gistfile1.txt

defmodule XXX do
  import Plug.Conn
  import Phoenix.Controller

  def __using__(params) do
    params
  end
  
  defmacro is_edit_path(conn) do
    conn.request_path == Iea.Router.Helpers.teacher_user_path(conn, :edit_profile)
  end
end


defmodule Plug.TeacherProfileControl do
  import Plug.Conn
  import Phoenix.Controller
  alias Iea.User
  import XXX
  
  def init(opt) do
    opt
  end
  
  def call(conn, _params)  when is_edit_path(conn) do
    conn
  end
  

  def call(conn, _params) do
    user = conn.assigns.current_user
    changeset = case user.contract_type do
                  "full time" ->
                    User.fulltime_teacher_update_changeset(user, %{})
                  "part time" ->
                    User.parttime_teacher_update_changeset(user, %{})
                end
    case changeset.errors do
      [] -> conn
      _ ->
        conn
        |> redirect(to: Iea.Router.Helpers.teacher_user_path(conn, :edit_profile))
        |> halt
    end
  end
end