Structure updates

app/models/product.rb

@@ -9,7 +9,7 @@ class Product
   property :description
   property :visible, type: :boolean, default: true
   property :active, type: :boolean, default: true
-  property :position, type: Fixnum
+  property :position, type: Integer
 
   belongs_to :product_category
   #has_and_belongs_to_many :product_categories, storing_keys: false
@@ -39,8 +39,8 @@ class Product
 
   property :image_file_name
   property :image_content_type
-  property :image_file_size, :type => Fixnum
-  property :image_updated_at, :type => Time
+  property :image_file_size,  type: Integer
+  property :image_updated_at, type: Time
   has_attached_file :image,
     url: '/system/product/:id/images/:style.:extension',
     styles: {medium: '512x512>', thumb: '128x128>', large: '896x896>', small: '320x320>'},