Implement SerializerSupport class

lib/active_model/serializer_support.rb

@@ -0,0 +1,11 @@
+require 'active_support/core_ext/string/inflections'
+
+module ActiveModel
+  module SerializerSupport
+    def active_model_serializer
+      "#{self.class.name}Serializer".safe_constantize
+    end
+
+    alias read_attribute_for_serialization send
+  end
+end

test/unit/active_model/serializer_support_test.rb

@@ -0,0 +1,19 @@
+require 'newbase/test_helper'
+require 'newbase/active_model/serializer_support'
+
+module ActiveModel
+  module SerializerSupport
+    class Test < ActiveModel::TestCase
+      class Model
+        include ActiveModel::SerializerSupport
+      end
+
+      class ModelSerializer < ActiveModel::Serializer
+      end
+
+      def test_active_model_returns_its_serializer
+        assert_equal ModelSerializer, Model.new.active_model_serializer
+      end
+    end
+  end
+end