App\Source\ModelFieldBuilder\StringField::__toString PHP Метод

    public function __toString()
    {
        if (!$this->visible || $this->name == 'default') {
            return '';
        }
        $str = sprintf('<input type="%s" name="%s" #>', $this->type, $this->name);
        if ($this->value !== null) {
            $str = str_replace("#", "# value=\"" . $this->value . "\"", $str);
        }
        if ($this->value === null && $this->default !== null) {
            $str = str_replace("#", "# value=\"" . $this->default . "\"", $str);
        }
        if ($this->placeholder) {
            $str = str_replace("#", "# placeholder=\"" . $this->placeholder . "\"", $str);
        }
        return $this->toString($str);
    }