Show banner after successfully deletion of version

app/controllers/versions_controller.rb

@@ -107,6 +107,7 @@ class VersionsController < ApplicationController
       flash[:error] << archived_project_mesage if archived_projects.any?
     end
 
+    flash[:notice] = I18n.t :notice_successful_delete
     redirect_to project_settings_versions_path(@project), status: :see_other
   end
 

spec/controllers/versions_controller_spec.rb

@@ -356,6 +356,7 @@ RSpec.describe VersionsController do
     end
 
     it "redirects to projects versions and the version is deleted" do
+      expect(flash[:notice]).to eq(I18n.t(:notice_successful_delete))
       expect(response).to redirect_to(project_settings_versions_path(project))
       expect { Version.find(@deleted) }.to raise_error ActiveRecord::RecordNotFound
     end