Improve code design

app/controllers/projects/container_registry_controller.rb

@@ -8,10 +8,12 @@ class Projects::ContainerRegistryController < Projects::ApplicationController
   end
 
   def destroy
+    url = namespace_project_container_registry_index_path(project.namespace, project)
+
     if tag.delete
-      redirect_to namespace_project_container_registry_index_path(project.namespace, project)
+      redirect_to url
     else
-      redirect_to namespace_project_container_registry_index_path(project.namespace, project), alert: 'Failed to remove tag'
+      redirect_to url, alert: 'Failed to remove tag'
     end
   end
 

app/models/project.rb

@@ -331,6 +331,8 @@ class Project < ActiveRecord::Base
   end
 
   def container_registry_repository
+    return unless Gitlab.config.registry.enabled
+
     @container_registry_repository ||= begin
       token = Auth::ContainerRegistryAuthenticationService.full_access_token(path_with_namespace)
       url = Gitlab.config.registry.api_url
@@ -347,10 +349,10 @@ class Project < ActiveRecord::Base
   end
 
   def has_container_registry_tags?
-    if Gitlab.config.registry.enabled
+    return unless container_registry_repository
+
     container_registry_repository.tags.any?
   end
-  end
 
   def commit(id = 'HEAD')
     repository.commit(id)