All,
I had previously been using a bit of a hack (thought I found examples
of this on the mailing list, but can't find any evidence now) so that
I could actually associated field specific errors with the actual
field instead of having everything stuffed into __all__ /
non_field_errors.
The hack went something like this:
class MyForm(forms.Form):
field_A = forms.SomeField()
# many other fields etc.
field_Z = forms.SomeField(required=False) # not required in
isolation, but required if field_A...
def clean(self):
if 'field_A' in self.cleaned_data and 'field_Z' not in
self.cleaned_data:
self.errors['field_Z'] = forms.util.ErrorList([u"Field Z
is required if-and-only-if Field A has input, and passes validation"])
return self.cleaned_data
I have a very long complicated form with many interrelated fields, so
it helps to have the errors physically near the fields that need
attention, rather than just say at the top "These 5 field names had
errors, now go find the fields!" (I wish the form were more sane, but
I have no control over this, I just have to deal as best I can).
Obviously the first step is to stop using the hack, but without any
concrete examples in the official documentation[1], it's not easy to
figure out the 'best practices' here. Ideally, I should be able to
raise/add field specific error messages in the Form.clean() method
(not entirely sure what the utility of __all__ is, but everyone has
their own use cases).
Another issue, what if I also need to check that field_K is present if
field_J is? At the `clean_field_K` level the answer is to `raise
forms.ValidationError`, but I can't exactly `raise
forms.ValidationError` errors twice in the same Form.clean() method
and expect both of these errors to be returned can I?
Thanks,
John-Scott
[1]
http://www.djangoproject.com/documentation/forms/#custom-form-and-field-validation
--~--~---------~--~----~------------~-------~--~----~
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 [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/django-users?hl=en
-~----------~----~----~----~------~----~------~--~---
