I've added this problem to that ticket.

Please don't do that: we generally operate on a principle of one
ticket per issue, and one issue per ticket. Piling a bunch of
different things into one ticket just makes it impossible to sort them
out and deal with.


-- 
"Bureaucrat Conrad, you are technically correct -- the best kind of correct."

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Re: Simple save() override not working

[Mike Feldmeier]

I should clarify: it's not failing, it just doesn't seem to be calling
the custom save method...


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Simple save() override not working

[Mike Feldmeier]

I know, I've seen a million posts about this, but they all seem to relate to
m2m fields.  While I do have an m2m field in the table (blog entry <->
tags), it's one of the simple fields I'm having trouble with.

def save(self):
> import datetime
> if not self.publish_date and self.state == 2:
> self.publish_date = datetime.date.today()
> return super(BlogEntry, self).save()
>

This override works when in the shell, but not through the admin interface.
I am just not understanding why it would fail on this simple field.

Thanks,
Mike

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Re: Missing Documentation cross-reference to shortcuts ?

[jfine]

glopglop wrote:
> A lookup on google shows that the page 
> http://www.djangoproject.com/documentation/shortcuts/
> isn't linked from anywhere on the documentation (and the site), and I
> had to search it to find it.
>
> (see
> http://www.google.com/search?hl=fr=1=link%3Ahttp%3A%2F%2Fwww.djangoproject.com%2Fdocumentation%2Fshortcuts%2F=Rechercher=)
> )
>
>
> I don't know where it belongs to, but at least we could make it
> available from the tutorial (where it's used first ?)
>
> I dont know how to check for orphans, but this may not be the only
> page : maybe it could be automated as a test ?

I had a similar problem with static_files - see 
http://code.djangoproject.com/ticket/5916

I've added this problem to that ticket.

--
Jonathan


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Re: learning django and python

[cjl]

Sebey:

You may want to check out a tutorial I am working on:

http://www.instantdjango.com

It provides a 'newbie-friendly' introduction to Django, even if you're
not familiar with Python yet.

I haven't finished the second chapter yet, but I think the first
chapter will help get you started, or at least help you figure out if
Python and Django is right for you.

-CJL


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Re: Announcing Django Evolution!

[SmileyChris]

On Nov 13, 8:08 pm, "Russell Keith-Magee" <[EMAIL PROTECTED]>
wrote:
> Announcing Django Evolution!
> 
>
> http://code.google.com/p/django-evolution/

Good job, Russ and Ben!

The project gets the smiley seal of approval :)


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Missing Documentation cross-reference to shortcuts ?

[glopglop]

A lookup on google shows that the page 
http://www.djangoproject.com/documentation/shortcuts/
isn't linked from anywhere on the documentation (and the site), and I
had to search it to find it.

(see
http://www.google.com/search?hl=fr=1=link%3Ahttp%3A%2F%2Fwww.djangoproject.com%2Fdocumentation%2Fshortcuts%2F=Rechercher=)
)


I don't know where it belongs to, but at least we could make it
available from the tutorial (where it's used first ?)

I dont know how to check for orphans, but this may not be the only
page : maybe it could be automated as a test ?


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Re: Dynamic ImageField

[Peter]

No worries, I'm just trying to make sense of all the options. : )

Nonetheless, is there any documentation on what I can get out of each
field in the save_file method, or examples of how I can access the
filename and directory where the file is being saved within this
method?

Marcin's first example works great for me when I check/create the
directory structure before the save and perform resizing after the
save, but I'm having trouble putting these actions into the overridden
method (that whole DRY thing...).  Also, I tried using ideas from the
AutoImageField in Marcin's second example, but my image resizing
seemed to be getting the wrong file_path and failing silently.

For some examples, I wrote a get_upload_to method for dynamic
uploading as such:

  def get_upload_to(self, field_attname):
return 'img/user/%d/%s' % (random.randint(10, 99),
self.id)

and I tried getting the filename within the save_file method as such:

  file_name = os.path.join(settings.MEDIA_ROOT, getattr(new_object,
self.attname))

Thanks for any help!



