[API] Post Comments (for learning)

[VictorWinberg]

[API] Post Comments

The post comment resource should fulfill requirements below

• POST /api/posts/:id/comments | Create a post comment
• GET /api/posts/:id/comments | Get a listing of post comments

The post resource should fulfill requirements below

• GET /api/posts/:id | Get details about a post and it's comments

Generate a json post comment resource with body

Either you generate overload with gen.json or you generate less by gen.model, you choose.

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mix phoenix.gen.json PostComment post_comments body:text post_id:references:posts
or
mix phoenix.gen.model PostComment post_comments body:text post_id:references:posts

Then associate Post-model to PostComment-model and change :on_delete to :delete_all in our migration.

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web/models/post.ex

...
schema "posts" do
    field :title, :string
    field :body, :string
    has_many :comments, Nexpo.PostComment
  end
...

priv/repo/migrations/[TIMESTAMP]_create_post_comment.ex

...
create table(:post_comments) do
      add :body, :text
      add :post_id, references(:posts, on_delete: :delete_all)
...

Then migrate

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Remember to update your repository by running migrations:

$ mix ecto.migrate

Then add route

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Add the resource to your api scope in web/router.ex:

...
resources "/posts", PostController do
  resources "/comments", PostCommentController, only: [:show, :create]
end
...

Edit your json Post and PostComment resource so it fulfills requirements.

Help can be found here