多文件上传 symfony 4.

Question

我正在尝试上传数据库中的多个图像。 但我的代码只上传最后一个选定的。 这是代码：

/**
     * @Route("/property/add-media/{id}", name="addPhotoProperty")
     * @Method({"GET", "POST"})
     */
    public function addPhotoToProperty(Request $request, $id){
        $property = $this->getDoctrine()->getRepository(Property::class)->find($id);
        $media = new Media();
        $mediaForm = $this->createFormBuilder($media)
            ->add('pathtofile', FileType::class, array(
                'mapped' => false,
                'multiple' => true,
            ))
            ->add('isvideo', ChoiceType::class, [
                'choices' => [
                    'Video' => '1',
                    'Photo' => '0'
                ],
                'multiple' => false,
                'expanded' => true
            ])
            ->add('upload', SubmitType::class)
            ->getForm();
        $media->setProperty($property);
        $mediaForm->handleRequest($request);
        if ($mediaForm->isSubmitted() && $mediaForm->isValid()){
            $files = $mediaForm->get('pathtofile')->getData();
            //dd($files);
            foreach ($files as $file)
                {
                    $filename = md5(uniqid()).'.'.$file->guessExtension();
                    $file->move($this->getParameter('uploads'), $filename);
                    $media->setPathToFile($filename);
                    //dd($media);
                    $em = $this->getDoctrine()->getManager();
                    $em->persist($media);
                    $em->flush();
                }
        }
        return $this->render('Property/addPhotoProperty.html.twig', [
            'media' => $mediaForm->createView()
        ]);
    }

如您所见，我正在从类实体调用对象。 在这种情况下，文件上传器的形式接受多个文件或图像。

Answer 1

你的问题出在你的循环中。您使用的是同一个Media实体，并且只更改PathToFile属性。首先$em->flush();您正在创建一个新条目，但由于这是同一个实体（又名不是新实体），因此 Doctrine 正在进行更新。

foreach ($files as $file)
{
    $filename = md5(uniqid()).'.'.$file->guessExtension();
    $file->move($this->getParameter('uploads'), $filename);
    $media->setPathToFile($filename); // Same entity, that is being updated
    $em = $this->getDoctrine()->getManager();
    $em->persist($media);
    $em->flush();
}

我建议你在循环中创建一个新的。在示例中：

$em = $this->getDoctrine()->getManager(); // You don't need to slow down your code and request the same entity manager on each iteration
foreach ($files as $file)
{
    $filename = md5(uniqid()).'.'.$file->guessExtension();
    $file->move($this->getParameter('uploads'), $filename);
    $NewMedia = new Media();             // new entity, that is being created
    $NewMedia->setProperty($property);
    $NewMedia->setPathToFile($filename);
    $em->persist($NewMedia);
}
$em->flush(); //Flush outside of the loop, Doctrine will perform all queries