On Nov 13, 11:30 am, "Marty Alchin" <[EMAIL PROTECTED]> wrote:
> On Nov 13, 2007 11:03 AM, Peter <[EMAIL PROTECTED]> wrote:
>
> > Also, is there a big reason to override this vs the _save_FIELD_file
> > method as shown in this example:
> >http://gulopine.gamemusic.org/2007/11/customizing-filenames-without-p...
>
> I'll admit, that post was thrown together in a hurry, in response to
> several questions that I kept answering with "it'll be better when my
> filestorage work makes it into trunk". I felt it was better to have
> something out there in the meantime, and I didn't research what
> solutions others had come up with.
>
> In my opinion, the FileField (or ImageField) subclass approach linked
> by Marcin is much simpler and cleaner than my own, and requires much
> less ugly hackery.
>
> That said, this should all get better when my filestorage work makes
> it into trunk. ;)
>
> -Gul


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Re: Dynamic ImageField

[Marty Alchin]

On Nov 13, 2007 11:03 AM, Peter <[EMAIL PROTECTED]> wrote:
> Also, is there a big reason to override this vs the _save_FIELD_file
> method as shown in this example:
> http://gulopine.gamemusic.org/2007/11/customizing-filenames-without-patching.html

I'll admit, that post was thrown together in a hurry, in response to
several questions that I kept answering with "it'll be better when my
filestorage work makes it into trunk". I felt it was better to have
something out there in the meantime, and I didn't research what
solutions others had come up with.

In my opinion, the FileField (or ImageField) subclass approach linked
by Marcin is much simpler and cleaner than my own, and requires much
less ugly hackery.

That said, this should all get better when my filestorage work makes
it into trunk. ;)

-Gul

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Re: XMLField validation within a model

[James Bennett]

On 11/12/07, jim <[EMAIL PROTECTED]> wrote:
> 2. Do I need to call the validation explicitly?

Validation will be done automatically by forms generated from this
model (e.g., the admin). It will not be done automatically by a raw
save() of an object (since save() assumes you've validated the data in
advance) or by forms you write yourself, unless you explicitly add the
correct validation.

-- 
"Bureaucrat Conrad, you are technically correct -- the best kind of correct."

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Re: XMLField validation within a model

[jim]

OK.. i got the first part.. NULL and '' are different from the db
perspective:

sqlite> CREATE TABLE t2( a TEXT NOT NULL);
sqlite> insert into t2 values('');
sqlite> select * from t2;

sqlite> insert into t2 values('ttt');
sqlite> select * from t2;

ttt
sqlite> insert into t2 values(NULL);
SQL error: t2.a may not be NULL


jim



On Nov 12, 6:00 pm, jim <[EMAIL PROTECTED]> wrote:
> How does one validate the xml being inserted into a table? I have the
> following model:
>
> class FlightReservation(models.Model):
> """
> """
> departing_itin = models.XMLField(ITIN_RELAXNG_SCHEMA_PATH)
> returning_itin = models.XMLField(ITIN_RELAXNG_SCHEMA_PATH)
>...
>
> I have the JING_PATH set in my settings.py
>
> However, when I inserted a row, :
>
> 1. It does not complain even if the above two fields are blank. (I was
> expecting it to complain)
> 2. Do I need to call the validation explicitly?
>
> thanks
> Jim


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Re: Dynamic ImageField

[Peter]

Thanks for posting the example links.

Is there any documentation on "save_file" and what each field actually
is for this method?  I was using some random numbers in the folder
creation and wanted to make sure the folders exist before I save the
file.

Also, is there a big reason to override this vs the _save_FIELD_file
method as shown in this example:
http://gulopine.gamemusic.org/2007/11/customizing-filenames-without-patching.html

Regards,
Peter

On Nov 8, 11:26 pm, cschand <[EMAIL PROTECTED]> wrote:
> Hi Marcin
>It's working... Thankyou very much :)
>
> cschand
>
> On Nov 8, 6:46 pm, Marcin Mierzejewski <[EMAIL PROTECTED]>
> wrote:
>
> > Hi,
>
> > Yes, you 
> > can:http://scottbarnham.com/blog/2007/07/31/uploading-images-to-a-dynamic...
>
> > Regards,
> > Marcin
>
> > On Nov 8, 2:08 pm, cschand <[EMAIL PROTECTED]> wrote:
>
> > > Hi all,
> > >   Can we make dynamic ImageFields?uploadfile to /media/avatar/
> > > username or userid/- Hide quoted text -
>
> > - Show quoted text -


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Re: learning django and python

[Tim Chase]

> well I have a book on php,apache and mysql so are there? any 
> differences between mysql and postgreSQL for django
> (proforanmce features etc.)

