Django REST API for a simple forum app

Require a simple Django-DRF REST API for a forum app created. No front-end, just back end.

The app would have users and rooms, in the rooms there would be posts which have comments.

The API would need to:
- Allow for user sign-up via REST interface (email & password, no username)
- Allows REST authentication using email & password
- User model should use Django's AbstractUser class

If user is authenticated:
- Allows user to update their own details (firstname, lastname)
- Allows all Rooms to be listed
- Allows Post to be created in given Room
- Allows listing of all Posts in given Room
- Allows display of given Post and with all of the post's Comments
- Allows Comments to be created on given Post
- Allows deleting and updating of own Comment

- Uses MySQL/MariaDB database
- Uses Python 2.* and Django 1.11 LTS

These are the database tables/fields:

User: email, password, firstname, lastname
Room: title, description
Post: user_id, room_id, created_datetime, subject_text, body_text, topic_id
Comment: user_id, post_id, created_datetime, updated_datetime, body_text, is_edited