Extract Serializer building

lib/hypermodel/resource.rb

@@ -1,4 +1,4 @@
-require 'hypermodel/serializers/mongoid'
+require 'hypermodel/serializer'
 
 module Hypermodel
   # Public: Responsible for building the response in JSON-HAL format. It is
@@ -18,7 +18,7 @@ class Resource
     #
     # Returns a flattened Array with the hierarchy of records.
     TraverseUpwards = lambda do |record|
-      serializer = Serializers::Mongoid.new(record)
+      serializer = Serializer.build(record)
 
       parent_name, parent_resource = (
         serializer.embedding_resources.first || serializer.resources.first
@@ -43,7 +43,7 @@ class Resource
     # choose the corresponding serializer.
     def initialize(record, controller)
       @record     = record
-      @serializer = Serializers::Mongoid.new(record)
+      @serializer = Serializer.build(record)
       @controller = controller
     end
 

lib/hypermodel/serializer.rb

@@ -0,0 +1,13 @@
+require 'hypermodel/serializers/mongoid'
+
+module Hypermodel
+  # Private: Responsible for instantiating the correct serializer for a given
+  # record. Right now only works with Mongoid.
+  class Serializer
+
+    # Public: Returns a matching Serializer inspecting the ORM of the record.
+    def self.build(record)
+      Serializers::Mongoid.new(record)
+    end
+  end
+end