我的“团队”实体有一个表单。该实体具有“图像”字段。此字段在创建过程中是必需的,但在编辑过程中不需要。但是现在,在编辑过程中,如果我没有在文件输入中提供任何图像,则空输入仍然存在,因此我的数据库字段在此过程中被清空。 如果表单文件输入中没有提供任何内容,我该怎么做才能避免此字段的持久性?因此,实体保留此字段的旧值。当然,如果提供了一个文件,我希望他删除旧文件。
我的控制器看起来像这样:
if ($request->getMethod() == 'POST') {
$form->bind($request);
if ($form->isValid()) {
$em->persist($team);
$em->flush();
...
}
}
和我的实体的一部分,处理图像(我很确定我必须在这里做一些事情,但不知道到底是什么):
/**
* @ORM\PrePersist()
* @ORM\PreUpdate()
*/
public function uploadImage() {
// the file property can be empty if the field is not required
if (null === $this->image) {
return;
}
if(!$this->id){
$this->image->move($this->getTmpUploadRootDir(), $this->image->getClientOriginalName());
}else{
$this->image->move($this->getUploadRootDir(), $this->image->getClientOriginalName());
}
$this->setImage($this->image->getClientOriginalName());
}
修改
好的,我对this answer's code代码进行了一些更改,因为显然事件侦听器在其回调中要求FormEvent
实例,而不是FormInterface
实例。
$builder->addEventListener(FormEvents::POST_SUBMIT, function (FormEvent $event) {
// Retrieve submitted data
$form = $event->getForm();
$item = $event->getData();
// Test if upload image is null (maybe adapt it to work with your code)
if (null !== $form->get('image')->getData()) {
var_dump($form->get('image')->getData());
die('image provided');
$item->setImage($form->get('image')->getData());
}
});
当我提供图像时,脚本会按预期进入测试die()
。当我不提供任何文件时,脚本不会进入测试if()
,但我的数据库中的字段仍然会被删除一个空值。有什么想法吗?
如下所述,这是表格
// src/Van/TeamsBundle/Form/TeamEditType.php
namespace Van\TeamsBundle\Form;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
class TeamEditType extends TeamType // Ici, on hérite de ArticleType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
// On fait appel à la méthode buildForm du parent, qui va ajouter tous les champs à $builder
parent::buildForm($builder, $options);
// On supprime celui qu'on ne veut pas dans le formulaire de modification
$builder->remove('image')
->add('image', 'file', array(
'data_class' => null,
'required' => false
))
;
$builder->addEventListener(FormEvents::POST_SUBMIT, function (FormEvent $event) {
// Retrieve submitted data
$form = $event->getForm();
$item = $event->getData();
// Test if upload image is null (maybe adapt it to work with your code)
if (null !== $form->get('image')->getData()) {
var_dump($form->get('image')->getData());
die('image provided');
$item->setImage($form->get('image')->getData());
}
});
}
// On modifie cette méthode car les deux formulaires doivent avoir un nom différent
public function getName()
{
return 'van_teamsbundle_teamedittype';
}
}
以及整个团队实体:
<?php
namespace Van\TeamsBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
/**
* Team
*
* @ORM\Table()
* @ORM\HasLifecycleCallbacks
* @ORM\Entity
* @ORM\Entity(repositoryClass="Van\TeamsBundle\Entity\TeamRepository") @ORM\Table(name="van_teams")
*/
class Team
{
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="name", type="string", length=100)
*/
private $name;
/**
* @var string
*
* @ORM\Column(name="countryCode", type="string", length=2)
*/
private $countryCode;
/**
* @ORM\ManyToOne(targetEntity="Van\TeamsBundle\Entity\Game")
* @ORM\JoinColumn(nullable=false)
*/
private $game;
/**
* @ORM\ManyToOne(targetEntity="Van\TeamsBundle\Entity\Statut")
* @ORM\JoinColumn(nullable=false)
*/
private $statut;
/**
* @var string $image
* @Assert\File( maxSize = "1024k", mimeTypesMessage = "Please upload a valid Image")
* @ORM\Column(name="image", type="string", length=255)
*/
private $image;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set name
*
* @param string $name
* @return Team
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* Get name
*
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* Set countryCode
*
* @param string $countryCode
* @return Team
*/
public function setCountryCode($countryCode)
{
$this->countryCode = $countryCode;
return $this;
}
/**
* Get countryCode
*
* @return string
*/
public function getCountryCode()
{
return $this->countryCode;
}
/**
* Set image
*
* @param string $image
* @return Team
*/
public function setImage($image)
{
$this->image = $image;
return $this;
}
/**
* Get image
*
* @return string
*/
public function getImage()
{
return $this->image;
}
/**
* Set game
*
* @param \Van\TeamsBundle\Entity\Game $game
* @return Team
*/
public function setGame(\Van\TeamsBundle\Entity\Game $game)
{
$this->game = $game;
return $this;
}
/**
* Get game
*
* @return \Van\TeamsBundle\Entity\Game
*/
public function getGame()
{
return $this->game;
}
/**
* Set statut
*
* @param \Van\TeamsBundle\Entity\Statut $statut
* @return Team
*/
public function setStatut(\Van\TeamsBundle\Entity\Statut $statut)
{
