Use commit date for branches and tags

lib/api/branches.rb

@@ -125,6 +125,12 @@ module API
       delete ':id/repository/branches/:branch', requirements: BRANCH_ENDPOINT_REQUIREMENTS do
         authorize_push_project
 
+        branch = user_project.repository.find_branch(params[:branch])
+        not_found!('Branch') unless branch
+
+        commit = user_project.repository.commit(branch.dereferenced_target)
+
+        destroy_conditionally!(commit, last_update_field: :authored_date) do
           result = DeleteBranchService.new(user_project, current_user)
                     .execute(params[:branch])
 
@@ -132,6 +138,7 @@ module API
             render_api_error!(result[:message], result[:return_code])
           end
         end
+      end
 
       desc 'Delete all merged branches'
       delete ':id/repository/merged_branches' do

lib/api/tags.rb

@@ -65,6 +65,12 @@ module API
       delete ':id/repository/tags/:tag_name', requirements: TAG_ENDPOINT_REQUIREMENTS do
         authorize_push_project
 
+        tag = user_project.repository.find_tag(params[:tag_name])
+        not_found!('Tag') unless tag
+
+        commit = user_project.repository.commit(tag.dereferenced_target)
+
+        destroy_conditionally!(commit, last_update_field: :authored_date) do
           result = ::Tags::DestroyService.new(user_project, current_user)
                     .execute(params[:tag_name])
 
@@ -72,6 +78,7 @@ module API
             render_api_error!(result[:message], result[:return_code])
           end
         end
+      end
 
       desc 'Add a release note to a tag' do
         success Entities::Release

spec/requests/api/tags_spec.rb

@@ -394,7 +394,7 @@ describe API::Tags do
 
         it_behaves_like '404 response' do
           let(:request) { put api(route, current_user), description: new_description }
-          let(:message) { '404 Tag Not Found' }
+          let(:message) { 'Tag does not exist' }
         end
       end