Your query executes in module import time and it happens only one time. So
you cannot reevaluate it using choices field param like that.
Solution - redefine form `__init__` and manually reassign choices to given
field every time form is created.
def __init__(self, *args, **kwargs):
super(MyForm, self).__init__(*args, **kwargs)
self.fields['carmake'].choices = Carmake.get_makelist()
On Fri, Jan 23, 2009 at 3:20 PM, phoebebright <phoebebright...@gmail.com>wrote:
>
> Have been reluctant to post on this one as have come across many many
> discussion during the 3 days of lack of success on resolving this
> issue, but none has left me with a solution.
>
> I have a form with a dropdown generated from a query.
>
> This is in the form:
> carmake = forms.ChoiceField(choices=Carmake.get_makelist(),
> label='Make')
>
> This is in the model:
>
> class Carmake(models.Model):
> name = models.CharField('Make', max_length=20)
>
> def __unicode__(self):
> return self.name
>
> @classmethod
> def get_makelist(a):
>
> return [('Any', 'Any Make')] + [(item, item) for item in
> Car.objects.all().values_list('model__make__name',
> flat=True).select_related().distinct()]
>
>
> Predictably, the dropdown doesn't update when new makes are added
> unless I restart the apache server. I have tried everything suggested
> by other posts and the example above is a close as I can get to the
> example in the documentation that suggests these two queries will both
> be evaluated.
> >>> print [e.headline for e in Entry.objects.all()]
> >>> print [e.pub_date for e in Entry.objects.all()]
>
> I understand this has been discussed to death, but can someone please
> enlighten me on a solution which will ALWAYS re-evaluate this query??
>
> >
>
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Django users" group.
To post to this group, send email to django-users@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
-~----------~----~----~----~------~----~------~--~---
