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copied!<p>This is the solution I came up with. Requires subclassing ModelForm and BaseFormsetInline</p> <pre><code>class BrandBaseFormSet(BaseInlineFormSet): def save_new(self, form, commit=True): import ipdb;ipdb.set_trace() if form.cleaned_data['reassign_existing'] \ and form.cleaned_data['confirm_reassign'] \ and not form.instance.pk: return form.cleaned_data['reassign_existing'] else: import ipdb;ipdb.set_trace() return super(BrandBaseFormSet, self).save_new(form, commit=commit) class BrandAdminForm(forms.ModelForm): """ Allow for reassigning of reverse fk relationships inline of the child. """ reassign_existing = AutoCompleteSelectField('brand', required=False) confirm_reassign = BooleanField(required=False) def __init__(self, *args, **kwargs): super(BrandAdminForm, self).__init__(*args, **kwargs) self.fields['name'].required = False def clean(self): """ Here we check if its a new form or reassigning an existing brand. If its reassigning, we just do that in this method. :return: cleaned form data """ cleaned_data = super(BrandAdminForm, self).clean() if cleaned_data['reassign_existing'] \ and cleaned_data['confirm_reassign'] \ and not self.instance.pk: cleaned_data['reassign_existing'].company = self.instance.company cleaned_data['reassign_existing'].save() return cleaned_data elif cleaned_data['reassign_existing'] \ and cleaned_data['confirm_reassign'] \ and self.instance.pk: raise forms.ValidationError("You can't reassign AND add/edit a brand in the same form. Clear one of the sections.") else: if not cleaned_data['name']: msg = u"You must add a name to a new brand." self._errors["name"] = self.error_class([msg]) return cleaned_data def save(self, *args, **kwargs): if not self.cleaned_data['reassign_existing']: return super(BrandAdminForm, self).save(*args, **kwargs) else: return self.cleaned_data['reassign_existing'] class Meta: model = Brand </code></pre>

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