changing models

Signed-off-by: man13 <man13@inf.ufpr.br>

app/models/learning_object.rb

@@ -4,8 +4,6 @@ class LearningObject < ActiveRecord::Base
   include Sociable
   include Stateful
 
-  has_attached_file :thumbnail, styles: {medium: "530x300", small: "250x140"}
-  validates_attachment_content_type :thumbnail, :content_type => ["image/jpg", "image/jpeg", "image/png", "image/gif"]
   has_and_belongs_to_many :topics
 
   has_many :collection_items, as: :collectionable

app/models/learning_object/attachment.rb

 class LearningObject::Attachment < ActiveRecord::Base
   belongs_to :learning_object
+
+  has_attached_file :thumbnail, styles: {medium: "530x300", small: "250x140"}
+  validates_attachment_content_type :thumbnail, :content_type => ["image/jpg", "image/jpeg", "image/png", "image/gif"]
 end