Change project list cache key to use route.cache_key instead of namespace

app/helpers/projects_helper.rb

@@ -158,8 +158,7 @@ module ProjectsHelper
 
   def project_list_cache_key(project)
     key = [
-      'parent/' + project.namespace.parent_full_path,
-      project.namespace.cache_key,
+      project.route.cache_key,
       project.cache_key,
       controller.controller_name,
       controller.action_name,

app/models/namespace.rb

@@ -224,10 +224,6 @@ class Namespace < ActiveRecord::Base
     parent.present?
   end
 
-  def parent_full_path
-    full_path.split('/')[0...-1].join('/')
-  end
-
   private
 
   def repository_storage_paths

app/models/route.rb

@@ -35,7 +35,7 @@ class Route < ActiveRecord::Base
         old_path = route.path
 
         # Callbacks must be run manually
-        route.update_columns(attributes)
+        route.update_columns(attributes.merge(updated_at: Time.now))
 
         # We are not calling route.delete_conflicting_redirects here, in hopes
         # of avoiding deadlocks. The parent (self, in this method) already

changelogs/unreleased/dz-project-list-cache-key.yml

 ---
-title: Add parent full path to project list cache key
+title: Use route.cache_key for project list cache key
 merge_request: 11325
 author:

spec/helpers/projects_helper_spec.rb

@@ -66,14 +66,8 @@ describe ProjectsHelper do
   describe "#project_list_cache_key", redis: true do
     let(:project) { create(:project) }
 
-    it "includes the namespace" do
-      expect(helper.project_list_cache_key(project)).to include(project.namespace.cache_key)
-    end
-
-    it "includes the parent namespace in case of subgroup" do
-      project = create(:project, group: create(:group, :nested))
-
-      expect(helper.project_list_cache_key(project)).to include("parent/#{project.namespace.parent.path}")
+    it "includes the route" do
+      expect(helper.project_list_cache_key(project)).to include(project.route.cache_key)
     end
 
     it "includes the project" do

spec/models/namespace_spec.rb

@@ -332,10 +332,4 @@ describe Namespace, models: true do
 
     it { expect(group.all_projects.to_a).to eq([project2, project1]) }
   end
-
-  describe '#parent_full_path' do
-    let(:namespace) { create(:group, :nested) }
-
-    it { expect(namespace.parent_full_path).to eq(namespace.parent.path) }
-  end
 end