我对ZF2注释表单有疑问。 具有“组合对象”的值不设置默认值。 我附上了我的代码。
为什么form不在MetaContent Object行中设置值?我做错了什么? 我写的时候在控制器里 “echo $ category-> getMetaContent() - > getMetaDescription();”它表现出正确的价值
<?php
namespace Application\Entity;
use Doctrine\ORM\Mapping as ORM;
use Zend\Form\Annotation;
/**
* BlogCategory
*
* @ORM\Table(name="blog_category", indexes={@ORM\Index(name="category_parent_idx", columns={"parent_id"})})
* @ORM\Entity
*
* @Annotation\Hydrator("Zend\Stdlib\Hydrator\ObjectProperty")
* @Annotation\Name("Category")
*/
class BlogCategory
{
/**
* @var integer
*
* @ORM\Column(name="id", type="integer", nullable=false)
* @ORM\Id
* @ORM\GeneratedValue(strategy="IDENTITY")
*
* @Annotation\Exclude()
*/
private $id;
* @Annotation\Filter({"name":"StripTags"})
* @Annotation\Required({"required":"true"})
* @Annotation\Attributes({"class":"gui-input"})
*/
private $name;
/**
* @var \Application\Entity\MetaContent
*
* @ORM\ManyToOne(targetEntity="Application\Entity\MetaContent", cascade={"persist"})
* @ORM\JoinColumns({
* @ORM\JoinColumn(name="meta_content_id", referencedColumnName="id")
* })
*
*
* @Annotation\ComposedObject("Application\Entity\MetaContent")
* @Annotation\Options({"label":"Meta content:", "label_options":{"class":"control-label"}})
*/
private $metaContent;
<?php
namespace Application\Entity;
use Doctrine\ORM\Mapping as ORM;
use Zend\Form\Annotation;
/**
* MetaContent
*
* @ORM\Table(name="meta_content")
* @ORM\Entity
*
* @Annotation\Name("MetaContent")
*/
class MetaContent
{
/**
* @var integer
*
* @ORM\Column(name="id", type="integer", nullable=false)
* @ORM\Id
* @ORM\GeneratedValue(strategy="IDENTITY")
*
* @Annotation\Attributes({"type":"hidden"})
* @Annotation\AllowEmpty(true)
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="meta_description", type="string", length=255, nullable=true)
*
* @Annotation\Type("Zend\Form\Element\Text")
* @Annotation\Required({"required":"true"})
* @Annotation\Options({"label":"Meta description:"})
* @Annotation\Validator({"name":"StringLength", "options":{"min":"5", "max":"255"}})
* @Annotation\Filter({"name":"StripTags"})
* @Annotation\Attributes({"class":"gui-input"})
*/
private $metaDescription;
use Zend\Form\Annotation\AnnotationBuilder;
use DoctrineORMModule\Stdlib\Hydrator\DoctrineEntity;
class IndexController extends AbstractAdminController {
public function indexAction() {
$em = $this->getServiceLocator()->get('Doctrine\ORM\EntityManager');
$view = new ViewModel();
$data = $this->getRequest()->getPost();
$category = $em->getRepository('Application\Entity\BlogCategory')->findOneByName('tests');
$builder = new AnnotationBuilder();
$form = $builder->createForm($category);
$form->setHydrator(new DoctrineEntity($em, false));
$form->add(array(
'type' => 'submit',
'name' => 'save',
'attributes' => array(
'value' => 'Submit',
)
));
$form->bind($category);
$form->prepare();
if ($this->getRequest()->isPost()){
$form->setData($data);
if ($form->isValid()){
echo 'good!';
}else{
echo 'bad';
}
}
$view->setVariable('form', $form);
return $view;
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
</head>
<body>
<h1>Test</h1>
{{form().openTag(form)|raw}}
{{formCollection(form)}}
{{form().closeTag()|raw}}
</body>
</html>
答案 0 :(得分:0)
默认情况下,doctrine关系是延迟加载的(代理) - 它们仅在实际访问集合中的项时加载。这种情况在幕后发生,所以当你这样做时:
$category->getMetaContent();
// Collection is NOT loaded yet, it is a transparent PROXY
count($category->getMetaContent());
// In order to cound, we must load,
// so only NOW the collection is loaded, replacing the PROXY
$category->getMetaContent()->getMetaDescription();
// Same here, only this command actually would load the MetaDescription
$category->getMetaContent()->getMetaDescription();
// Subsequent calls will return the MetaDescription directly,
// as it already be been loaded
最后一个特别重要。一旦代理被实际对象替换,就会立即返回该对象。有关代理的更多信息,请参阅this question(建议阅读!)
现在使用保湿剂时,事情变得更加困难。在提取期间,getMetaContent
返回的引用是PROXY。但是DoctrineEntity
水箱没有解析代理,只是将其略过为un-extractable
。这正是你在这里看到的。
那么为什么当你的控制器中有
$category->getMetaContent()->getMetaDescription();
时它才能正常工作?因为这样,控制器已经确保代理已被实际对象替换!现在,水合器接收实际对象而不是代理 - 它知道如何提取。
要解决此问题,您需要确保代理实际已解决。你可以通过两种简单的方式来做到这一点:
MetaDescription
对象。请注意,这会对性能产生影响。