使用学说和符号从$form对象中检索 POST - Retrieving POST from $form object with doctrine and symfony

Retrieving POST from $form object with doctrine and symfony

本文关键字：对象 form 检索 POST 符号 | 更新日期: 2023-09-27

我的问题
表单请求/POST 中的这两行之间有什么区别？

$article->getComments（）作为$comment
$form->get（'Comments'）->getData（） as $comment

上下文

实体文章

 class Article
 {
     private Comments
     public function __construct() {
       $this->Comments = new'Doctrine'Common'Collections'ArrayCollection()
     }
     public function getComments() 
     {
           return $this->comments
     }

表格请求

$article是一个带有一些注释的对象。

$form = $this->createForm(new ArticleType(), $article);
$request = $this->getRequest();
if($request->getMethode() == 'POST'){
    $form->bind($request);
    if($form->isValid()) {
       $liste_comments = array();
       $liste_comments_bis = array();
       foreach($article->getComments() as $comment){
           $liste_comments[] = $comment
       }
       foreach($form->get('comments')->getData() as $comment_bis){
           $liste_comments_bis[] = $comment_bis
       }
    }
}

文章类型添加文章内容并添加评论集合

在$form->bind($request)所做的所有工作深处，Symfony的表单系统从HTTP请求中读取所有数据，并将其分配给表单的底层数据对象。因此，当您运行$form->getData()时，它会返回与请求中找到的值合并的表单默认值。

让我们走一遍

// Create a form object based on the ArticleType with default data of $article
$form = $this->createForm(new ArticleType(), $article);
// Walk over data in the requests and bind values to properties of the
// underlying data. Note: they are NOT bound to $article - $article just
// provides the defaults/initial state
$form->bind($request);
// Get the Article entity with bound form data
$updatedArticle = $form->getData();
// This loops over the default comments
foreach ($article->getComments() as $comment) {}
// This loops over the submitted comments
foreach ($updatedArticle ->getComments() as $comment) {}
// For the purpose of my example, these two lines return the same thing
$form->get('comments')->getData();
$form->getData()->getComments();

这有帮助吗？