From b6f9c5ee4331654fba4d8fb1254052e251eca7eb Mon Sep 17 00:00:00 2001
From: Santiago Pastorino <santiago@wyeworks.com>
Date: Tue, 2 Jul 2013 00:13:26 -0700
Subject: [PATCH] Implement Serializer's scope

---
 lib/active_model/serializer.rb |  3 ++-
 test/serializer/scope_test.rb  | 35 ++++++++++++++++++++++++++++++++++
 2 files changed, 37 insertions(+), 1 deletion(-)
 create mode 100644 test/serializer/scope_test.rb

diff --git a/lib/active_model/serializer.rb b/lib/active_model/serializer.rb
index 615c9704..d148860d 100644
--- a/lib/active_model/serializer.rb
+++ b/lib/active_model/serializer.rb
@@ -31,8 +31,9 @@ module ActiveModel
       @object = object
       @root   = options[:root] || self.class._root
       @root   = self.class.root_name if @root == true
+      @scope  = options[:scope]
     end
-    attr_accessor :object, :root
+    attr_accessor :object, :root, :scope
 
     alias read_attribute_for_serialization send
 
diff --git a/test/serializer/scope_test.rb b/test/serializer/scope_test.rb
new file mode 100644
index 00000000..95e16ff8
--- /dev/null
+++ b/test/serializer/scope_test.rb
@@ -0,0 +1,35 @@
+require 'newbase/test_helper'
+require 'newbase/active_model/serializer'
+
+module SerializerTest
+  module Scope
+    class Model
+      def initialize(hash={})
+        @attributes = hash
+      end
+
+      def read_attribute_for_serialization(name)
+        @attributes[name]
+      end
+    end
+
+    class ModelSerializer < ActiveModel::Serializer
+    end
+
+    class Test < ActiveModel::TestCase
+      def setup
+        @serializer = ModelSerializer.new(nil, scope: current_user)
+      end
+
+      def test_scope
+        assert_equal('user', @serializer.scope)
+      end
+
+      private
+
+      def current_user
+        'user'
+      end
+    end
+  end
+end