php - Laravel protected attributes and Mutators -

i have problem laravel , protected $attributes , mutators.

i have user ranking points. want add user model attribution ranking position.

in user model have public function this:

public function getrankpositionattribute(){     $userpoints= ranking::where('user_id','=',$this->id)->first();     $userposition = ranking::where('points','>',$userpoints->points)->count()+1;     return $userposition;     } 

i set:

 protected $attributes = array('rankposition'=''); 

but it's not working (i don't see value rankposition in attributes). strange thing when add (for example) value this:

protected $attributes =array('test'=>'yes');  

laravel don't see test...

but when add this:

protected $appends = array('rankposition'); 

and in controller find user , response json in json response see value rankposition correct value... :(

what im doing wrong? why "my laravel" skips protected $attributes?

please me.

this because if provide protected $attributes in class laravel doesn't override when source of attributes table . here source of $attributes database column.

but when this:

$user = new user; 

then see test attribute.

so dynamically adding attributes should use appends property on model.