Yii2 cors filters error that No 'Access-Control-Allow-Origin' header is present

Question

Following This question i have set my rest controller behaviour as

public function behaviors()
{
    $behaviors = parent::behaviors();

    $auth= $behaviors         


        

Answer 1

It is important to write $behaviors['access'] ie. AccessControl as a last parameter, for example:

public function behaviors()     {
    $behaviors = parent::behaviors(); 

    // remove authentication filter         
    unset($behaviors['authenticator']);   

    $behaviors['corsFilter'] = [     
        'class' => \yii\filters\Cors::class,
        'cors'  => [
                'Origin' => ['*'], 
                'Access-Control-Request-Method'    => ['POST', 'GET', 'PUT', 'PATCH', 'DELETE', 'HEAD', 'OPTIONS'], 
                'Access-Control-Allow-Headers' => ['Origin', 'X-Requested-With', 'Content-Type', 'accept', 'Authorization'], 
                'Access-Control-Request-Headers' => ['*'],    
                'Access-Control-Max-Age'           => 3600, // Cache (seconds) 
                // Allow the X-Pagination-Current-Page header to be exposed to the browser.             
                'Access-Control-Expose-Headers' => ['X-Pagination-Total-Count', 'X-Pagination-Page-Count', 'X-Pagination-Current-Page', 'X-Pagination-Per-Page'] 
        ] 
    ];           

    $behaviors['authenticator'] = [ ... whatever ... ];          

    $behaviors['access'] = [           
      'class' => AccessControl::className(),           
      'rules' => [   
                  [  
                    'allow' => true,   
                    'actions' => ['options'], // important for cors ie. pre-flight requests   
                  ], 
                ]   
    ];
  }