creating bookmarks collection for each user

app/models/bookmarks.rb

+class Bookmarks < Collection
+
+  def name
+    'Bookmarks'
+  end
+
+  def name=(name)
+    raise 'Bookmarks can`t change the name.'
+  end
+
+end

app/repositories/orient_db/base.rb

@@ -50,12 +50,16 @@ class OrientDb::Base
     hash = {}
     hash["@class"] = odb_class
     object.instance_variables.each do |var|
-      var_name = var.to_s.gsub(/\A@/, "")
+      var_name = sanitize_orientdb_vars(var)
       hash[var_name] = object.instance_variable_get(var)
     end
     hash
   end
 
+  def sanitize_orientdb_vars(var)
+    var.to_s.gsub(/\A@/, "")
+  end
+
   def build_object(args={})
     raise NoMethodError, "You must implement this method"
   end

app/repositories/orient_db/collection_repository.rb

@@ -9,6 +9,14 @@ module OrientDb
       )
     end
 
+    def create_bookmarks_collection(user)
+      bookmarks = Bookmarks.new(owner: user)
+
+      if !has_bookmarks?(user)
+        create bookmarks
+      end
+    end
+
     private
 
     def odb_class