This is a very minimal example of demonstrating how Phoenix and RethinkDB can work together to create a collaborative editor. It intentionally glosses over a lot things (user registration, document creation, etc.) to simplfy the demonstration.

You can see a video of it in action here: https://www.youtube.com/watch?v=w4u_o9zlqiA

• brew install rethinkdb
• rethinkdb

• mix deps.get
• npm install
• mix phoenix.server

Visit localhost:4000/documents/init in your browser. This will initialize two documents in the DB. Now visit localhost:4000/documents and pick a document (e.g. http://localhost:4000/documents/show?id=a48ead01-47f8-4e0a-9742-f8a02437b6c3).

Add a query param to specify your user:

http://localhost:4000/documents/show?id=a48ead01-47f8-4e0a-9742-f8a02437b6c3&user=Alice

Now open up more windows while changing the user:

http://localhost:4000/documents/show?id=a48ead01-47f8-4e0a-9742-f8a02437b6c3&user=Bob

http://localhost:4000/documents/show?id=a48ead01-47f8-4e0a-9742-f8a02437b6c3&user=Eric

Type in one of the windows and notice how the content in all the windows is updated.