They're becoming closer in terms of their features.  A couple 
observations in my experience:


- MySQL tends to be faster and have some nice "my site mostly 
reads data and doesn't have so much writing" optimizations 
(mostly through table-types)

- the prevaling intarweb "knowledge" says that MySQL is faster 
under light load, but doesn't scale as well as PostgreSQL (PG) 
under heavy transactional load (again, load for reading vs. load 
for writing may be important here).

- PG supports much more ANSI SQL.  MySQL is coming closer, but 
it's still missing some things that I reach for regularly.  And 
some of MySQL's table-types don't support all features (such as 
transactions) though this allows for some of the optimizations 
mentioned above.  Many hosting services have older versions of 
MySQL which drive me absolutely bonkers for its lack of certain 
features (views, sub-queries, etc)

- I find MySQL easier to install and administer.  PG has a much 
more "enterprisy" feel to it with the management overhead that 
goes along with it.  This may be the reason more hosting services 
tend to offer MySQL.

- MySQL has full-text search (FTS).  The most recent release of 
PG now has finally integrated their plugin FTS into the default 
deployment which should close this gap.

- MySQL used to have the edge for Win32 deployment, but PG now 
works on NT-based Win32 (Win2k and WinXP...likely Vista too)

- both have their own replication/load-balancing schemes that can 
be used

Fortunately, since they're both free, you can download both and 
take 'em for a test drive to see which you prefer.

Django's ORM also abstracts out many of the differences between 
them, so it's not as significant unless you're reaching into an 
extra() call to use some server-specific code.  Where it matters, 
I try to test with Django's "big 3"...PG, MySQL, and sqlite just 
to make sure it works on all three, but for my quick/development 
tests, I tend to prefer sqlite for its in-memory DB.

Just my thoughts on factors.  Weigh against what you need and 
decide accordingly.

-tim




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Re: learning django and python

[sebey]

well I have a book on php,apache and mysql so are there? any
differences between mysql and postgreSQL for django (proforanmce
features etc.)
On Nov 13, 1:36 pm, Kenneth Gonsalves <[EMAIL PROTECTED]> wrote:
> On 13-Nov-07, at 6:55 PM, sebey wrote:
>
> > has anyone tryed this I guess you have ken but is a good and quick way
> > to learn django and python and sql (mysql is it or again silly?) this
> > is really intersting I loved to learn more
>
> for me - while learning django, I always had Python in a Nutshell,  
> and the wrox book on postgresql open on my desk for reference and  
> practice. I now have diveintopython and the interactive postgresql  
> manual open on my laptop while I do django on my desktop. Am learning  
> all the time. (that is when I have time to code, which is not very  
> often). Incidently, if you want to learn sql, postgresql makes far  
> more sense than mysql.
>
> --
>
> regards
> kghttp://lawgon.livejournal.comhttp://nrcfosshelpline.in/web/


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Re: How put admin in deployment

[Dima Dogadaylo]

On Tue, 2007-11-13 at 14:56 +, mamcxyz wrote:
> In test mode, I can acces the "admin" site, but when I deploy the site
> I can't do it.
> 
> Before, I setup another fastcgi process to it, but I think that is
> overkill (I must run this under a VPS). Any trick to put admin under
> the regular fastcgi process?

I run my blog under fastcgi on dreamhost with admin without any special
tricks. Why  can't you access /admin/? What is the error?

-- 
http://www.mysoftparade.com/


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How put admin in deployment

[mamcxyz]

In test mode, I can acces the "admin" site, but when I deploy the site
I can't do it.

Before, I setup another fastcgi process to it, but I think that is
overkill (I must run this under a VPS). Any trick to put admin under
the regular fastcgi process?


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Re: Circular dependencies problem

[[EMAIL PROTECTED]]

Ok,

I will do like this.

Thanks


On Nov 13, 12:03 pm, Thomas Guettler <[EMAIL PROTECTED]> wrote:
> Am Dienstag, 13. November 2007 12:00 schrieb [EMAIL PROTECTED]:
>
> > But then this N:M field would only be used some times... it doesn't
> > seam as a good way to do this.
>
> > I could always create a big app with all the models but I would like
> > to be able have apps for each main class so my views.py is cleanly
> > separated.
>
> 'manage.py startapp' creates 'views.py'. But for every application
> that has more then 200 lines of code, I would use create a directory
> called 'views' and but views there. Example
>
> views/__init__.py  (Empty. File is needed)
>   user.py
>   mm.py
>   discussions.py
>
>  HTH,
>   Thomas


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Re: How much memory does a django instance need was Does Hostmonster support Django?

