002-adding-comments-with-ecto-has-many-and-belongs-to (Sept 2021)

Reference

https://elixircasts.io/adding-comments-with-ecto-associations

Using

• Erlang 24.0
• Elixir 1.12.3
• NodeJS 14
• Pheonix 1.5.12

What I learnt

1. mix phx.gen.schema Comment comments body:text post_id:references:posts to create a schema
2. All controllers in Phoenix are in singular while that in rails are usually in plurals.
3. Have to define your own Context, here is Blogs for data manipulations
4. Rely on module Blogs to do the handlers

Notes for the latest version of phoenix

• mix pheonix.gen.model is now as mix phx.gen.schema
• Since controllers and views are in teacher_web, they are under the module of TeacherWeb, not Teacher
• Similarly, we load use TeacherWeb :controller, instead use Teacher.Web :controller
• In the past, the context has defined as Repo, now it has to be configurable.