Let me try to assist. A forms is_valid method causes 3 types of cleaning methods to be run. Based on that, I'm sure you really don't need to override it.
I really don't understand what you mean by "I want the description field to be not blank/not the empty string" so maybe I could have been of more help but I'm sure a solution to your problem would be to override either the form's clean_fieldname or clean methods. Check: https://docs.djangoproject.com/en/dev/ref/forms/validation/ which is a link to the documentation on form validation On 9/28/12, Lachlan Musicman <data...@gmail.com> wrote: > Hola, > > I'm searching without much luck and can't see the answer in the docs. > > Am wanting to override the is_valid() method on a model (I think > that's what I want). > > Basically, I have a choices field, and if one of those choices is > selected, then I want a description field to be not blank/not the > empty string. If it's the other two choices, I want the description > field to be blank/empty string. > > First, I override is_valid() as a model method? > > Second, how do I return a false from is_valid()? > > ie, this is a rough up of what I'm looking for - what goes in place of > return FALSE/TRUE? > > def is_valid(self): > > if enrolment.mark == 'W': #student has withdrawn from course > -if enrolment.withdrawal_reason == '': #must have reason > --return FALSE > elif enrolment.withdrawal.reason != "": #ie, since enrolment.mark > isn't 'W', confirm that the enrolment.reason is "" > -return FALSE > else: > -return TRUE > > Cheers > L. > -- > ...we look at the present day through a rear-view mirror. This is > something Marshall McLuhan said back in the Sixties, when the world > was in the grip of authentic-seeming future narratives. He said, “We > look at the present through a rear-view mirror. We march backwards > into the future.” > > http://www.warrenellis.com/?p=14314 > > -- > 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. > > -- Sent from my mobile device -- 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.