Add URL to serializers (closes #61)

Thanks so much to @vanstee for the initial
implementation!

test/serialization_test.rb

@@ -54,6 +54,18 @@ class RenderJsonTest < ActionController::TestCase
     end
   end
 
+  class HypermediaSerializable
+    def active_model_serializer
+      HypermediaSerializer
+    end
+  end
+
+  class HypermediaSerializer < ActiveModel::Serializer
+    def as_json(*)
+      { :link => hypermedia_url }
+    end
+  end
+
   class TestController < ActionController::Base
     protect_from_forgery
 
@@ -124,6 +136,10 @@ class RenderJsonTest < ActionController::TestCase
       render :json => [], :serializer => CustomSerializer
     end
 
+    def render_json_with_links
+      render :json => HypermediaSerializable.new
+    end
+
   private
     def default_serializer_options
       if params[:check_defaults]
@@ -229,4 +245,9 @@ class RenderJsonTest < ActionController::TestCase
     get :render_json_with_custom_serializer
     assert_match '{"hello":true}', @response.body
   end
+
+  def test_render_json_with_links
+    get :render_json_with_links
+    assert_match '{"link":"http://www.nextangle.com/hypermedia"}', @response.body
+  end
 end

test/serializer_test.rb

@@ -132,6 +132,12 @@ class SerializerTest < ActiveModel::TestCase
     }, hash)
   end
 
+  def test_serializer_receives_url_options
+    user = User.new
+    user_serializer = UserSerializer.new(user, :url_options => { :host => "test.local" })
+    assert_equal({ :host => "test.local" }, user_serializer.url_options)
+  end
+
   def test_pretty_accessors
     user = User.new
     user.superuser = true

test/test_helper.rb

@@ -20,11 +20,13 @@ require 'rails'
 module TestHelper
   Routes = ActionDispatch::Routing::RouteSet.new
   Routes.draw do
+    resource :hypermedia
     match ':controller(/:action(/:id))'
     match ':controller(/:action)'
   end
 
   ActionController::Base.send :include, Routes.url_helpers
+  ActiveModel::Serializer.send :include, Routes.url_helpers
 end
 
 ActiveSupport::TestCase.class_eval do