zf2表单不在组合对象中设置值

时间:2016-07-30 17:50:06

标签: forms doctrine-orm annotations zend-framework2 entity

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>

enter image description here

1 个答案:

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:

  • 将学说告诉EAGER load这种关系。这将始终立即加载MetaDescription对象。请注意,这会对性能产生影响。
  • 向知道如何处理此字段的水处理器注册自定义策略(即从代理中提取它)。有关同一问题/方法的信息,请参阅this question/answer