Hide 'Create Build Lists of dependent projects' button if no projects

app/views/projects/build_lists/show.html.haml

@@ -225,7 +225,8 @@
       - if can_run_dependent_build_lists?(@build_list)
         = link_to t('projects.build_lists.dependent_projects.title'),
             dependent_projects_build_list_path(@build_list),
-            class: 'button'
+            class: 'button',
+            'ng-show' => 'build_list.dependent_projects_exists'
 
     %div{'ng-show' => "build_list.status == #{BuildList::BUILD_STARTED}"}
       = render 'shared/log', { build_started: true, get_log_path: log_build_list_path(@build_list) }

app/views/projects/build_lists/show.json.jbuilder

@@ -51,6 +51,7 @@ json.build_list do
       json.url file_store_results_url(result['sha1'], result['file_name'])
     end if @build_list.new_core? && @build_list.results.present?
 
+    dependent_projects_exists = false
     json.packages @build_list.packages do |package|
       json.(package, :id, :name, :fullname, :release, :version, :sha1, :epoch)
       json.url "#{APP_CONFIG['file_store_url']}/api/v1/file_stores/#{package.sha1}" if package.sha1
@@ -60,10 +61,13 @@ json.build_list do
         json.name project.name_with_owner
         json.dependent_packages packages
         json.new_url new_project_build_list_path(project)
+
+        dependent_projects_exists = true
       end if @build_list.save_to_platform.main?
 
     end if @build_list.packages.present?
 
+    json.dependent_projects_exists dependent_projects_exists
 
     json.item_groups do |group|
       @item_groups.each_with_index do |group, level|