roles names

app/controllers/server/application_controller.rb

 class Server::ApplicationController < ApplicationController
   layout 'server/layouts/application'
 
-  before_action :authenticate_user!, :ensure_user_if_superadmin
+  before_action :authenticate_user!, :ensure_user_if_server_admin
 
   protected
 
@@ -9,7 +9,7 @@ class Server::ApplicationController < ApplicationController
     add_breadcrumb 'Tableau de bord', :server_root_path
   end
 
-  def ensure_user_if_superadmin
-    raise CanCan::AccessDenied unless current_user.superadmin?
+  def ensure_user_if_server_admin
+    raise CanCan::AccessDenied unless current_user.server_admin?
   end
 end

app/models/ability.rb

@@ -45,7 +45,7 @@ class Ability
     can :manage, User, university_id: @user.university_id, role: @user.managed_roles
   end
 
-  def superadmin
+  def server_admin
     can :manage, :all
   end
 end

app/models/user/with_authentication.rb

@@ -74,7 +74,7 @@ module User::WithAuthentication
 
     def set_default_role
       if User.all.empty?
-        role = :superadmin
+        role = :server_admin
       elsif university.users.empty?
         role = :admin
       else