refactoring models to concerns

app/models/collection.rb

 class Collection < ActiveRecord::Base
+  include Reviewable
+  include Sociable
+  include Followable
+
   has_many :collection_items
   has_many :collection_items, as: :collectionable
   has_many :collections, through: :collection_items, source: :collectionable, source_type: 'Collection'
   has_many :learning_objects, through: :collection_items, source: :collectionable, source_type: 'LearningObject'
 
   belongs_to :owner, polymorphic: true
-  has_many :reviews, as: :reviewable
-
-  has_many :views, as: :viewable
-  has_many :downloads, as: :downloadable
-  has_many :likes, as: :likeable
-  has_many :shares, as: :shareable
-
-  has_many :follows, as: :followable
 
   def owner?(candidate)
     owner == candidate

app/models/concerns/followable.rb

+module Followable
+  extend ActiveSupport::Concern
+
+  included do
+    has_many :follows, as: :followable
+  end
+
+end
\ No newline at end of file

app/models/concerns/reviewable.rb

+module Reviewable
+  extend ActiveSupport::Concern
+
+  included do
+    has_many :reviews, as: :reviewable
+  end
+
+end
\ No newline at end of file

app/models/concerns/sociable.rb

+module Sociable
+  extend ActiveSupport::Concern
+
+  included do
+    has_many :views, as: :viewable
+    has_many :downloads, as: :downloadable
+    has_many :likes, as: :likeable
+    has_many :shares, as: :shareable
+  end
+
+end
\ No newline at end of file

app/models/learning_object.rb

 class LearningObject < ActiveRecord::Base
   include Metadatable
+  include Reviewable
+  include Sociable
 
   has_and_belongs_to_many :topics
 
@@ -7,12 +9,6 @@ class LearningObject < ActiveRecord::Base
   has_many :collections, through: :collection_items
 
   has_many :complaints
-  has_many :reviews, as: :reviewable
-
-  has_many :views, as: :viewable
-  has_many :downloads, as: :downloadable
-  has_many :likes, as: :likeable
-  has_many :shares, as: :shareable
 
   belongs_to :publisher, polymorphic: true
 

app/models/user.rb

 class User < ActiveRecord::Base
   include RepositoriesProxy
+  include Followable
 
   # Include default devise modules. Others available are:
   # :confirmable, :lockable, :timeoutable and :omniauthable
@@ -18,29 +19,13 @@ class User < ActiveRecord::Base
   has_many :downloads
   has_many :likes
   has_many :shares
-
   has_many :follows
-  has_many :follows, as: :followable
 
   after_create :default_role
 
   has_attached_file :avatar, styles: {medium: "300x300>", thumb: "60x60>"}, default_url: lambda { |image| ActionController::Base.helpers.asset_path('user-anon.png') }
   validates_attachment_content_type :avatar, content_type: /\Aimage\/.*\Z/
 
-  # def collections
-  #   #public_collections = collection_repository.all(Collections::UserPublicContext.new(self))
-  #  # private_collections = collection_repository.all(Collections::UserPrivateContext.new(self))
-  #   #@collections = public_collections + private_collections
-  # end
-  #
-  # def bookmarks
-  #   collection_repository.bookmarks self
-  # end
-  #
-  # def learning_objects
-  #   learning_object_repository.all self
-  # end
-
   def is_admin?
     roles.each do |role|
       return true if role.name == "admin"