Changed external wiki query method to prevent attribute caching

app/helpers/projects_helper.rb

@@ -328,7 +328,7 @@ module ProjectsHelper
   def external_nav_tabs(project)
     [].tap do |tabs|
       tabs << :external_issue_tracker if project.external_issue_tracker
-      tabs << :external_wiki if project.has_external_wiki?
+      tabs << :external_wiki if project.external_wiki
     end
   end

changelogs/unreleased/fj-regression-external-wiki-url.yml

+---
+title: Changed external wiki query method to prevent attribute caching
+merge_request: 24907
+author:
+type: fixed

spec/helpers/projects_helper_spec.rb

@@ -372,21 +372,16 @@ describe ProjectsHelper do
     end
     context 'when project has external wiki' do
-      before do
-        allow(project).to receive(:has_external_wiki?).and_return(true)
-      end
-
       it 'includes external wiki tab' do
+        project.create_external_wiki_service(active: true, properties: { 'external_wiki_url' => 'https://gitlab.com' })
+
         is_expected.to include(:external_wiki)
       end
     end
     context 'when project does not have external wiki' do
-      before do
-        allow(project).to receive(:has_external_wiki?).and_return(false)
-      end
-
       it 'does not include external wiki tab' do
+        expect(project.external_wiki).to be_nil
         is_expected.not_to include(:external_wiki)
       end
     end