Overriding Choices for a field in the Form not working when using ModelForm | Django 3.2

[Swaroop P]

Hi All

Facing the following issue after migrating to 3.2.

Example:

class SomeModel(models.Model):

field1 = models.CharField(choices=[])

class SomeModelForm(forms.ModelForm):

init(*args, kwargs):

super().init(*args kwargs)
self.fieldsfield1 = <some choices dynamically generated>

class Meta:

model = SomeModel
fields = [ 'field1' ]

In the above case any choice selected is shown with the error "not a valid choice" this is happening because model fields is revalidated again in modelform._post_clean() function.

Intermediate solution is to remove choices from modelfield and reinitalize field in form init wiht dynamic choices. But In previous versions We had choices to only override some attributes of a field rather than reinitalizing whole field.

Thanks