Hi Cesar, It's all the documentation:
https://docs.djangoproject.com/en/dev/topics/forms/formsets/#custom-formset-validation You just have to raise a ValidationError(); Django will then add an error that spans the entire formset. If you want to evaluate errors in clean(), but force the actual error to appear against a specific field, that's possible too - you just need to emulate what Django is doing behind the scenes. That means inserting the error into the error dictionary, and removing the error value from cleaned_data: self._errors['field name'] = self.error_class(['This field has a problems']) del cleaned_data['field_name'] You might need to do this if you won't know if a specific value is valid until you've checked all the individual values (e.g., A must be greater than B - you can't check that until you know both A and B exist, which won't be the case in the clean_A and clean_B methods) I hope that helps! Yours, Russ Magee %-) On Sun, Jun 1, 2014 at 11:52 PM, César García Tapia <[email protected]> wrote: > Hi. I already asked this question in StackOverflow, but I didn't get any > useful answer. Let's try here :-) > > I have a BaseInlineFormSet, and I'd like to validate a field in the parent > form based on the values on the fields of the children. As seen in the > docs, the only method to make a custom validation is clean(), but I can't > find a way to add errors to the parent form, only for the children. > > In the following code I build a formula. Each variable comes from a inner > form, and if the global formula don't validate, I'd like to add an error to > the parent's form field formula > > class CustomInlineFormSet(BaseInlineFormSet): > def clean(self): > formula = self.instance.formula > variables = [] > for form in self.forms: > if 'formula_variable' in form.cleaned_data: > variables.append(form.cleaned_data['formula_variable']) > > valid, msg = validate_formula(formula, variables) > if not valid: > WHAT HERE??? > > Thank you!! > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/django-users. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/87ce32a8-782e-4248-8b8c-046b6eef0904%40googlegroups.com > <https://groups.google.com/d/msgid/django-users/87ce32a8-782e-4248-8b8c-046b6eef0904%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAJxq849ckBkXM9Wbfb%2B%3DAnu5BALoN6FWT7%3DGyTDHqvp8u%2BT%3Duw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
