set Current.application_name

app/controllers/application_controller.rb

@@ -31,6 +31,12 @@ class ApplicationController < ActionController::Base
     # TODO: remove this block when migration to new domain is done
     # headers['Host'] instead of request.host to keep the port (ex: localhost:3000)
     Current.host = request.headers['Host']
+
+    if Current.host.include?("gouv.fr")
+      Current.application_name = "demarches.gouv.fr"
+    else
+      Current.application_name = APPLICATION_NAME
+    end
   end
 
   def staging_authenticate

app/models/current.rb

@@ -1,3 +1,3 @@
 class Current < ActiveSupport::CurrentAttributes
-  attribute :user, :request_id, :browser, :host
+  attribute :user, :request_id, :browser, :host, :application_name
 end