improved gii input filter, fixes #3689

extensions/gii/generators/model/Generator.php

@@ -55,6 +55,8 @@ class Generator extends \yii\gii\Generator
     {
         return array_merge(parent::rules(), [
             [['db', 'ns', 'tableName', 'modelClass', 'baseClass'], 'filter', 'filter' => 'trim'],
+            [['ns'], 'filter', 'filter' => function($value) { return trim($value, '\\'); }],
+
             [['db', 'ns', 'tableName', 'baseClass'], 'required'],
             [['db', 'modelClass'], 'match', 'pattern' => '/^\w+$/', 'message' => 'Only word characters are allowed.'],
             [['ns', 'baseClass'], 'match', 'pattern' => '/^[\w\\\\]+$/', 'message' => 'Only word characters and backslashes are allowed.'],