Merge pull request #679 from Ahalogy/serializer-options

Serializer options

lib/active_model/array_serializer.rb

@@ -38,9 +38,9 @@ module ActiveModel
       serializer_class.new(item, scope: scope, key_format: key_format, only: @only, except: @except, polymorphic: @polymorphic, namespace: @namespace)
     end
 
-    def serializable_object
+    def serializable_object(options={})
       @object.map do |item|
-        serializer_for(item).serializable_object_with_notification
+        serializer_for(item).serializable_object_with_notification(options)
       end
     end
     alias_method :serializable_array, :serializable_object

lib/active_model/serializable.rb

@@ -9,18 +9,18 @@ module ActiveModel
     def as_json(options={})
       instrument('!serialize') do
         if root = options.fetch(:root, json_key)
-          hash = { root => serializable_object }
+          hash = { root => serializable_object(options) }
           hash.merge!(serializable_data)
           hash
         else
-          serializable_object
+          serializable_object(options)
         end
       end
     end
 
-    def serializable_object_with_notification
+    def serializable_object_with_notification(options={})
       instrument('!serialize') do
-        serializable_object
+        serializable_object(options)
       end
     end
 

lib/active_model/serializer.rb

@@ -273,7 +273,13 @@ end
       end]
     end
 
+    attr_writer :serialization_options
+    def serialization_options
+      @serialization_options || {}
+    end
+
     def serializable_object(options={})
+      self.serialization_options = options
       return @wrap_in_array ? [] : nil if @object.nil?
       hash = attributes
       hash.merge! associations