Do not rely on rails env to detect staging

app/helpers/application_helper.rb

@@ -50,6 +50,10 @@ module ApplicationHelper
       current_administrateur&.email
   end
 
+  def staging?
+    ENV['APP_NAME'] == 'tps_dev'
+  end
+
   def root_path_for_profile(nav_bar_profile)
     case nav_bar_profile
     when :gestionnaire

app/views/layouts/application.html.haml

@@ -23,7 +23,7 @@
   %body
     = render partial: 'layouts/support_navigator_banner'
     = render partial: 'layouts/pre_maintenance'
-    - if Rails.env == 'staging'
+    - if staging?
       #beta
         Env Test
 

app/views/layouts/new_application.html.haml

@@ -29,7 +29,7 @@
     .page-wrapper
       = render partial: "layouts/support_navigator_banner"
       = render partial: 'layouts/pre_maintenance'
-      - if Rails.env == "staging"
+      - if staging?
         #beta
           Env Test