versioned-router.diff

diff --git a/lib/pants_web/endpoint.ex b/lib/pants_web/endpoint.ex
index c24852a..a8ae2cf 100644
--- a/lib/pants_web/endpoint.ex
+++ b/lib/pants_web/endpoint.ex
@@ -45,7 +45,19 @@ defmodule PantsWeb.Endpoint do
     signing_salt: "HqMY6W5G"
   )
 
-  plug(PantsWeb.Router)
+  def version(conn, []) do
+    content_type = get_req_header(conn, "content-type")
+    "application/json; version=" <> version = hd content_type
+
+    if version == "2" do
+      PantsWeb.V2.Router.call(conn, [])
+    else
+      PantsWeb.Router.call(conn, [])
+    end
+  end
+  plug(:version)
+
+  #plug(PantsWeb.Router)
 
   @doc """
   Callback invoked for dynamically configuring the endpoint.
diff --git a/lib/pants_web/v2/controllers/jean_controller.ex b/lib/pants_web/v2/controllers/jean_controller.ex
new file mode 100644
index 0000000..a392082
--- /dev/null
+++ b/lib/pants_web/v2/controllers/jean_controller.ex
@@ -0,0 +1,13 @@
+defmodule PantsWeb.V2.JeanController do
+  use PantsWeb, :controller
+
+  alias Pants.Wardrobe
+  alias Pants.Wardrobe.Jean
+
+  action_fallback(PantsWeb.FallbackController)
+
+  def index(conn, _params) do
+    jeans = Wardrobe.list_jeans()
+    render(conn, PantsWeb.JeanView, :index, jeans: jeans, version: "2")
+  end
+end
diff --git a/lib/pants_web/v2/router.ex b/lib/pants_web/v2/router.ex
new file mode 100644
index 0000000..06ebba0
--- /dev/null
+++ b/lib/pants_web/v2/router.ex
@@ -0,0 +1,13 @@
+defmodule PantsWeb.V2.Router do
+  use PantsWeb, :router
+
+  pipeline :api do
+    plug(:accepts, ["json"])
+  end
+
+  scope "/api", PantsWeb.V2 do
+    pipe_through(:api)
+
+    resources("/jeans", JeanController, only: [:index])
+  end
+end
diff --git a/lib/pants_web/views/jean_view.ex b/lib/pants_web/views/jean_view.ex
index fa5dd53..be6d429 100644
--- a/lib/pants_web/views/jean_view.ex
+++ b/lib/pants_web/views/jean_view.ex
@@ -2,6 +2,10 @@ defmodule PantsWeb.JeanView do
   use PantsWeb, :view
   alias PantsWeb.JeanView
 
+  def render("index.json", %{jeans: jeans, version: "2"}) do
+    %{jeans: render_many(jeans, JeanView, "jean.json")}
+  end
+
   def render("index.json", %{jeans: jeans}) do
     %{data: render_many(jeans, JeanView, "jean.json")}
   end
diff --git a/test/pants_web/controllers/jean_controller_test.exs b/test/pants_web/controllers/jean_controller_test.exs
index 6bf9221..588e88b 100644
--- a/test/pants_web/controllers/jean_controller_test.exs
+++ b/test/pants_web/controllers/jean_controller_test.exs
@@ -24,6 +24,25 @@ defmodule PantsWeb.JeanControllerTest do
     end
   end
 
+  describe "index v2" do
+    test "lists all jeans", %{conn: conn} do
+      jean = fixture(:jean)
+
+      conn =
+        conn
+        |> put_req_header("content-type", "application/json; version=2")
+        |> get(jean_path(conn, :index))
+
+      response = %{
+        "jeans" => [
+          %{"id" => jean.id, "brand" => "some brand"}
+        ]
+      }
+
+      assert json_response(conn, 200) == response
+    end
+  end
+
   describe "create jean" do
     test "renders jean when data is valid", %{conn: conn} do
       conn = post(conn, jean_path(conn, :create), jean: @create_attrs)