YII. Why is the validator not working?

Question

Yii

There is a form for uploading files, described in the model, here are the validation rules:

public function rules()
  {
    // NOTE: you should only define rules for those attributes that
    // will receive user inputs.
    return array(
      array('folder_id, file_name, file_txt', 'required'),
      array('folder_id', 'numerical', 'integerOnly'=>true),
      array('file_name', 'length', 'max'=>128),
                        
               array('file_txt', 'file',
      'allowEmpty' => false,
               'types'=>'txt',
      'maxSize'=>1024 * 1024, // 1 MB
      'tooLarge'=>'File is too large!',
                        
      ),
                    
      // The following rule is used by search().
      // @todo Please remove those attributes that should not be searched.
      array('file_id, folder_id, file_name', 'safe', 'on'=>'search'),
    );
  }

If you try to upload the wrong type of file, then the validator fires, but if you do not specify a file to upload, then just a blank page is displayed without errors. If I add file_txt to the first rule in required, the situation is the same. What could be the problem?
It doesn't seem to be an error..

Answer 1

the file_txt field must be assigned in the controller yiiframework.ru/doc/cookbook/ru/form.file.upload $model->image=CUploadedFile::getInstance($model,'image');