$this->statut = $statut;
return $this;
}
/**
* Get statut
*
* @return \Van\TeamsBundle\Entity\Statut
*/
public function getStatut()
{
return $this->statut;
}
public function getFullImagePath() {
return null === $this->image ? null : $this->getUploadRootDir(). $this->image;
}
protected function getUploadRootDir() {
// the absolute directory path where uploaded documents should be saved
// return $this->getTmpUploadRootDir();
return __DIR__ . '/../../../../web/uploads/';
}
protected function getTmpUploadRootDir() {
// the absolute directory path where uploaded documents should be saved
return __DIR__ . '/../../../../web/uploads_tmp/';
}
/**
* @ORM\PrePersist()
* @ORM\PreUpdate()
*/
public function uploadImage() {
// the file property can be empty if the field is not required
if (null === $this->image) {
return;
}
if(!$this->id){
$this->image->move($this->getTmpUploadRootDir(), $this->image->getClientOriginalName());
}else{
$this->image->move($this->getUploadRootDir(), $this->image->getClientOriginalName());
}
$this->setImage($this->image->getClientOriginalName());
}
/**
* @ORM\PostPersist()
*/
public function moveImage()
{
if (null === $this->image) {
return;
}
if(!is_dir($this->getUploadRootDir())){
mkdir($this->getUploadRootDir());
}
copy($this->getTmpUploadRootDir().$this->image, $this->getFullImagePath());
unlink($this->getTmpUploadRootDir().$this->image);
}
/**
* @ORM\PreRemove()
*/
public function removeImage()
{
unlink($this->getFullImagePath());
rmdir($this->getUploadRootDir());
}
}
编辑2
我做到了。当我提供图像时,它将保存在数据库的图像字段中,并重定向到我的索引页面。当我不提供任何图像时,不会发生重定向,并且在我的文件输入中出现以下消息:“无法找到该文件。”在我的TeamEditType
课程中,我做了以下操作,因此不需要图片。
$builder->remove('image')
->add('image', 'file', array(
'data_class' => null,
'required' => false
))
;
答案 0 :(得分:14)
从Symfony 2.3开始,您只需使用 PATCH http方法,如文档there所述。
$form = $this->createForm(FooType::class, $foo, array(
'action' => $this->generateUrl('foo_update', array('id' => $foo->getId())),
'method' => 'PATCH',
));
这是一种使用主窗体部分更新实体的简单方法,无需渲染所有字段。
答案 1 :(得分:6)
Symfony 2.4中的一种方法(Symfony2 coockbook中的更多信息):
public function buildForm(FormBuilderInterface $builder, array $options)
{
// $builder->add() ...
$builder->addEventListener(FormEvents::POST_SUBMIT, function (FormInterface $form) {
// Retrieve submitted data
$form = $event->getForm();
$image = $form->getData();
// Test if upload image is null (maybe adapt it to work with your code)
if (null !== $form->get('uploadImage')->getData()) {
$image->setUploadImage($form->get('uploadImage')->getData());
}
});
}
您似乎已经在测试了prepersit数据。请尝试以下方法:
public function setImage($image)
{
if($image !== null) {
$this->image = $image;
return $this;
}
}
答案 2 :(得分:0)
我使用symfony 3.3并面临同样的问题,下面是我克服它的解决方案。
您需要在图像属性以外的实体中创建额外的图像上传属性,例如$ file;
Product.php
/**
* @var string
*
* @ORM\Column(name="image", type="string")
*
*/
private $image;
/**
*
* @Assert\File(mimeTypes={ "image/jpeg", "image/jpg", "image/png" })
*/
private $file;
public function setFile($file)
{
$this->file = $file;
return $this;
}
public function getFile()
{
return $this->file;
}
// other code i.e image setter getter
...
ProductType.php
$builder->add('file', FileType::class, array(
'data_class' => null,
'required'=>false,
'label' => 'Upload Image (jpg, jpeg, png file)')
);
Form.html.twig
<div class="form-group">
{{ form_label(form.file) }}
{{ form_widget(form.file, {'attr': {'class': 'form-control'}}) }}
</div>
最后是ProductController.php
...
if ($form->isSubmitted() && $form->isValid()) {
$file = $item->getFile();
if($file instanceof UploadedFile) {
$fileName = md5(uniqid()).'.'.$file->guessExtension();
$file->move(
$this->getParameter('upload_directory'),
$fileName
);
$item->setImage($fileName);
}
...
}
...
关于upload_directory
应用程序/配置/ config.html
parameters:
upload_directory: '%kernel.project_dir%/web/uploads'
在web目录中创建一个uploads
目录。
答案 3 :(得分:0)
我通过使用PHP Reflection API解决了此问题。我的方法是浏览实体类的属性,并将查询中未提供的值替换为已保存的值。
/**
* @param \ReflectionClass $reflectionClass
* @param $entity
* @param Request $request
* @return Request
*/
public function formatRequest($class, $entity, Request $request){
$reflectionClass = new \ReflectionClass('AppBundle\Entity\\'.$class);
foreach ($reflectionClass->getProperties() as $attribut)
{
$attribut->setAccessible(true); // to avoid fatal error when trying to access a non-public attribute
if($request->request->get($attribut->getName()) == null) { // if the attribute value is not provided in the request
$request->request->set($attribut->getName(), $attribut->getValue($entity));
}
}
return $request;
}
然后我像这样使用它:
$request = $this->formatRequest("EntityName", $entity, $request);
这真的很通用。