On Friday, September 28, 2012, Babatunde Akinyanmi wrote: > 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. > > Yes, I've just discoverde the ValidationError e part of the docs :|
> 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. > ie, if e.mark = W, e.descr must be >"" # it can be anything from "a" to "pregnant" to "killed" to "this is not an empty string" or " this is not a blank string" else e.descr == "" #this is a blank or empty string > Check: https://docs.djangoproject.com/en/dev/ref/forms/validation/ > which is a link to the documentation on form validation > cheers - since I am using the admin forms, I was hoping I could add it to the model, but is ok if I need to rewrite the forms cheers L. > On 9/28/12, Lachlan Musicman <data...@gmail.com <javascript:;>> 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 if enrolment.mark == 'W': #student has withdrawn from course 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<javascript:;> > . > > To unsubscribe from this group, send email to > > django-users+unsubscr...@googlegroups.com <javascript:;>. > > 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<javascript:;> > . > To unsubscribe from this group, send email to > django-users+unsubscr...@googlegroups.com <javascript:;>. > For more options, visit this group at > http://groups.google.com/group/django-users?hl=en. > > -- ...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.
