Question

I want to display different forms in change_form depending on some model field’s values.

For example (imagine we have a realty agency):

if item.type == 'sale', I want to display ‘price’ field

if item.type == 'rent', I want to display ‘price_per_month’, ‘price_per_month’ etc – but not price

ps: example is not perfect – because its problem can be solved via database structure – but my question is about interface

Answer 1

There’s a ModelAdmin method get_form which takes the request and the object (watch out, it will be None when you’re adding a new instance) and returns the form class.

The usual warning about overriding undocumented methods applies, be careful when upgrading as Django’s api stability promise does not apply.