Symfony2图像文件上传

Question

我想通过表单处理图片上传，然后在我的网站的其他地方显示这些图片上传。

到目前为止，我一直在看Cookbook和其他教程。我已经创建了一个实体和一个表单，并且能够提交，但我不确定是否将文件本身存储在我的数据库中，或者只是它的名字。

当我试图在我的视图中显示图像资源未找到图像上的错误。任何有关在Symfony中上传图像的正确方法的建议？

这就是我到目前为止。实体

<?php 
namespace BlogBundle\Entity; 
use Symfony\Component\HttpFoundation\File\File; 
use Doctrine\ORM\Mapping as ORM; 
use Symfony\Component\Validator\Constraints as Assert; 
/** 
* Photo 
* 
* 
* @ORM\Entity 
* @ORM\HasLifecycleCallbacks 
*/ 
class Upload 
{ 

/** 
* @var integer 
* 
* @ORM\Column(name="id", type="integer") 
* @ORM\Id 
* @ORM\GeneratedValue(strategy="AUTO") 
*/ 
private $id; 
    /** 
    *Image File 
* @var File 
* @Assert\File(maxSize = "5M",mimeTypes = {"image/jpeg", "image/gif", "image/png", "image/tiff"}, mimeTypesMessage = "Please upload a valid Image") 
    * 
    */ 
    private $file; 
    /** 
* @ORM\Column(type="string", length=500) 
*/ 
private $title; 
/** 
* @ORM\Column(type="string", length=500) 
*/ 
private $description; 


/** 
* Image path 
* 
* @var string 
* 
* @ORM\Column(type="text", length=255, nullable=false) 
*/ 
protected $path; 


protected function getUploadRootDir() 
{ 
    return __DIR__.'/../../../../web/'.$this->getUploadDir(); 
} 

protected function getUploadDir() 
{ 
    // get rid of the __DIR__ so it doesn't screw up 
    // when displaying uploaded doc/image in the view. 
    return 'uploads/documents'; 
} 

/** 
* Get id 
* 
* @return integer 
*/ 
public function getId() 
{ 
    return $this->id; 
} 

/** 
* Set title 
* 
* @param string $title 
* @return Upload 
*/ 
public function setTitle($title) 
{ 
    $this->title = $title; 

    return $this; 
} 

/** 
* Get title 
* 
* @return string 
*/ 
public function getTitle() 
{ 
    return $this->title; 
} 

/** 
* Set description 
* 
* @param string $description 
* @return Upload 
*/ 
public function setDescription($description) 
{ 
    $this->description = $description; 

    return $this; 
} 

/** 
* Get description 
* 
* @return string 
*/ 
public function getDescription() 
{ 
    return $this->description; 
} 

/** 
* Set path 
* 
* @param string $path 
* @return Upload 
*/ 
public function setPath($path) 
{ 
    $this->path = $path; 

    return $this; 
} 

/** 
* Get path 
* 
* @return string 
*/ 
public function getPath() 
{ 
    return $this->path; 
} 

/** 
* Called before saving the entity 
* @ORM\PrePersist() 
* @ORM\PreUpdate() 
*/ 
public function preUpload() 
{ 
if (null !== $this->file) { 
    // do whatever you want to generate a unique name 
    $filename = sha1(uniqid(mt_rand(), true)); 
    $this->path = $filename.'.'.$this->file->guessExtension(); 
} 
} 

/** 
* Called before entity removal 
* 
* @ORM\PreRemove() 
*/ 
public function removeUpload() 
{ 
    if ($file = $this->getAbsolutePath()) 
    { 
    unlink($file); 
    } 
} 

/** 
* Called after entity persistence 
* 
* @ORM\PostPersist() 
* @ORM\PostUpdate() 
*/ 
public function upload() 
{ 
// The file property can be empty if the field is not required 
if (null === $this->file) { 
    return; 
} 

// Use the original file name here but you should 
// sanitize it at least to avoid any security issues 

// move takes the target directory and then the 
// target filename to move to 
$this->file->move(
    $this->getUploadRootDir(), 
    $this->getFile()->getClientOriginalName() 
); 

// set the path property to the filename where you've saved the file 
$this->path = $this->getFile()->getClientOriginalName(); 


// Clean up the file property as you won't need it anymore 
$this->file = null; 
} 

/** 
* Sets file. 
* 
* @param UploadedFile $file 
*@return Upload 
*/ 
public function setFile(File $file = null) 
{ 
    $this->file = $file; 

} 

/** 
* Get file. 
* 
* @return UploadedFile 
*/ 
public function getFile() 
{ 
    return $this->file; 
} 
    } 

控制器方法

/** This is the homepage for the admin area, for adding,deleting,editing of blog posts. 
* @Route("/posted/admin/upload", name="upload") 
* @Template() 
*/ 
public function uploadimageAction(Request $request) 
{ 
$upload = new Upload(); 


//create checkboxtype form 
$form = $this->createForm(new ImageFormType(), $upload, array(
     'action' => $this->generateUrl('upload'), 
     'method' => 'POST', 
)); 

$form->handleRequest($request); 

if($form->isValid()){ 
      $em = $this->getDoctrine()->getManager(); 
      $upload->upload(); 
      $em->persist($upload); 
      $em->flush(); 
    // exit(\Doctrine\Common\Util\Debug::dump($post)); 

     return $this->render('BlogBundle:Default:success.html.twig' 


      ); 
      ; 
} 
return $this->render('BlogBundle:Default:upload.html.twig',array(
      'form' =>$form->createView(), 

)); 
} 

Answer 1

你只存储在数据库的路径，只是它necesary说。

使用路径就可以显示在您的视图文件

PD：您正在使用存储在文件服务器：

$this->file->move(
    $this->getUploadRootDir(), 
    $this->getFile()->getClientOriginalName() 
);