Extract method to redirect keeping query params

app/controllers/admin/proposal_notifications_controller.rb

@@ -12,14 +12,14 @@ class Admin::ProposalNotificationsController < Admin::BaseController
 
   def confirm_hide
     @proposal_notification.confirm_hide
-    redirect_to request.query_parameters.merge(action: :index)
+    redirect_with_query_params_to(action: :index)
   end
 
   def restore
     @proposal_notification.restore
     @proposal_notification.ignore_flag
     Activity.log(current_user, :restore, @proposal_notification)
-    redirect_to request.query_parameters.merge(action: :index)
+    redirect_with_query_params_to(action: :index)
   end
 
   private