我对'HasLifecycleCallbacks'有疑问。当我尝试仅更新我的实体中的图像时，它不起作用（它不显示表单错误或php错误）。但是，如果我更新我的图像和字段（标题或文本），它正在工作！
没有其他错误，除了此功能外都可以。
namespace Acme\NewsBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Gedmo\Mapping\Annotation as Gedmo;
use Symfony\Component\Validator\Constraints as Assert;
/**
* News
*
* @ORM\Table(name="news")
* @ORM\HasLifecycleCallbacks
* @ORM\Entity(repositoryClass="Acme\NewsBundle\Entity\NewsRepository")
*/
class News
{
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="title", type="string", length=255)
*/
private $title;
/**
* @Gedmo\Slug(fields={"title"})
* @ORM\Column(length=255, unique=true)
*/
private $slug;
/**
* @var string
*
* @ORM\Column(name="image", type="string", length=255, nullable=true)
*/
private $image;
/**
* @Assert\File(maxSize="6000000")
*/
private $file;
private $oldFile;
/**
* @var string
*
* @ORM\Column(name="text", type="text")
*/
private $text;
/**
* @var \DateTime
*
* @ORM\Column(name="created", type="datetime")
*/
private $created;
public function __construct()
{
$this->created = new \Datetime;
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set title
*
* @param string $title
* @return News
*/
public function setTitle($title)
{
$this->title = $title;
return $this;
}
/**
* Get title
*
* @return string
*/
public function getTitle()
{
return $this->title;
}
/**
* Set slug
*
* @param string $slug
* @return News
*/
public function setSlug($slug)
{
$this->slug = $slug;
return $this;
}
/**
* Get slug
*
* @return string
*/
public function getSlug()
{
return $this->slug;
}
/**
* Set image
*
* @param string $image
* @return News
*/
public function setImage($image)
{
$this->image = $image;
return $this;
}
/**
* Get image
*
* @return string
*/
public function getImage()
{
return $this->image;
}
/**
* Set file
*
* @param string $file
* @return News
*/
public function setFile($file)
{
$this->file = $file;
return $this;
}
/**
* Get file
*
* @return string
*/
public function getFile()
{
return $this->file;
}
/**
* Set text
*
* @param string $text
* @return News
*/
public function setText($text)
{
$this->text = $text;
return $this;
}
/**
* Get text
*
* @return string
*/
public function getText()
{
return $this->text;
}
/**
* Set created
*
* @param \DateTime $created
* @return News
*/
public function setCreated($created)
{
$this->created = $created;
return $this;
}
/**
* Get created
*
* @return \DateTime
*/
public function getCreated()
{
return $this->created;
}
// upload img
public function getFullFilePath()
{
return null === $this->file ? null : $this->getUploadRootDir(). $this->file;
}
public function getUploadRootDir()
{
// the absolute directory path where uploaded documents should be saved
return $this->getTmpUploadRootDir()."news/";
}
protected function getTmpUploadRootDir()
{
// the absolute directory path where uploaded documents should be saved
return __DIR__ . '/../../../../web/up/';
}
public function getFilePath()
{
return null === $this->file ? null : "/web/up/news/". $this->file;
}
/**
* @ORM\PreUpdate()
*/
public function delOldFile()
{
if (null === $this->file) {
return;
}
if(file_exists($this->getUploadRootDir().$this->image)){
$oldDir = $this->getUploadRootDir().$this->image;
if(file_exists($oldDir)) {
unlink($oldDir);
}
}
}
/**
* @ORM\PrePersist()
* @ORM\PreUpdate()
*/
public function uploadFile()
{
var_dump(true); die();
// the file property can be empty if the field is not required
if (null === $this->file) {
return;
}
if(!is_dir($this->getUploadRootDir())){
mkdir($this->getUploadRootDir());
}
$extension = pathinfo($this->file->getClientOriginalName(), PATHINFO_EXTENSION);
$name = uniqid().'.'.$extension;
$this->file->move($this->getUploadRootDir().'/', $name);
// resize 145*145
$cropImg = $this->getUploadRootDir().'/'.$name;
$cropDest = $this->getUploadRootDir().'/'.$name;
$largeur = 145;
$hauteur = 145;
$dimension = getimagesize($cropImg);
$ratio = $dimension[0] / $dimension[1];
if($largeur == 0 && $hauteur == 0){ $largeur = $dimension[0]; $hauteur = $dimension[1]; }
else if($hauteur == 0){ $hauteur = round($largeur / $ratio); }
else if($largeur == 0){ $largeur = round($hauteur * $ratio); }
if($dimension[0] > ($largeur/$hauteur)*$dimension[1] ){ $dimY = $hauteur; $dimX = round($hauteur*$dimension[0]/$dimension[1]); $decalX=($dimX-$largeur)/2; $decalY=0;}
if($dimension[0] < ($largeur/$hauteur)*$dimension[1]){ $dimX = $largeur; $dimY = round($largeur*$dimension[1]/$dimension[0]); $decalY=($dimY-$hauteur)/2; $decalX=0;}
if($dimension[0] == ($largeur/$hauteur)*$dimension[1]){ $dimX = $largeur; $dimY = $hauteur; $decalX=0; $decalY=0;}
$miniature = imagecreatetruecolor ($largeur,$hauteur);
if(in_array($extension,array('jpeg','jpg','JPG','JPEG'))){$file = imagecreatefromjpeg($cropImg); }
elseif(in_array($extension,array('png','PNG'))){$file = imagecreatefrompng($cropImg); }
elseif(in_array($extension,array('gif','GIF'))){$file = imagecreatefromgif($cropImg); }
else{ return false; }
imagecopyresampled($miniature,$file,-$decalX,-$decalY,0,0,$dimX,$dimY,$dimension[0],$dimension[1]);
imagejpeg($miniature,$cropDest,90);
$this->setImage($name);
}
/**
* @ORM\PostPersist()
*/
public function moveFile()
{
if (null === $this->file) {
return;
}
if(!is_dir($this->getUploadRootDir())){
mkdir($this->getUploadRootDir());
}
}
/**
* @ORM\PreRemove()
*/
public function removeFile()
{
if ($this->getFullFilePath()) {
unlink($this->getFullFilePath());
}
}
}
答案 0 :(得分：2)
此问题已知错误，请查看文档：{{3}}
要解决此问题，该文档建议您使用“updatedAt”字段，每次持久保存实体时都会更新该字段，即使只更改了文件字段。
答案 1 :(得分：1)
检查您的实体表单类型是否已将映射（mapped选项设置为true）图像字段。
$builder->add('createdDateTime',null,
array("mapped" => true,
"required" => false,
"description" => "Thedatetime of creation")
);