Symfony 2.1 验证器看不到 MIME 类型 [英] Symfony 2.1 validator does not see mime-type

问题描述

我正在开发 Symfony 2.1，我正在将图像添加到默认的 fosUserBundle 用户实体.在我的实体之上，我有这个:

I'm working on Symfony 2.1 where i'm adding images to the default fosUserBundle User entity. On top of my entity I have this:

use FOS\UserBundle\Entity\User as BaseUser;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Component\HttpFoundation\File\UploadedFile;

/**
* @ORM\Entity
* @ORM\HasLifecycleCallbacks
* @ORM\Table(name="users")
*/
class User extends BaseUser

接下来是相关字段:

/**
* @ORM\Column(nullable=true)
* @Assert\File(maxSize="5M", mimeTypes={"image/gif", "image/jpeg", "image/png"})
*/
protected $promo;

我得到的错误是 文件的 MIME 类型无效 ("").允许的 mime 类型为image/gif"、image/jpeg"、image/png"..

奇怪的是，当我 var_dump $this->promo->getClientMimeType() 我整齐地得到 image/jpeg...因此，出于某种原因，验证器正在寻找错误的位置?

The weird thing is, when I var_dump $this->promo->getClientMimeType() I neatly get image/jpeg... So for some reason the validator is looking in the wrong location?

有没有人知道可能导致这种情况的原因?

Does anybody have any idea what might cause this?

推荐答案

事实证明，在您的 php.ini 文件中安装 php_fileinfo 扩展是至关重要的.没有它，验证器可以使用 uploadedFile 中的 guessExtion() 方法来验证您的文件.

As it turns out it is crucial to have the php_fileinfo extension installed in your php. Without it the validator can nog validate your files as it uses the guessExtion() method from uploadedFile.

这解决了我的问题.但是，在共享主机上这可能会导致问题，因为您可能无法启用 php_fileinfo.

This fixed my problem. However, on shared hosting this might cause trouble since you might not be able to enable php_fileinfo.

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