register.ex

  def register(conn, %{"user" => user_params}) do
    case ElixirStream.RegisterAction.sign_up(user_params) do
      {:ok, user} ->
        conn
        |> put_flash(:info, "You have signed up and logged in!")
        |> put_session(:user_id, user.id)
        |> redirect(to: entry_path(conn, :index))
      {:error, changeset} ->
        conn
        |> render("register_form.html", changeset: changeset)
    end
  end