On 28 ., 05:56, "Jeremy Dunck" <[EMAIL PROTECTED]> wrote:
On 12/27/06, Vasily Sulatskov <[EMAIL PROTECTED]> wrote:
> I have models similar to following:
> class User(models.Model):
> name = models.CharField(maxlength=100)
> class Keyword(models.Model):
> name = models.CharField(maxlength=100)
> user = models.ForeignKey(User)
> class Article(models.Model):
> name = models.CharField(maxlength=100)
> user = models.ForeignKey(User)
> keywords = model.ManyToManyField(Keyword,
> filter_interface=models.HORIZONTAL)
> Admin works but displays on Article edit page Keywords of all users,
> while I want it to display Keywords only of the same User only.This isn't
exactly what you asked for, but perhaps it'll
help:http://code.djangoproject.com/wiki/CookBookPredicates
Thanks for the reply but that didn't help.
I find a workaround for this problem, imho it's even clunky enough to
be called kludge :-)
class RelatedManyToManyField(models.ManyToManyField):
def __init__(self, *args, **kwds):
self.related_set_name = kwds.pop('related_set_name')
self.__manipulator = None
models.ManyToManyField.__init__(self, *args, **kwds)
def get_manipulator_fields(self, opts, manipulator, change,
name_prefix='', rel=False, follow=True):
self.__manipulator = manipulator
return super(RelatedManyToManyField,
self).get_manipulator_fields(
opts, manipulator, change, name_prefix, rel, follow)
def get_choices_default(self):
if hasattr(self.__manipulator, 'original_object'):
profile = self.__manipulator.original_object.user_profile
objects = list(getattr(profile,
self.related_set_name).all())
choices = [(obj.id, str(obj)) for obj in objects]
else:
# Fallback for AddManipulator case
# Possible solution
#choices = models.Field.get_choices(self,
include_blank=False)
# I dont't want any choices until object is fully created
choices = []
self.__manipulator = None
return choices
I examinded calls django makes during form creation and find out that
call to get_manipulator_fields() is the last call which have
information about manipulator it's related to and therefore can access
it's original_object. So I overrided get_manipulator_fields() to store
manipulator and used that information in get_choices_default().
It works for me.
Is there any better solution?
Or perhaps it's possible to improve this solution to the point it will
make way to mainline Django?
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