Django Form Inheritance

Form inheritance (docs) in Django is extremely straightforward:

	class EnhancedModelForm(ModelForm):
	…

	class SuperEnhancedModelForm(EnhancedModelForm):
	…

view raw

forms.py

hosted with ❤ by GitHub

You can also subclass the parent’s Meta inner class if you want to change the Meta.fields or Meta.excludes lists:

	class EnhancedModelForm(ModelForm):
	class Meta:
	model = MyModel
	fields = ('field1', 'field2')

	class SuperEnhancedModelForm(EnhancedModelForm):
	class Meta(EnhancedModelForm.Meta):
	model = MyModel
	fields = ('field3', 'field4')

view raw

forms.py

hosted with ❤ by GitHub

But what if you want to add to the fields rather than replace them? This is actually straightforward as well:

	class EnhancedModelForm(ModelForm):
	class Meta:
	model = MyModel
	fields = ('field1', 'field2')

	class SuperEnhancedModelForm(EnhancedModelForm):
	class Meta(EnhancedModelForm.Meta):
	model = MyModel
	fields = EnhancedModelForm.Meta.fields + ('field3', 'field4')

view raw

forms.py

hosted with ❤ by GitHub

Enter your comment here...

Fill in your details below or click an icon to log in:

Email (required) (Address never made public)

Name (required)

Website

You are commenting using your WordPress.com account. ( Log Out / Change )

You are commenting using your Twitter account. ( Log Out / Change )

You are commenting using your Facebook account. ( Log Out / Change )

Connecting to %s