Add simple attribute implementation backed by ivars

1 files changed, 17 insertions, 0 deletions

diff --git a/activemodel/lib/active_model/attributes.rb b/activemodel/lib/active_model/attributes.rb
new file mode 100644
index 0000000000..4665525281
--- /dev/null
+++ b/activemodel/lib/active_model/attributes.rb
@@ -0,0 +1,17 @@
+require 'active_support/core_ext/object/instance_variables'
+
+module ActiveModel
+  module Attributes
+    def attributes
+      instance_values
+    end
+
+    def read_attribute(attr_name)
+      instance_variable_get(:"@#{attr_name}")
+    end
+
+    def write_attribute(attr_name, value)
+      instance_variable_set(:"@#{attr_name}", value)
+    end
+  end
+end