How in yii to execute findAll in a model inherited from CActiveRecord?

Question

Yii

Good afternoon.
Inherited ActiveRecord from CActiveRecord and in turn all models from ActiveRecord , so that all models have typical project-specific methods, for example, created such a method in ActiveRecord :

static function getAll(){
        $criteria = new CDbCriteria();
        $criteria->condition = 'EXIST = 1';
        return self::findAll($criteria);
    }

I call it from the controller:

public function actionIndex()
  {
        $model = Project::getAll();
        $this->render('index',array(
            'model'=>$model
        ));
}

I'm getting an error:
Fatal error: Using $this when not in object context in X:\home\ferrum\www\framework\db\ar\CActiveRecord.php on line 1469
Please help me find the connection.
...
It turned out when I made the method public, but I have to create an object in the controller, but I would like to handle it statically, are there any options?

Answer 1

replace
with
self::model()->findAll($criteria);