[英]Symfony Form: OneToMany and CollectionType Field
我被困於用Symfony 3構建表單。
我定義了一個實體“新聞”,其中包含一個屬性“ newsArticle”,該實體與實體“ NewsArticle”具有一個一對多關系,其中包含其屬性“標題”,“副標題”和“正文”的翻譯。 目的是提供一種表單,該表單一方面保留“新聞”屬性的字段,另一方面保留用於為默認語言創建“新聞文章”條目的表單。
實體新聞(節選):
/**
* @ORM\Entity
* @ORM\Table(name="news")
*/
class News {
/**
* @ORM\Column(type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @ORM\OneToMany(targetEntity="NewsArticle", mappedBy="news", cascade={"persist", "remove"})
*/
private $newsArticle;
/**
* Constructor
*/
public function __construct()
{
$this->newsArticle = new \Doctrine\Common\Collections\ArrayCollection();
}
}
實體新聞文章(節選):
/**
* @ORM\Entity
* @ORM\Table(name="news_article")
*/
class NewsArticle {
/**
* @ORM\Column(type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @ORM\ManyToOne(targetEntity="News")
* @ORM\JoinColumn(name="news_id", referencedColumnName="id")
*/
private $news;
/**
* @ORM\Column(type="string", length=150, unique=false, nullable=false)
* @Assert\NotBlank()
*/
private $headline;
/**
* @ORM\Column(type="string", length=150, nullable=true)
*/
private $subheadline;
/**
* @ORM\Column(type="string", length=65536, nullable=false)
* @Assert\NotBlank()
*/
private $bodytext;
/**
* @ORM\ManyToOne(targetEntity="Language")
* @ORM\JoinColumn(name="language_id", referencedColumnName="id")
*/
private $languageId;
}
控制器(節選):
public function addAction(Request $request) {
$lang = $this->getDoctrine()
->getRepository('Bundle:Language')
->findOneBy(array('deleted' => 0, 'fallback' => 1));
$news = new News();
//$news->newsArticle->setLanguageId($lang);
$form = $this->createForm(NewsType::class, $news);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
$em = $this->getDoctrine()->getManager();
$em->persist($news);
$em->flush();
}
return $this->render('Bundle:News:add.html.twig', array(
'form' => $form->createView(),
'news' => $news,
));
}
TWIG模板(節選):
{{ form_start(form) }}
<div class="form-group">
{{ form_label(form.headline) }}
<div class="col-sm-8 col-md-6">
{{ form_errors(form.headline) }}
{{ form_widget(form.headline) }}
</div>
</div>
<div class="form-group">
{{ form_label(form.subheadline) }}
<div class="col-sm-8 col-md-6">
{{ form_errors(form.subheadline) }}
{{ form_widget(form.subheadline) }}
</div>
</div>
<div class="form-group">
{{ form_label(form.bodytext) }}
<div class="col-sm-8 col-md-6">
{{ form_errors(form.bodytext) }}
{{ form_widget(form.bodytext) }}
</div>
</div>
{{ form_end(form) }}
新聞類型(節選):
class NewsType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options) {
$builder
->add('newsArticle', CollectionType::class, array(
'entry_type' => NewsArticleType::class,
'allow_add' => true,
'allow_delete' => true,
))
}
public function configureOptions(OptionsResolver $resolver) {
$resolver->setDefaults(array(
'data_class' => 'Bundle\Entity\News',
));
}
}
NewsArticleType(節選):
class NewsArticleType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options) {
$builder
->add('headline', TextType::class, array(
'required' => false,
))
->add('subheadline', TextType::class, array(
'required' => false,
))
->add('bodytext', CKEditorType::class, array(
'required' => false,
))
;
}
public function configureOptions(OptionsResolver $resolver) {
$resolver->setDefaults(array(
'data_class' => 'Bundle\Entity\NewsArticle',
));
}
}
不幸的是,我收到一條錯誤消息...
屬性“ headline”或方法“ headline()”,“ getheadline()” /“ isheadline()”或“ __call()”都不存在,並且在類“ Symfony \\ Component \\ Form \\ FormView”中沒有公共訪問權限在第27行的Bundle:_Partials:Form / news.html.twig中
...而且不知道如何訪問相關實體的屬性? 有什么提示嗎?
