调用未定义的方法Symfony\Component\DomCrawler\Crawler::rewind()

Question

我使用Yii2 DynamicForms extension创建动态字段没有问题，但今天当我运行composer更新时，我收到了以下错误：

Call to undefined method Symfony\Component\DomCrawler\Crawler::rewind()

错误指向/vendor/wbraganca/yii2-dynamicform/DynamicFormWidget.php的第201行

private function removeItems($content)
{
    $document = new \DOMDocument('1.0', \Yii::$app->charset);
    $crawler = new Crawler();
    $crawler->addHTMLContent($content, \Yii::$app->charset);
    $root = $document->appendChild($document->createElement('_root'));
    $crawler->rewind(); // Error here
    $root->appendChild($document->importNode($crawler->current(), true));
    $domxpath = new \DOMXPath($document);
    $crawlerInverse = $domxpath->query(CssSelector::toXPath($this->widgetItem));

    foreach ($crawlerInverse as $elementToRemove) {
        $parent = $elementToRemove->parentNode;
        $parent->removeChild($elementToRemove);
    }

    $crawler->clear();
    $crawler->add($document);
    return $crawler->filter('body')->eq(0)->html();
}

此方法是否已从DomCrawler中删除？

如何解决这个问题？

Answer 1

另一种解决方案是将DomCrawler恢复到2.8版。

{
    "symfony/dom-crawler": "2.8",
    "symfony/css-selector": "2.8",
    "wbraganca/yii2-dynamicform": "2.0.1"
}

摘自：https://github.com/wbraganca/yii2-dynamicform/issues/108