intigratech

I have a m2m field as follows: class Contact(RootModel): categories = fields.ManyToManyField('core.ContactCategory', related_name='contacts', through='fkcontactcategory', description="Categories", on_delete=fields.SET_NULL) I set null=False on the field. categories = fields.ManyToManyField('core.ContactCategory', related_name='contacts', null=False, through='fkcontactcategory', description="Categories", on_delete=fields.SET_NULL)...