Re: Optional foreign key with django?
This solved my problem On 9 sep, 12:18, Carlton Gibson <carlton.gib...@gmail.com> wrote: > On 9 Sep 2010, at 12:04, bagheera wrote: > > >> On Sep 8, 11:14 pm, maroxe <bachir...@gmail.com> wrote: > >>> Hi, In my models I want to have an optional field to a foreign key. I > >>> tried this: > > >>> field = models.ForeignKey(MyModel, null=True, blank=True, > >>> default=None) > > >>> But i am getting this error: > > >>> model.mymodel_id may not be NULL > > I think the error is that SQLite treats columns with defaults as NOT NULL. > > As far as I can see, you don't need the `default=None` in your model > declaration. Change it to: > > field = models.ForeignKey(MyModel, null=True, blank=True) > > -- I have multiple apps using SQLite that do exactly this, so to quote an > earlier post, "this should just work (TM)" > > HTH > > Regards, > Carlton -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Returning an inclusion tagLLKKJJ
Hi, I am suffering whereever i try to do something in django that is
not common(in django, not in python in general)
For example, i don't know how to return an inclusion tag. This.
obviously, won't work:
@register.inclusion_tag('template.tpl')
def myinclusiontag(parameter):
return {'var': parameter.attr1}
@register.inclusion_tag('template2.tpl')
def myinclusiontag2(parameter):
return {'var': parameter.attr2}
@register.simple_tag
def mysimpletag(paramter):
if parameter.attr: return myinclusiontag(parameter)
else: return myinclusiontag2(paramter)
mysimpletag return a dict(first returned by the inclusion tag), wich
is a normal behaviour, but this is not my i want.
help pls
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How does django convert string to modules
Hi, I am trying to understand an other magic thing about django: it
can convert strings to modules. In settings.py, INSTALLED_APPS is
declared like that:
INSTALLED_APPS = (
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
)
All it contains is strings. But django will convert those strings to
modules and import them later.
I want to do be able to do the same thing. but i don't know how. I
have a dictionnary of rederer dispatcher in settings.py:
RESOUCE_RENDERER = {
'video': 'video_player',
'audio': 'audio_player',
}
I want to use it later like this: RESOURCE_RENDERER'video' I cannot
assign directly the function name(eg video_player) because it lives in
a module that needs settings.py
Any idea?
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django magic: context passed to template
Hi, There is something i don't get in django template system. I have a FileField in my model called myfile. If i pass an instance of my model to a template, i can access file.size (this is an example). Form where this variable 'size' come from?? it's not part of the FileField class as far as i know. A small test: def save(self): super(UploadItem, self).save() import logging; logging.debug(file.size) this snippet generates this error: type object 'file' has no att is django so magic? -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Optional foreign key with django?
Hi, In my models I want to have an optional field to a foreign key. I tried this: field = models.ForeignKey(MyModel, null=True, blank=True, default=None) But i am getting this error: model.mymodel_id may not be NULL i am using sqlite edit: if it can help, here is the exception location: /usr/lib/python2.6/site-packages/django/db/backends/sqlite3/base.py in execute, line 200 so it's sqlite specific problem, i think. PS: i droped the whole table and synced before getting this error. -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
django not taking in consideration model fields declared in __init__
Hi, When using Model class like this: class MyModel(models.Model): def __init__(self, *args, **kwargs): self.myfield = models.Field() super(MyModel, self).__init__(*args, **kwargs) It doesn't take into consideration myfield(in the admin form, when saving the object... ) But if i declare like that: class MyModel(models.Model): myfield = models.Field() It works just fine. Why? -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: Forms.is_valid() Always return False
The problem occurs only when using AuthenticationForm! On Jul 11, 4:14 pm, maroxe <bachir...@gmail.com> wrote: > Hi all, > I have a problem with django 1.2: > is_valid returns always False, and form.errors is empty. > I use AuthentificationForm provided by django. > I have created a bound form: > form = AuthentificationForm(request.POST) > > and this request.POST: > [u'f871257kikf70a95e1197c8af01597eb'], u'password': [u'mypass']}> > > I believe it's a probleme related to django new securitiy system > against csrf attaks. > > Any help pls? -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Forms.is_valid() Always return False
Hi all, I have a problem with django 1.2: is_valid returns always False, and form.errors is empty. I use AuthentificationForm provided by django. I have created a bound form: form = AuthentificationForm(request.POST) and this request.POST: I believe it's a probleme related to django new securitiy system against csrf attaks. Any help pls? -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
