Yii2.0 uses Gii to generate code

$config = [ ... ]; if (YII_ENV_DEV) { $config['bootstrap'][] = 'gii'; $config['modules']['gii'] = 'yii\gii\Module'; }

defined('YII_ENV') or define('YII_ENV', 'dev');

'gii' => [ 'class' => 'yii\gii\Module', 'allowedIPs' => ['127.0.0.1', '::1', '192.168.0.*', '192.168.178.20'] // adjust this to your needs ],

http://hostname/index.php?r=gii