[Kenneth Gonsalves]

On 13-Nov-07, at 7:10 PM, Forest Bond wrote:

> I guess maybe you could try to reduce your imports.

heavy use of PIL and reportlab is there even though there are at the  
most three users at a time. I remember running 4 sites on pre .91  
django on zettai and keeping well within the 64 mb limit. Sigh.

-- 

regards
kg
http://lawgon.livejournal.com
http://nrcfosshelpline.in/web/



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No need for FileField

[Thomas Guettler]

Hi,

I have model Object and I want to store 0..N files
for each. To keep the files together the files should
be saved under a directory like this: .../objects/ID/

FileField does not support this. Now I found a simple
solution, that I want to share. 

The solution is simple: I don't need FileField. 
It is redundant to store the file names in the database.
An other point: there is a break in the transaction flow 
(filesystem can't rollback like a database).

I just upload to .../objects/ID/ and there is a method
of the model Object which returns the list of all uploaded files. This
just calls os.listdir().

Here is the code, which uses urlquote() to convert the unicode filenames.

# Python
import os
import urllib

# Django
from django.conf import settings
from django.utils.http import urlquote

class Attachment(object):
def __init__(self, obj, filename=None, fs_name=None):
self.obj=obj
if filename:
assert not fs_name
self.filename=filename
else:
assert not filename
self.filename=urllib.unquote(fs_name)
assert self.filename.find("/")==-1, self.filename

def __cmp__(self, other):
assert isinstance(other, Attachment), other
return cmp(self.fs_name, other.fs_name)

def __repr__(self):
return '<%s.%s %s>' % (self.__class__.__module__, 
self.__class__.__name__, self.fs_name)

def get_directory(self):
return os.path.join(settings.ATTACHMENT_UPLOAD_TO, str(self.obj.id))
directory=property(get_directory)

def get_fs_name(self):
fs_name=urlquote(self.filename)
return os.path.join(self.directory, fs_name)
fs_name=property(get_fs_name)

def get_absolute_url(self):
return urlquote("%sobject/%d/attachment/%s" % (
settings.SCRIPTNAME, self.obj.id, self.filename))

def delete(self):
os.unlink(self.fs_name)


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Re: How much memory does a django instance need was Does Hostmonster support Django?

[Forest Bond]

Hi,

On Tue, Nov 13, 2007 at 07:41:17AM +0530, Kenneth Gonsalves wrote:
> On 12-Nov-07, at 6:25 PM, Forest Bond wrote:
> > Maybe you need to decrease your ServerLimit?  Each forked server  process
> > leads to increased memory usage.  For a really low volume site, you can  get
> > away with ServerLimit 1, although I'd be sure to host your media files in a
> > different instance (webfaction has docs for doing this somewhere).
> 
> did that
>
> > Make sure that Django and Python debug settings are disabled, too
> > (apache2.conf PythonDebug, settings.py DEBUG).
> 
> did all this - I am still getting around 35 MB per instance. And it  
> is not the fault of webfaction. The same site on my local machine  
> gives the same figure. This on the latest svn in both cases. The last  
> time I looked at these figures, it was around 12-15mb an instance.  
> Any other clues?

This is probably normal memory usage.  This is not a problem, as long as it
doesn't grow much beyond that, right?

I have two small sites that share a lot of code running on a webfaction account.
With ServerLimit 1 and media hosted on the main apache instance (which doesn't
count against me for RAM usage), I stay pretty constant at 32-35MB.  I don't
think it would be possible to get much lower than that.  Libraries have to get
loaded somewhere, afterall.

I guess maybe you could try to reduce your imports.

-Forest
-- 
Forest Bond
http://www.alittletooquiet.net


signature.asc
Description: Digital signature

Re: learning django and python

[Kenneth Gonsalves]

On 13-Nov-07, at 6:55 PM, sebey wrote:

> has anyone tryed this I guess you have ken but is a good and quick way
> to learn django and python and sql (mysql is it or again silly?) this
> is really intersting I loved to learn more

for me - while learning django, I always had Python in a Nutshell,  
and the wrox book on postgresql open on my desk for reference and  
practice. I now have diveintopython and the interactive postgresql  
manual open on my laptop while I do django on my desktop. Am learning  
all the time. (that is when I have time to code, which is not very  
often). Incidently, if you want to learn sql, postgresql makes far  
more sense than mysql.

