Laravel 5 Global Mutator可以转义所有的html字符？

class User extends Model
{
    protected $casts = [
        '*'
    ];

    public function setAttribute($key, $value)
    {
        $value = $this->escapeHtml($value);

        return parent::setAttribute($key, $value);
    }

    protected function escapeHtml($value)
    {
        if (is_string($value)) {
            return htmlspecialchars($value, ENT_QUOTES, 'UTF-8');
        }

        if (is_array($value)) {
            return array_map([$this, 'escapeHtml'], $value);
        }

        if (is_object($value) && method_exists($value, '__toString')) {
            return $this->escapeHtml((string)$value);
        }

        return $value;
    }
}