If you need formfield_callback:
ModelFormMetaclass = type(forms.ModelForm) Form = ModelFormMetaclass( 'DynForm', (forms.ModelForm,), {'Meta': type('Meta', tuple(), {'model': model})}, formfield_callback=field_callback)
If you need formfield_callback:
ModelFormMetaclass = type(forms.ModelForm) Form = ModelFormMetaclass( 'DynForm', (forms.ModelForm,), {'Meta': type('Meta', tuple(), {'model': model})}, formfield_callback=field_callback)