-- 

regards
kg
http://lawgon.livejournal.com
http://nrcfosshelpline.in/web/



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binding data with imageupload in newforms

[Kenneth Gonsalves]

hi,

I have a form to edit some data which is spread over two models. In  
this case, I have to retrieve the existing data from the models, bind  
that to the form and open the form. One of the fields happens to be  
an image field. The newforms documentations says this:

file_data = {'mugshot': {'filename':'face.jpg'
...  'content': }}

what is this  that has to be put into the 'content'? If I  
leave it blank, I get a validation error as no file uploaded. I tried  
get_foo_url(), but that doesnt work either.

-- 

regards
kg
http://lawgon.livejournal.com
http://nrcfosshelpline.in/web/



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Re: Django authentification application with openid using django auth contrib

[Benoit Chesneau]

Version 0.2 :
- include new patch for django_openid 2.0
- clean code. New username_control decorator
- fix yadis import
- urls localization

You could downlad it here :
http://django-authopenid.googlecode.com/files/django_authopenid-0.2.tar.gz

Documentation :
http://code.google.com/p/django-authopenid/wiki/README

enjoy,

- benoît


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Time zone problem

[Robert]

Hi,

In my settings.py I have TIME_ZONE set to 'Europe/Warsaw'.

When printing the settings.TIME_ZONE and os.environ['TZ'] in my
views.py
I am getting strange results.

TIME_ZONE always returns 'Europe/Warsaw', but os.environ['TZ']
returns
one of 'Europe/Warsaw' and 'America/Chicago'.

It's not regular, and does not depend on how many times I refresh the
page.

There are many DateTime fields in my models which makes the TZ problem
very confusing.

Using Apache 2.0.59 & mod_python 3.1.4 (python 2.4.2) on FreeBSD 6.2
RELEASE-p2

Thanks,

--
Robert


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Re: learning django and python

[Kenneth Gonsalves]

On 13-Nov-07, at 6:04 PM, sebey wrote:

> is that a joke or for real? sorry don't get it

for real - you cant learn python or sql through django - so make a  
systematic plan of learning the two *while* you are learning django.  
Meaning that, dont first go and learn python and *then* learn django

-- 

regards
kg
http://lawgon.livejournal.com
http://nrcfosshelpline.in/web/



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Re: learning django and python

[sebey]

is that a joke or for real? sorry don't get it

On Nov 13, 1:47 am, Kenneth Gonsalves <[EMAIL PROTECTED]> wrote:
> On 12-Nov-07, at 9:02 PM, sebey wrote:
>
> > good thanks for can I learn python with django
>
> while learningdjango():
> python.learn()
> sql.learn()
>
> --
>
> regards
> kghttp://lawgon.livejournal.comhttp://nrcfosshelpline.in/web/


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Re: learning django and python

[sebey]

is that a joke or for real? sorry don't get it

On Nov 13, 1:47 am, Kenneth Gonsalves <[EMAIL PROTECTED]> wrote:
> On 12-Nov-07, at 9:02 PM, sebey wrote:
>
> > good thanks for can I learn python with django
>
> while learningdjango():
> python.learn()
> sql.learn()
>
> --
>
> regards
> kghttp://lawgon.livejournal.comhttp://nrcfosshelpline.in/web/


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Re: ImportError: No module named mysql.base

[Karen Tracey]

That ticket you found suggests the real problem is not a missing mysqldb,
but a too-old version.  I know nothing of CentOS or yum -- is it possible
there is a more uplevel package available for you to install?  That would be
the easiest solution.  If not, you could download/build/install mysqldb
yourself, as suggested in this thread:

http://groups.google.com/group/django-users/browse_thread/thread/788d7b4683388ebf/5a3a11b2540768ae

One other option might be to use Django's mysql_old backend:

http://groups.google.com/group/django-users/browse_thread/thread/98e68571ef8ea3a2/8bd50c74f9f31091

