User restore session

action/action_asistencias.php

@@ -3,11 +3,7 @@ $ruta = "../";
 require_once "../class/c_login.php";
 
 // check if the session is started
-if (!isset($_SESSION['user']))
-    die(json_encode(['error' => 'No se ha iniciado sesión']));
-
-$user = unserialize($_SESSION['user']);
-
+$user = Login::get_user();
 extract($_POST);
 
 $initial_date = DateTime::createFromFormat('d/m/Y', $fecha_inicial);