framework/data/DataFilter.php
public function canGetProperty($name, $checkVars = true, $checkBehaviors = true)
    {
        if ($name === $this->filterAttributeName) {
            return true;
        }
        return parent::canGetProperty($name, $checkVars, $checkBehaviors);
    }
public function canGetProperty($name, $checkVars = true, $checkBehaviors = true)
    {
        if ($name === $this->filterAttributeName) {
            return true;
        }
        return parent::canGetProperty($name, $checkVars, $checkBehaviors);
    }
{@inheritdoc}