How can i get the conn struct after Phoenix controller action

Question

I want to send some conn info to my Elasticsearch after all controller actions of my project, example: The controller action response, the request params and the endpoint.

What can we do if we need to work with the conn struct returned by the controller after the action is resolved?

Please provide some context, like source code or pseudo source code showing what do you want to do and what do you expect to get. — Aleksei Matiushkin, Jan 07 '20 at 17:18

score 3 · Answer 1 · answered Jan 07 '20 at 20:14

I got it creating a plug in my application:

defmodule MyAppWeb.Plugs.RequestLogger do
  @moduledoc false

  alias Plug.Conn

  def init(opts), do: opts

  def call(conn, _opts) do
    IO.puts("Getting conn after all controller actions here " <> Integer.to_string(conn.status))
    conn
  end
end

And setting it in "MyAppWeb.Endpoint" after the "MyAppWeb.Router":

defmodule MyAppWeb.Endpoint do
  # ...
  plug MyAppWeb.Router
  plug MyAppWeb.Plugs.RequestLogger
end

How can i get the conn struct after Phoenix controller action

1 Answers1