refactor reify method

lib/paper_trail/reifier.rb

@@ -75,19 +75,7 @@ def reify(version, options)
 
         model.send "#{model.class.version_association_name}=", version
 
-        unless options[:has_one] == false
-          reify_has_ones version.transaction_id, model, options
-        end
-
-        unless options[:belongs_to] == false
-          reify_belongs_tos version.transaction_id, model, options
-        end
-
-        unless options[:has_many] == false
-          reify_has_manys version.transaction_id, model, options
-        end
-
-        model
+        reify_assoications version, model, options
       end
 
       private
@@ -131,6 +119,16 @@ def prepare_array_for_has_many(array, options, versions)
         nil
       end
 
+      def reify_assoications version, model, options
+        reify_has_ones version.transaction_id, model, options if options[:has_one]
+
+        reify_belongs_tos version.transaction_id, model, options if options[:belongs_to]
+
+        reify_has_manys version.transaction_id, model, options if options[:has_many]
+
+        model
+      end
+
       # Restore the `model`'s has_one associations as they were when this
       # version was superseded by the next (because that's what the user was
       # looking at when they made the change).