Karen


On 11/12/07, Josh <[EMAIL PROTECTED]> wrote:
>
>
> Hi everyone!  I'm trying to get one of our servers set up with Django,
> and everything seems to work fine up until I try to syncdb.
>
> This is the output I get:
>
> manage.py syncdb
> Traceback (most recent call last):
>   File "manage.py", line 11, in ?
> execute_manager(settings)
>   File "/usr/lib/python2.4/site-packages/django/core/management/
> __init__.py", line 277, in execute_manager
> utility.execute()
>   File "/usr/lib/python2.4/site-packages/django/core/management/
> __init__.py", line 225, in execute
> self.fetch_command(subcommand).run_from_argv(self.argv)
>   File "/usr/lib/python2.4/site-packages/django/core/management/
> base.py", line 70, in run_from_argv
> self.execute(*args, **options.__dict__)
>   File "/usr/lib/python2.4/site-packages/django/core/management/
> base.py", line 83, in execute
> self.validate()
>   File "/usr/lib/python2.4/site-packages/django/core/management/
> base.py", line 110, in validate
> num_errors = get_validation_errors(s, app)
>   File "/usr/lib/python2.4/site-packages/django/core/management/
> validation.py", line 22, in get_validation_errors
> from django.db import models, connection
>   File "/usr/lib/python2.4/site-packages/django/db/__init__.py", line
> 23, in ?
> backend = __import__('%s.base' % settings.DATABASE_ENGINE, {}, {},
> [''])
> ImportError: No module named mysql.base
>
> I did a search for "No module named mysql.base" and found
> http://code.djangoproject.com/ticket/5531 but I'm not sure what I'm
> supposed to do with the information found on that page.  The platform
> is CentOS 5 (I believe), and I am using rev. 6669 of Django.  I
> installed MySQL-python with yum.  When I run python and import django
> or import MySQLdb, I get no errors.  I can communicate just fine with
> the mysql database from the interactive shell.
>
> Ideas?  Thanks!
>
>
> >
>

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Re: Circular dependencies problem

[Thomas Guettler]

Am Dienstag, 13. November 2007 12:00 schrieb [EMAIL PROTECTED]:
> But then this N:M field would only be used some times... it doesn't
> seam as a good way to do this.
>
> I could always create a big app with all the models but I would like
> to be able have apps for each main class so my views.py is cleanly
> separated.

'manage.py startapp' creates 'views.py'. But for every application
that has more then 200 lines of code, I would use create a directory
called 'views' and but views there. Example

views/__init__.py  (Empty. File is needed)
  user.py
  mm.py
  discussions.py

 HTH,
  Thomas

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Re: Circular dependencies problem

[[EMAIL PROTECTED]]

But then this N:M field would only be used some times... it doesn't
seam as a good way to do this.

I could always create a big app with all the models but I would like
to be able have apps for each main class so my views.py is cleanly
separated.

Any more ideas? please.

Regards,

Luís


On Nov 13, 8:25 am, Thomas Guettler <[EMAIL PROTECTED]> wrote:
> Am Dienstag, 13. November 2007 09:08 schrieb Thomas Guettler:
>
>
>
> > Am Dienstag, 13. November 2007 03:35 schrieb [EMAIL PROTECTED]:
> > > Hello,
>
> > > i'm new to django so excuse if this is  a really stupid question.
>
> > > I have these three apps with are inter dependable, how can I make this
> > > work in Django maintaining all of this modules separate.
>
> > Do you really need three applications (user, multimedia, discussion)?
>
> > Maybe you can build one application with one model. You can put the
> > source into different files:
>
> > #models.py:
> > from models_user import User
> > from models_mm import Multimedia
> > from models_discussion import Discussion
>
> Sorry, even this won't help you. Maybe you could
> single out the User class if you create a N:M Field
> on Discussion, and write a property to access
> the discussion object like a foreign key.
>
> class User(...):
> def get_discussion(self):
> from ... import Discussion
> return discussion=Discussion.get(user=self)
> discussion=property(get_discussion)
>
>  Thomas


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[i18n] Questions on how it works...

[Nicolas Steinmetz]

Hello,

I read the i18n documentation but I'm not really at ease with it.

If I understood well :
* To translate models, I need to use gettext_lazy or ugettext_lazy
* In template :
** I need to set {% load i18n %} at the top of my template (should it be 
only in base.html or to any template part I call)
** "blocktrans" must be within a loop or if statement so that it works. 
There is no way to say that my template must be globally translated ? 
It's a little bit strange to set trans or blocktrans tag everywhere I 
need a translation... (I know that some element may not be translated 
but...)

