how to use popup in django admin to select from another class

Question

i want to use popup to fill input in django admin i saw it in class Email addresses as the follwing pic

Answer 1

It's an attribute raw_id_fields that you can use while registering your models in the admin section. raw_id_fields = ('author',) Its use is that the author field is displayed with a lookup widget that can scale much better than a drop-down select input when you have thousands of users.