Base progress

lib/qwaiter/supplier_base_serializer.rb

@@ -3,8 +3,8 @@ module Qwaiter::SupplierBaseSerializer
   include JSONAPI::Serializer
   included do
     class_attribute :related_link_for_attributes
-    attribute :created_at
-    attribute :updated_at
+    timestamp_attribute :created_at
+    timestamp_attribute :updated_at
   end
 
   def base_url
@@ -25,6 +25,7 @@ module Qwaiter::SupplierBaseSerializer
     super
   end
 
+
   def relationship_self_link(attribute_name)
   end
 
@@ -35,6 +36,13 @@ module Qwaiter::SupplierBaseSerializer
       end
     end
 
+    def timestamp_attribute(attr)
+      attribute attr do
+        return unless timestamp = object.public_send(attr)
+        timestamp.iso8601
+      end
+    end
+
     def related_link_for(*attributes)
       self.related_link_for_attributes = attributes
     end