Fixed #34187 -- Made UserCreationForm save many-to-many fields.
PR #16333 ↗ · django/django · · merged Nov 29, 2022 · +35−0 · base 60a7bd89860e
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UserCreationForm should save data from ManyToMany form fields
Description
When using contrib.auth.forms.UserCreationForm with a custom User model which has ManyToManyField fields, the data in all related form fields (e.g. a ModelMultipleChoiceField) is not saved.
This is because unlike its parent class django.forms.ModelForm, UserCreationForm.save(commit=True) omits to call self.save_m2m().
This has been discussed on the #django-developers mailing list https://groups.google.com/u/1/g/django-developers/c/2jj-ecoBwE4 and I'm ready to work on a PR.
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