#34774 closed New feature (duplicate)

ModelAdmin form validation that cross-validates main form and inline formsets

Reported by: ldeluigi Owned by: nobody
Component: contrib.admin Version: 4.2
Severity: Normal Keywords: formsets crossvalidation inlines form admin modeladmin
Cc: Triage Stage: Unreviewed
Has patch: no Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: yes UI/UX: no


I'd like to validate the admin change form submission for my entity together with its inline formsets.
In particular, I need to compute and validate a field based on the model relationships, that is its inlines that were submitted.
I can't use any of the forms clean() method because they can't access other forms of the same submission, unless I'm parsing the request manually (duplicating the code from the inline formset arguments parser).

instead of calling the all_valid() method directly from _changeform_view() in the ModelAdmin implementation, you could first call an instance method like for example self.validate_formsets(form, formsets) which returns True if all the forms are valid.

The default implementation in ModelAdmin would be:

def validate_formsets(self, form, formsets):
    form_validated = form.is_valid()
    return all_valid(formsets) and form_validated

then users can override it to customize the behavior, including cross-validating forms cleaned data.

Change History (2)

comment:1 by ldeluigi, 11 months ago

Summary: Admin form validation that cross-validates main form and inline formsetsModelAdmin form validation that cross-validates main form and inline formsets

comment:2 by Mariusz Felisiak, 11 months ago

Has patch: unset
Resolution: duplicate
Status: newclosed

Duplicate of #12780.

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