ExOperation article: Setup

setup.ex

# mix.exs
{:ex_operation, “~> 0.4”}

# config/config.exs
config :ex_operation, repo: MyApp.Repo

# lib/myapp/operation.ex
defmodule MyApp.Operation do
  defmacro __using__(opts) do
    quote do
      use ExOperation.Operation, unquote(opts)
      import MyApp.Operation
    end
  end

  # custom DSL extensions
end

# lib/myapp_web.ex
def run(operation, conn, params) do
  context = %{user: conn.assigns.current_user}
  operation |> ExOperation.run(context, params)
end

# lib/myapp_web/controllers/order_controller.ex
def checkout(conn, params) do
  with {:ok, %{result: order}} <- Order.Checkout |> run(conn, params) do
    render conn, order: order
  end
end

I've never had any success with the function at lib/myapp_web.ex
Do you have a sample that shows this setup?

@churcho Sure. Check it out https://github.com/avcg/sires_task_api/blob/master/lib/sires_task_api_web.ex#L31-L34

Yea I just hooked that in. The gist should say where within lib/myapp_web.ex preferably within the def controller ...
It's tripped me a few times :-)