我正在创建一个用于练习目的的票务系统。
现在我在上传文件时遇到问题。
这个想法是一个工单可以有多个附件，所以我在工单和上传表之间创建了一个多对一的关系。
class Ticket {
// snip
/**
* @ORM\OneToMany(targetEntity="Ticket", mappedBy="ticket")
*/
protected $uploads;
// snip
}
上传实体类包含我从本教程中获取的上传功能：
<?php
namespace Sytzeandreae\TicketsBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Component\HttpFoundation\File\UploadedFile;
/**
* @ORM\Entity(repositoryClass="Sytzeandreae\TicketsBundle\Repository\UploadRepository")
* @ORM\Table(name="upload")
* @ORM\HasLifecycleCallbacks
*/
class Upload
{
/**
* @Assert\File(maxSize="6000000")
*/
private $file;
private $temp;
/**
* @ORM\Id
* @ORM\Column(type="integer")
* @ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* @ORM\ManyToOne(targetEntity="Ticket", inversedBy="upload")
* @ORM\JoinColumn(name="ticket_id", referencedColumnName="id")
*/
protected $ticket;
/**
* @ORM\Column(type="string")
*/
protected $title;
/**
* @ORM\Column(type="string")
*/
protected $src;
public function getAbsolutePath()
{
return null === $this->src
? null
: $this->getUploadRootDir().'/'.$this->src;
}
public function getWebPath()
{
return null === $this->src
? null
: $this->getUploadDir().'/'.$this->src;
}
public function getUploadRootDir()
{
// The absolute directory path where uplaoded documents should be saved
return __DIR__.'/../../../../web/'.$this->getUploadDir();
}
public function getUploadDir()
{
// Get rid of the __DIR__ so it doesn/t screw up when displaying uploaded doc/img in the view
return 'uploads/documents';
}
/**
* Sets file
*
* @param UploadedFile $file
*/
public function setFile(UploadedFile $file = null)
{
$this->file = $file;
if (isset($this->path)) {
// store the old name to delete after the update
$this->temp = $this->path;
$this->path = null;
} else {
$this->path = 'initial';
}
}
/**
* Get file
*
* @return UploadedFile
*/
public function getFile()
{
return $this->file;
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set title
*
* @param string $title
*/
public function setTitle($title)
{
$this->title = $title;
}
/**
* Get title
*
* @return string
*/
public function getTitle()
{
return $this->title;
}
/**
* Set src
*
* @param string $src
*/
public function setSrc($src)
{
$this->src = $src;
}
/**
* Get src
*
* @return string
*/
public function getSrc()
{
return $this->src;
}
/**
* Set ticket
*
* @param Sytzeandreae\TicketsBundle\Entity\Ticket $ticket
*/
public function setTicket(\Sytzeandreae\TicketsBundle\Entity\Ticket $ticket)
{
$this->ticket = $ticket;
}
/**
* Get ticket
*
* @return Sytzeandreae\TicketsBundle\Entity\Ticket
*/
public function getTicket()
{
return $this->ticket;
}
/**
* @ORM\PrePersist()
* @ORM\PreUpdate()
*/
public function preUpload()
{
if (null !== $this->getFile()) {
// do whatever you want to generate a unique name
$filename = sha1(uniqid(mt_rand(), true));
$this->src = $filename.'.'.$this->getFile()->guessExtension();
}
}
public function upload()
{
// the file property can be empty if the field is not required
if (null === $this->getFile()) {
return;
}
// move takes the target directory and then the target filename to move to
$this->getFile()->move(
$this->getUploadRootDir(),
$this->src
);
// check if we have an old image
if (isset($this->temp)) {
// delete the old image
unlink($this->getUploadRootDir().'/'.$this->temp);
// clear the temp image path
$this->temp = null;
}
// clean up the file property as you won't need it anymore
$this->file = null;
}
/**
* @ORM\PostRemove
*/
public function removeUpload()
{
if ($file = $this->getAbsolutePath()) {
unlink($file);
}
}
}
表单构建如下：
class TicketType extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$builder
->add('title')
->add('description')
->add('priority')
->add('uploads', new UploadType())
}
UploadType 如下所示：
class UploadType extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options) {
$builder->add('file', 'file', array(
'label' => 'Attachments',
'required' => FALSE,
'attr' => array (
'accept' => 'image/*',
'multiple' => 'multiple'
)
));
}
这部分似乎工作正常，我确实收到了一个包含文件上传器的表单。
一旦我将此行放入 Ticket 实体的构造函数中： $this->uploads = new \Doctrine\Common\Collections\ArrayCollection(); 它向我抛出以下错误：
类“Doctrine\Common\Collections\ArrayCollection”中既不存在属性“file”，也不存在方法“getFile()”或方法“isFile()”
如果我忽略此行并上传文件，则会引发以下错误：
“Sytzeandreae\TicketsBundle\Entity\Ticket”。也许您应该创建方法“setUploads()”？
所以接下来我要做的是创建这个方法，再次尝试上传，现在它抛出了我：
类 Symfony\Component\HttpFoundation\File\UploadedFile 不是有效的实体或映射的超类。
这是我真正陷入困境的地方。我看不到在哪个阶段我做错了什么，希望得到一些帮助:)
谢谢！