I want to use django-mama-cas to complete the CAS login, but the login module that comes with the system is a little too simple. I want to add something by myself, but Form cannot set its own defined Form (LOGIN Template in the setting file. I would like to ask you to customize Form? like this at this time. At present, we are going to modify the source code of django-mama-cas directly, but this is not good, is it?