So far, I start generated my po files but does not manage to get some 
values translated. I should have missed something but do not see what :-(

For ex, I tried with some values I get from CHOICES in my models :

{% blocktrans %}{{ profile.get_civility_display }}{% endblocktrans %}

I got :
KeyError at /cv/John-Doe/
u'profile.get_civility_display'

What sounds me strange is that I use gettext_lazy and no longer 
ugettext_lazy (maybe I generated po file when I used ugettext instead of 
_lazy).

Any idea about this ?
Nicolas


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Re: Verticity

[[EMAIL PROTECTED]]

http://www.verticity.com

On Nov 13, 2:26 pm, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
wrote:
> Verticity is currently hiring software enginers and programmers
> specialy dot net developers in thier regional office Karachi.
> little about verticity inc:
>
> VertiCity was founded on the premise that through the medium of the
> internet geographic barriers could be broken down and a truly global
> city, where IT services could be provided for clients throughout the
> world, would be created. Our REMS (Remote Employee Management System)
> allows our clients to take advantage of a pool of highly talented and
> cost effective IT professionals. Our services enable IT Application
> Development process to become efficient and cost effective. Not only
> have our services reduced our clients IT costs by up to 80%, but by
> providing them highly qualified professionals, VertiCity has also
> saved them immeasurable hours of search time and have made offshore
> outsourcing seamless and without borders.
>
> Verticity, Inc is a privately held and funded conglomeration of web/
> software technologies and services -first started in 2001. We are
> rooted in product and have produced innovations in distinct and
> growing B2B spaces. Many of our professionals are experts in their
> fields and by tapping into our resources, clients are able to take
> advantage of Verticity's outsourcing model which has proved to be
> highly effective and cost-saving.
>
> At Verticity, we help clients innovate their businesses to achieve
> extraordinary results from their customer relationships, business
> operations, and technology. Verticity's promise to our clients: to do
> whatever it takes to deliver the right business results, on time and
> on budget. We have consistently delivered on this promise, achieving
> success for our clients. Not happy?
>
> Clients choose Verticity for our commitment to their success, our
> dedication to delivering our promise, and the straightforward and
> collaborative way we work with them. Not many companies give their
> clients complete control over their offshore team. Verticity prides
> itself on that.


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Verticity

[[EMAIL PROTECTED]]

Verticity is currently hiring software enginers and programmers
specialy dot net developers in thier regional office Karachi.
little about verticity inc:

VertiCity was founded on the premise that through the medium of the
internet geographic barriers could be broken down and a truly global
city, where IT services could be provided for clients throughout the
world, would be created. Our REMS (Remote Employee Management System)
allows our clients to take advantage of a pool of highly talented and
cost effective IT professionals. Our services enable IT Application
Development process to become efficient and cost effective. Not only
have our services reduced our clients IT costs by up to 80%, but by
providing them highly qualified professionals, VertiCity has also
saved them immeasurable hours of search time and have made offshore
outsourcing seamless and without borders.

Verticity, Inc is a privately held and funded conglomeration of web/
software technologies and services -first started in 2001. We are
rooted in product and have produced innovations in distinct and
growing B2B spaces. Many of our professionals are experts in their
fields and by tapping into our resources, clients are able to take
advantage of Verticity's outsourcing model which has proved to be
highly effective and cost-saving.

At Verticity, we help clients innovate their businesses to achieve
extraordinary results from their customer relationships, business
operations, and technology. Verticity's promise to our clients: to do
whatever it takes to deliver the right business results, on time and
on budget. We have consistently delivered on this promise, achieving
success for our clients. Not happy?

Clients choose Verticity for our commitment to their success, our
dedication to delivering our promise, and the straightforward and
collaborative way we work with them. Not many companies give their
clients complete control over their offshore team. Verticity prides
itself on that.


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Re: CSS problem

[David]

Thank you Lazlo, today your my hero!
David


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Re: max_length / Upgrade error in tutorial part 1 (polls)

[matimba]

Thanks for clarifying that Matt - I thought I was going crazy.


