fix(stats): nav bar profile logic when fallbacking on referer context without request

app/controllers/concerns/nav_bar_profile_concern.rb

@@ -16,6 +16,12 @@ module NavBarProfileConcern
 
     private
 
+    def nav_bar_user_or_guest
+      # when instanciating manually the controller (see below),
+      # we don't have request and current_user would fail
+      request && current_user ? :user : :guest
+    end
+
     # Shared controllers (search, errors, release notes…) don't have specific context
     # Simple attempt to try to re-use the profile from the previous page
     # so user does'not feel lost.

app/controllers/users/commencer_controller.rb

@@ -87,9 +87,7 @@ module Users
       retrieve_procedure
     end
 
-    def nav_bar_profile
-      current_user ? :user : :guest
-    end
+    def nav_bar_profile = nav_bar_user_or_guest
 
     def closing_details
       @procedure = Procedure.find_by(path: params[:path])

app/controllers/users/statistiques_controller.rb

@@ -2,6 +2,8 @@
 
 module Users
   class StatistiquesController < ApplicationController
+    def nav_bar_profile = nav_bar_user_or_guest
+
     def statistiques
       @procedure = procedure
       return procedure_not_found if @procedure.blank? || @procedure.brouillon?