Add useClass property into Application in migrations.php

Author: thecodeholic

migrations.php

@@ -12,6 +12,7 @@
 $dotenv->load();
 
 $config = [
+    'userClass' => \app\models\User::class,
     'db' => [
         'dsn' => $_ENV['DB_DSN'],
         'user' => $_ENV['DB_USER'],