On Nov 13, 11:01 am, Matt McClanahan <[EMAIL PROTECTED]>
wrote:
> On Nov 13, 12:38 am, [EMAIL PROTECTED] wrote:
>
> > I am stepping through Dajngo Tutorial (Part 1, to create polls
> > application) and get this error.
>
> > Unexpected keyword argument 'max length' when running "manage syncdb"
>
> > If I change it to "maxlength" it works:
>
> This is the proper solution when using the latest Django release.  A
> version of Django has not yet been released which uses max_length.
>
> > Without using the documentation from previous version - what can I do
> > to fix this?
>
> The documentation found athttp://www.djangoproject.com/documentation/0.96/
> is the right version to refer to when using the latest release 0.96.1.
>
> Matt


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Re: max_length / Upgrade error in tutorial part 1 (polls)

[Matt McClanahan]

On Nov 13, 12:38 am, [EMAIL PROTECTED] wrote:
> I am stepping through Dajngo Tutorial (Part 1, to create polls
> application) and get this error.
>
> Unexpected keyword argument 'max length' when running "manage syncdb"
>
> If I change it to "maxlength" it works:

This is the proper solution when using the latest Django release.  A
version of Django has not yet been released which uses max_length.

> Without using the documentation from previous version - what can I do
> to fix this?

The documentation found at http://www.djangoproject.com/documentation/0.96/
is the right version to refer to when using the latest release 0.96.1.

Matt


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max_length / Upgrade error in tutorial part 1 (polls)

[matimba]

I am stepping through Dajngo Tutorial (Part 1, to create polls
application) and get this error.

Unexpected keyword argument 'max length' when running "manage syncdb"

If I change it to "maxlength" it works:

I did see note in tutorial regarding old version and I was using an
earlier version (0.96) - I then loaded the latest version by:
- delete django directory from "site package"
- download 0.96.1 files (tar.gz)
- run python setup.py install

Still get the same error...

Without using the documentation from previous version - what can I do
to fix this?

I believe I am running latest version.

Import django
Django.VERSION

I see latest version (0.96.1)

Any other ideas, short of going back to previous version documents?
(which doesn't *really* solve the problem)

Many Thanks
Liam


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Re: Circular dependencies problem

[Thomas Guettler]

Am Dienstag, 13. November 2007 09:08 schrieb Thomas Guettler:
> Am Dienstag, 13. November 2007 03:35 schrieb [EMAIL PROTECTED]:
> > Hello,
> >
> > i'm new to django so excuse if this is  a really stupid question.
> >
> > I have these three apps with are inter dependable, how can I make this
> > work in Django maintaining all of this modules separate.
>
> Do you really need three applications (user, multimedia, discussion)?
>
> Maybe you can build one application with one model. You can put the
> source into different files:
>
> #models.py:
> from models_user import User
> from models_mm import Multimedia
> from models_discussion import Discussion
>

Sorry, even this won't help you. Maybe you could
single out the User class if you create a N:M Field
on Discussion, and write a property to access
the discussion object like a foreign key.

class User(...):
def get_discussion(self):
from ... import Discussion
return discussion=Discussion.get(user=self)
discussion=property(get_discussion)

 Thomas

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Re: Circular dependencies problem

[Thomas Guettler]

Am Dienstag, 13. November 2007 03:35 schrieb [EMAIL PROTECTED]:
> Hello,
>
> i'm new to django so excuse if this is  a really stupid question.
>
> I have these three apps with are inter dependable, how can I make this
> work in Django maintaining all of this modules separate.

Do you really need three applications (user, multimedia, discussion)?

Maybe you can build one application with one model. You can put the
source into different files:

#models.py:
from models_user import User
from models_mm import Multimedia
from models_discussion import Discussion

Since all depend on each other, I would not call each an application.
All three together build an application.

 Thomas

>
> discussion:
> from osite.user.models import User
> from osite.multimedia.models import Multimedia
> class Discussion(models.Model):
>  author = models.ForeignKey(User)
> ...
>
> class Comment(models.Model):
> author = models.ForeignKey(User)
> multimedia = models.ForeignKey(Multimedia)
> 
>
> user:
> from osite.discussion.models import Discussion
> class User(models.Model):
>  discussion_on_profile = models.ForeignKey(Discussion)
> --
>
> multimedia:
> from osite.user.models import User
> from osite.discussion.models import Discussion
>
>
> class Multimedia(models.Model):
> author = models.ForeignKey(User)
> discussion = models.ForeignKey(Discussion)
> ...
> class Album(models.Model):
> author = models.ForeignKey(User)
> ...
>
> With best regards,
>
> Luis
>
>
> 

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