#10069: 'RelatedObject' object has no attribute 'unique' thrown by ModelForm
validation
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Reporter: kmtracey | Owner: nobody
Status: new | Milestone:
Component: Forms | Version: 1.0
Keywords: | Stage: Unreviewed
Has_patch: 0 |
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Reported here: http://groups.google.com/group/django-
users/browse_thread/thread/210298adf4a0f280
More easily recreatable by creating a !ModelForm for the tutorial Poll
model that looks like this:
{{{
#!python
class PollForm(forms.ModelForm):
choice = forms.CharField(required=False)
class Meta:
model = Poll
exclude = ('pub_date',)
}}}
and then from `manage.py shell`:
{{{
>>> from polls.models import Poll, PollForm
>>> pf = PollForm(data={'question': "Where's the beef?"})
>>> pf.is_valid()
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/home/kmt/tmp/django/trunk/django/forms/forms.py", line 120, in
is_valid
return self.is_bound and not bool(self.errors)
File "/home/kmt/tmp/django/trunk/django/forms/forms.py", line 111, in
_get_errors
self.full_clean()
File "/home/kmt/tmp/django/trunk/django/forms/forms.py", line 241, in
full_clean
self.cleaned_data = self.clean()
File "/home/kmt/tmp/django/trunk/django/forms/models.py", line 223, in
clean
self.validate_unique()
File "/home/kmt/tmp/django/trunk/django/forms/models.py", line 251, in
validate_unique
if f.unique and self.cleaned_data.get(name) is not None:
AttributeError: 'RelatedObject' object has no attribute 'unique'
}}}
Problem is the added 'choice' field on the form is not actually a Poll
model field, but is findable via Poll's _meta.get_field_by_name due to the
Choice model having a !ForeinKey pointing to Poll. Fix is simple, I
think, but I'm creating the ticket so someone searching on the problem in
the future might find that it once existed and when it was fixed.
--
Ticket URL: <http://code.djangoproject.com/ticket/10069>
Django <http://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
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