1 files changed, 33 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/before_type_cast.rb b/activerecord/lib/active_record/attribute_methods/before_type_cast.rb
new file mode 100644
index 0000000000..a4e144f233
--- /dev/null
+++ b/activerecord/lib/active_record/attribute_methods/before_type_cast.rb
@@ -0,0 +1,33 @@
+module ActiveRecord
+  module AttributeMethods
+    module BeforeTypeCast
+      extend ActiveSupport::Concern
+
+      included do
+        attribute_method_suffix "_before_type_cast"
+      end
+
+      def read_attribute_before_type_cast(attr_name)
+        @attributes[attr_name]
+      end
+
+      # Returns a hash of attributes before typecasting and deserialization.
+      def attributes_before_type_cast
+        self.attribute_names.inject({}) do |attrs, name|
+          attrs[name] = read_attribute_before_type_cast(name)
+          attrs
+        end
+      end
+
+      private
+        # Handle *_before_type_cast for method_missing.
+        def attribute_before_type_cast(attribute_name)
+          if attribute_name == 'id'
+            read_attribute_before_type_cast(self.class.primary_key)
+          else
+            read_attribute_before_type_cast(attribute_name)
+          end
+        end
+    end
+  end
+end