Why is the validation rule not working?

Question

Yii

The following code fails validation

public function rules() {
    return[
      [['name','email'],'required'],
      ['email','email'],
      //['name','string','min'=>2,'tooShort'=>'Мало'],
      //['name','string','max'=>5,'tooLong'=>'Много'],
      ['name','string','length'=>[2,5]],
      ['name','myRule'],
      ['text','trim']
    ];
  }

  public function myRule($attr){
    if(!in_array($this->attributes,['hello','world'])){
      $this->addError($attr,'Не в массиве имен');
    }
  }

I enter hello in the name field. Writes what is not in the array of names

Answer 1

does not work because in the validation rule it is necessary to check not the entire array of attributes, but the passed attribute

public function myRule($attr){
    if(!in_array($this->$attr, ['hello', 'world'])){
        $this->addError($attr, 'Не в массиве имен');
    }
}