Move `attributes` to the `AttributeSet` object.

activerecord/lib/active_record/attribute_methods.rb

@@ -271,9 +271,7 @@ module ActiveRecord
     #   person.attributes
     #   # => {"id"=>3, "created_at"=>Sun, 21 Oct 2012 04:53:04, "updated_at"=>Sun, 21 Oct 2012 04:53:04, "name"=>"Francesco", "age"=>22}
     def attributes
-      attribute_names.each_with_object({}) { |name, attrs|
-        attrs[name] = read_attribute(name)
-      }
+      @attributes.to_hash
     end
 
     # Returns an <tt>#inspect</tt>-like string for the value of the

activerecord/lib/active_record/attribute_set.rb

@@ -10,6 +10,11 @@ module ActiveRecord
       attributes.update(other.attributes)
     end
 
+    def to_hash
+      attributes.each_with_object({}) { |(k, v), h| h[k] = v.value }
+    end
+    alias_method :to_h, :to_hash
+
     def freeze
       @attributes.freeze
       super

activerecord/test/cases/attribute_set_test.rb

@@ -45,5 +45,13 @@ module ActiveRecord
       assert clone.frozen?
       assert_not attributes.frozen?
     end
+
+    test "to_hash returns a hash of the type cast values" do
+      builder = AttributeSet::Builder.new(foo: Type::Integer.new, bar: Type::Float.new)
+      attributes = builder.build_from_database(foo: '1.1', bar: '2.2')
+
+      assert_equal({ foo: 1, bar: 2.2 }, attributes.to_hash)
+      assert_equal({ foo: 1, bar: 2.2 }, attributes.to_h)
+    end
   end
 end