From c3de52d7ed470433e9ecd44226518797c0a9f389 Mon Sep 17 00:00:00 2001
From: Jose and Yehuda <wycats@gmail.com>
Date: Mon, 26 Sep 2011 19:29:37 -0400
Subject: Initial implementation of ActiveModel::Serializer

---
 activemodel/lib/active_model.rb            |  1 +
 activemodel/lib/active_model/serializer.rb | 46 ++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 activemodel/lib/active_model/serializer.rb

(limited to 'activemodel/lib')

diff --git a/activemodel/lib/active_model.rb b/activemodel/lib/active_model.rb
index d0e2a6f39c..28765b00bb 100644
--- a/activemodel/lib/active_model.rb
+++ b/activemodel/lib/active_model.rb
@@ -43,6 +43,7 @@ module ActiveModel
   autoload :Observer, 'active_model/observing'
   autoload :Observing
   autoload :SecurePassword
+  autoload :Serializer
   autoload :Serialization
   autoload :TestCase
   autoload :Translation
diff --git a/activemodel/lib/active_model/serializer.rb b/activemodel/lib/active_model/serializer.rb
new file mode 100644
index 0000000000..2eca3ebc5e
--- /dev/null
+++ b/activemodel/lib/active_model/serializer.rb
@@ -0,0 +1,46 @@
+require "active_support/core_ext/class/attribute"
+require "active_support/core_ext/string/inflections"
+require "set"
+
+module ActiveModel
+  class Serializer
+    class_attribute :_attributes
+    self._attributes = Set.new
+
+    def self.attributes(*attrs)
+      self._attributes += attrs
+    end
+
+    attr_reader :object, :scope
+
+    def self.inherited(klass)
+      name = klass.name.demodulize.underscore.sub(/_serializer$/, '')
+
+      klass.class_eval do
+        alias_method name.to_sym, :object
+      end
+    end
+
+    def initialize(object, scope)
+      @object, @scope = object, scope
+    end
+
+    def as_json(*)
+      serializable_hash
+    end
+
+    def serializable_hash(*)
+      attributes
+    end
+
+    def attributes
+      hash = {}
+
+      _attributes.each do |name|
+        hash[name] = @object.read_attribute_for_serialization(name)
+      end
+
+      hash
+    end
+  end
+end
-- 
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