Building the controller pipeline

Let’s start with the example controller we created in the previous chapter as part of an example for the Goldcrest.Controller module:

lib/goldcrest/support/example_controller.ex

defmodule Goldcrest.ExampleController do
  import Plug.Conn
  import Goldcrest.Controller
  def call(conn, action: action) do
    apply(__MODULE__, action, [conn, conn.params])
  end
  def greet(conn, _params) do
    conn
    |> put_status(200)
    |> render(:json, %{status: "ok"})
  end
  # ..
end

And just as in the previous chapter, we can start an HTTP server serving the preceding controller by running an iex shell and loading the controller and router files:

$ iex -S mix
iex> Code.require_file("./lib/goldcrest/support/example_controller.ex")
iex> Code.require_file("./lib...