Question

我的问题
表单request / POST中这两行之间有什么区别？

$ article-＆gt; getComments（）as $ comment
$ form-＆gt; get（'Comments'） - ＆gt; getData（）as $ comment

背景

ENTITY ARTICLE

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

FORM REQUEST

$ 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
       }
    }
}

ARTICLETYPE 添加文章contenu并添加一组评论

Answer 1

在$form->bind($request)完成的所有工作中，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基础数据对象。因此，当您运行$form->getData()时，它会返回表单的默认值，并与请求中的值合并。

让我们来看看

// 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？

使用doctrine和symfony从$ form对象中检索POST

1 个答案: