Add helper for rendering link to protected features

app/helpers/tab_helper.rb

@@ -89,6 +89,19 @@ module TabHelper
     end
   end
 
+  def link_to_protected_feature(url, *args, &block)
+    link_text   = capture(&block)
+    options     = args.extract_options!
+    feature_key = options.delete(:feature)
+    user        = options.delete(:user)
+
+    if @project.feature_available?(feature_key, user)
+      link_to(link_text, url, options)
+    else
+      link_to(link_text, '#', options)
+    end
+  end
+
   def current_path?(path)
     c, a, _ = path.split('#')
     current_controller?(c) && current_action?(a)

app/views/projects/commits/_head.html.haml

@@ -35,7 +35,6 @@
           = link_to charts_namespace_project_graph_path(@project.namespace, @project, current_ref) do
             #{ _('Charts') }
 
-        - if @project.feature_available?(:file_lock)
         = nav_link(controller: [:path_locks]) do
-            = link_to namespace_project_path_locks_path(@project.namespace, @project) do
+          = link_to_protected_feature namespace_project_path_locks_path(@project.namespace, @project), feature: :file_lock do
             Locked Files

app/views/projects/graphs/_head.html.haml

@@ -13,7 +13,6 @@
           = link_to 'Commits', commits_namespace_project_graph_path
         = nav_link(action: :languages) do
           = link_to 'Languages', languages_namespace_project_graph_path
-        - if @project.feature_available?(:builds, current_user)
         = nav_link(action: :ci) do
-            = link_to ci_namespace_project_graph_path do
+          = link_to_protected_feature ci_namespace_project_graph_path, feature: :builds, user: current_user do
             Continuous Integration

app/views/projects/pipelines/_head.html.haml

@@ -27,8 +27,7 @@
               %span
                 Environments
 
-        - if @project.feature_available?(:builds, current_user) && !@project.empty_repo?
         = nav_link(path: 'pipelines#charts') do
-            = link_to charts_namespace_project_pipelines_path(@project.namespace, @project), title: 'Charts', class: 'shortcuts-pipelines-charts' do
+          = link_to_protected_feature charts_namespace_project_pipelines_path(@project.namespace, @project), feature: :builds, user: current_user, title: 'Charts', class: 'shortcuts-pipelines-charts' do
             %span
               Charts

app/views/projects/settings/_head.html.haml

@@ -22,9 +22,8 @@
             = link_to namespace_project_settings_repository_path(@project.namespace, @project), title: 'Repository' do
               %span
                 Repository
-          - if @project.feature_available?(:builds, current_user)
           = nav_link(controller: :ci_cd) do
-              = link_to namespace_project_settings_ci_cd_path(@project.namespace, @project), title: 'Pipelines' do
+            = link_to_protected_feature namespace_project_settings_ci_cd_path(@project.namespace, @project), feature: :builds, user: current_user, title: 'Pipelines' do
               %span
                 Pipelines
           - if Gitlab.config.pages.enabled