Implement each_serializer

lib/active_model/array_serializer.rb

@@ -7,7 +7,8 @@ module ActiveModel
 
     def serializable_array
       @object.map do |item|
-        if serializer = Serializer.serializer_for(item)
+        serializer = @options[:each_serializer] || Serializer.serializer_for(item)
+        if serializer
           serializer.new(item).serializable_object(@options.merge(root: nil))
         else
           item.as_json

test/unit/active_model/array_serializer_test.rb

@@ -27,6 +27,17 @@ module ActiveModel
 
         assert_equal expected, serializer.serializable_array
       end
+
+      def test_array_serializers_each_serializer
+        array = [::Model.new({ name: 'Name 1', description: 'Description 1', comments: 'Comments 1' }),
+                 ::Model.new({ name: 'Name 2', description: 'Description 2', comments: 'Comments 2' })]
+        serializer = ArraySerializer.new(array, each_serializer: ProfileSerializer)
+
+        expected = [{'name' => 'Name 1', 'description' => 'Description 1'},
+                    {'name' => 'Name 2', 'description' => 'Description 2'}]
+
+        assert_equal expected, serializer.serializable_array
+      end
     end
   end
 end