編輯#1:
完整的“兒童”實體,包括獲取器/設置器:
/**
* @ORM\Entity
* @ORM\Table(name="news_article")
*/
class NewsArticle {
/**
* @ORM\Column(type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @ORM\ManyToOne(targetEntity="News", inversedBy="newsArticle")
* @ORM\JoinColumn(name="news_id", referencedColumnName="id")
*/
private $news;
/**
* @ORM\Column(type="string", length=150, unique=false, nullable=false)
* @Assert\NotBlank()
*/
private $headline;
/**
* @ORM\Column(type="string", length=150, nullable=true)
*/
private $subheadline;
/**
* @ORM\Column(type="string", length=65536, nullable=false)
* @Assert\NotBlank()
*/
private $bodytext;
/**
* @ORM\ManyToOne(targetEntity="Language")
* @ORM\JoinColumn(name="language_id", referencedColumnName="id")
*/
private $languageId;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set headline
*
* @param string $headline
*
* @return NewsArticle
*/
public function setHeadline($headline)
{
$this->headline = $headline;
return $this;
}
/**
* Get headline
*
* @return string
*/
public function getHeadline()
{
return $this->headline;
}
/**
* Set subheadline
*
* @param string $subheadline
*
* @return NewsArticle
*/
public function setSubheadline($subheadline)
{
$this->subheadline = $subheadline;
return $this;
}
/**
* Get subheadline
*
* @return string
*/
public function getSubheadline()
{
return $this->subheadline;
}
/**
* Set bodytext
*
* @param string $bodytext
*
* @return NewsArticle
*/
public function setBodytext($bodytext)
{
$this->bodytext = $bodytext;
return $this;
}
/**
* Get bodytext
*
* @return string
*/
public function getBodytext()
{
return $this->bodytext;
}
/**
* Set news
*
* @param \Bundle\Entity\News $news
*
* @return NewsArticle
*/
public function setNews(\Bundle\Entity\News $news = null)
{
$this->news = $news;
return $this;
}
/**
* Get news
*
* @return \Bundle\Entity\News
*/
public function getNews()
{
return $this->news;
}
/**
* Set languageId
*
* @param \Bundle\Entity\Language $languageId
*
* @return NewsArticle
*/
public function setLanguageId(\Bundle\Entity\Language $languageId = null)
{
$this->languageId = $languageId;
return $this;
}
/**
* Get languageId
*
* @return \Bundle\Entity\Language
*/
public function getLanguageId()
{
return $this->languageId;
}
}
存在屬性的獲取器和設置器,但是我想知道為什么錯誤消息會錯過方法get h eadline()而不是get H eadline()嗎? 可能是問題出在TWIG中的語法錯誤:{{form_errors(form.headline)}}嗎? 我也嘗試過{{form_errors(form.newsArticle.headline)}},但錯誤消息仍然相同。
有什么提示嗎?
我認為問題只是使吸氣者受阻
當您嘗試此命令時:
php bin/console doctrine:generate:entities youBundle
用於生成getter / setter或編寫它
而且您忘記了實體中的逆數
像這樣 :
/**
* @ORM\ManyToOne(targetEntity="News", inversedBy="newsArticle" )
* @ORM\JoinColumn(name="news_id", referencedColumnName="id")
*/
private $news;
畢竟,我取得了一些進展,擺脫了錯誤信息。
我的TWIG中的一個問題是$ newsArticle是對象的數組而不是對象,因此我需要首先迭代該數組:
{% for newsArticle in form.newsArticle %}
<div class="form-group">
{{ form_label(newsArticle.headline) }}
<div class="col-sm-8 col-md-6">
{{ form_errors(newsArticle.headline) }}
{{ form_widget(newsArticle.headline) }}
</div>
</div>
<div class="form-group">
{{ form_label(newsArticle.subheadline) }}
<div class="col-sm-8 col-md-6">
{{ form_errors(newsArticle.subheadline) }}
{{ form_widget(newsArticle.subheadline) }}
</div>
</div>
<div class="form-group">
{{ form_label(newsArticle.bodytext) }}
<div class="col-sm-8 col-md-6">
{{ form_errors(newsArticle.bodytext) }}
{{ form_widget(newsArticle.bodytext) }}
</div>
</div>
{% endfor %}
另一個重要的更改是首先在NewsController中實例化NewsArticle對象:
public function addAction(Request $request) {
$lang = $this->getDoctrine()
->getRepository('Bundle:Language')
->findOneBy(array('deleted' => 0, 'fallback' => 1));
$article = new NewsArticle();
$article->setLanguageId($lang);
$news = new News();
$news->setPublic(0);
$news->setDeleted(0);
$news->setIdent($hash);
$news->getNewsArticle()->add($article);
$form = $this->createForm(NewsType::class, $news);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
$em = $this->getDoctrine()->getManager();
$em->persist($news);
$em->flush();
$this->addFlash(
'success',
'Your changes were saved!'
);
}
return $this->render('Bundle:News:add.html.twig', array(
'form' => $form->createView(),
'news' => $news,
));
}
我認為這不是最好的解決方案(特別是迭代僅包含一個對象的數組),但至少我沒有收到錯誤消息,並且它似乎暫時可行。 如果您有改進的想法,請告訴我-非常感謝您的幫助!
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