Question

I have a real annoying issue with form.is_valid() always returning false on one of my forms, and this only happens when I manually define fields in a modelform, and in particular use ModelChoiceField and ModelMultipleChoiceFields passing in my own custom querysets

location = forms.ModelChoiceField(required=False, widget = forms.Select(), queryset = Location.objects.none())

I cannot find much in the way of good documentation about ModelForm.is_valid(), and essentially, if I don’t call it everything works fine. I am happy with this except for the fact that every Django forms example makes this call to is_valid().

So I guess my question is:

1. Is it okay to not check if a form is valid?
2. If it is not, any ideas why it is always returning false?

Thanks,

Mike

Answer 1

Try to find out the specific validation errors for your form, which will possibly give you more information about the specific error:
http://docs.djangoproject.com/en/dev/topics/forms/#looping-over-the-form-s-fields