Symfony4/Twig/AbstractTypeExtension:无法覆盖文件小部件以显示存储在实体和数据库中的图片
我有一个存储在mysql数据库中的“member”实体,里面有一个配置文件图片(不是图像的路径) 当我在“索引”操作和“显示”操作中显示图片时,它会工作,但当我要编辑它时,我希望显示存储的当前图片,就像对其他实体数据所做的那样 我遵循了Symfony docs中的howto:但它不起作用 还尝试了此解决方案: 我包括以下代码: src/Entity/Member.phpSymfony4/Twig/AbstractTypeExtension:无法覆盖文件小部件以显示存储在实体和数据库中的图片,symfony,twig,containers,symfony-forms,symfony4,Symfony,Twig,Containers,Symfony Forms,Symfony4,我有一个存储在mysql数据库中的“member”实体,里面有一个配置文件图片(不是图像的路径) 当我在“索引”操作和“显示”操作中显示图片时,它会工作,但当我要编辑它时,我希望显示存储的当前图片,就像对其他实体数据所做的那样 我遵循了Symfony docs中的howto:但它不起作用 还尝试了此解决方案: 我包括以下代码: src/Entity/Member.php <?php namespace App\Entity; use Doctrine\Common\Collection
<?php
namespace App\Entity;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Security\Core\User\UserInterface;
use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
/**
* Member
*
* @ORM\Table(name="members", uniqueConstraints={@ORM\UniqueConstraint(name="ix_first_name_last_name", columns={"first_name","last_name"})})
* @ORM\Entity(repositoryClass="App\Repository\MemberRepository")
* @UniqueEntity(fields="email", message="Email already taken")
* @UniqueEntity(fields="username", message="Username already taken")
* @ORM\HasLifecycleCallbacks()
*/
class Member implements UserInterface, \Serializable
{
/**
* @ORM\Id()
* @ORM\GeneratedValue()
* @ORM\Column(type="integer")
*/
private $id;
/**
* @ORM\Column(type="string", length=100)
*/
private $firstName;
/**
* @ORM\Column(type="string", length=100)
*/
private $lastName;
/**
* @ORM\Column(type="blob", nullable=true)
*/
private $pictureProfile;
/**
* @ORM\Column(type="string", length=255, unique=true)
* @Assert\NotBlank()
* @Assert\Email()
*/
private $email;
public function getId()
{
return $this->id;
}
public function getFirstName(): ?string
{
return $this->firstName;
}
public function setFirstName(string $firstName): self
{
$this->firstName = $firstName;
return $this;
}
public function getLastName(): ?string
{
return $this->lastName;
}
public function setLastName(string $lastName): self
{
$this->lastName = $lastName;
return $this;
}
public function getPictureProfile()
{
if ($this->pictureProfile != null) {
$image = base64_encode(stream_get_contents($this->pictureProfile));
} else {
$image = null;
}
return $image;
}
public function setPictureProfile($pictureProfile): self
{
$this->pictureProfile = $pictureProfile;
return $this;
}
public function getEmail(): ?string
{
return $this->email;
}
public function setEmail(?string $email): self
{
$this->email = $email;
return $this;
}
}
<?php
namespace App\Controller;
use App\Entity\Member;
use App\Form\MemberType;
use App\Repository\MemberRepository;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Method;
use Symfony\Component\Security\Core\Encoder\UserPasswordEncoderInterface;
use Symfony\Component\HttpFoundation\File\UploadedFile;
/**
* @Route("/member")
*/
class MemberController extends Controller
{
/**
* @Route("/", name="member_index", methods="GET")
*/
public function index(MemberRepository $memberRepository): Response
{
return $this->render('member/index.html.twig', ['members' => $memberRepository->findAll()]);
}
/**
* @Route("/new", name="member_new", methods="GET|POST")
*/
public function new(Request $request, UserPasswordEncoderInterface $passwordEncoder): Response
{
$member = new Member();
$form = $this->createForm(MemberType::class, $member);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
if ($_FILES['member']['size']['pictureProfile'] > 0) {
$image = fread(fopen($_FILES['member']['tmp_name']['pictureProfile'], 'r'), filesize($_FILES['member']['tmp_name']['pictureProfile']));
$member->setPictureProfile($image);
}
$em = $this->getDoctrine()->getManager();
$em->persist($member);
$em->flush();
return $this->redirectToRoute('member_index');
}
return $this->render('member/new.html.twig', [
'member' => $member,
'form' => $form->createView(),
]);
}
/**
* @Route("/{id}", name="member_show", methods="GET")
*/
public function show(Member $member): Response
{
return $this->render('member/show.html.twig', ['member' => $member]);
}
/**
* @Route("/{id}/edit", name="member_edit", methods="GET|POST")
*/
public function edit(Request $request, Member $member, UserPasswordEncoderInterface $passwordEncoder): Response
{
$form = $this->createForm(MemberType::class, $member);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
if ($_FILES['member']['size']['pictureProfile'] > 0) {
$image = fread(fopen($_FILES['member']['tmp_name']['pictureProfile'], 'r'), filesize($_FILES['member']['tmp_name']['pictureProfile']));
$member->setPictureProfile($image);
}
$this->getDoctrine()->getManager()->flush();
return $this->redirectToRoute('member_index');
}
return $this->render('member/edit.html.twig', [
'member' => $member,
'form' => $form->createView(),
]);
}
/**
* @Route("/{id}", name="member_delete", methods="DELETE")
*/
public function delete(Request $request, Member $member): Response
{
if ($this->isCsrfTokenValid('delete' . $member->getId(), $request->request->get('_token'))) {
$em = $this->getDoctrine()->getManager();
$em->remove($member);
$em->flush();
}
return $this->redirectToRoute('member_index');
}
}
<?php
namespace App\Form;
use App\Entity\Member;
use App\Entity\ResearchProject;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\EmailType;
use Symfony\Component\Form\Extension\Core\Type\FileType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
class MemberType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('firstName', TextType::class, array('attr' => array('class' => 'form-control')))
->add('lastName', TextType::class, array('attr' => array('class' => 'form-control')))
->add('pictureProfile', FileType::class, array(
'data_class' => null,
'attr' => array('class' => 'form-control'),
'image_property' => 'pictureProfile'))
->add('email', EmailType::class, array('attr' => array('class' => 'form-control')))
;
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'data_class' => Member::class,
]);
}
}
<?php
namespace App\Form\Extension;
use Symfony\Component\Form\AbstractTypeExtension;
use Symfony\Component\Form\FormView;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\PropertyAccess\PropertyAccess;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\Form\Extension\Core\Type\FileType;
class ImageTypeExtension extends AbstractTypeExtension
{
public function getExtendedType()
{
return FileType::class;
}
public function configureOptions(OptionsResolver $resolver)
{
// makes it legal for FileType fields to have an image_property option
$resolver->setDefined(array('image_property'));
}
public function buildView(FormView $view, FormInterface $form, array $options)
{
if (isset($options['image_property'])) {
// this will be whatever class/entity is bound to your form (e.g. Media)
$parentData = $form->getParent()->getData();
$imageData = null;
if (null !== $parentData) {
$accessor = PropertyAccess::createPropertyAccessor();
$imageData = $accessor->getValue($parentData, $options['image_property']);
}
else{
$imageData = "Didn't load anything";
}
// sets an "image_data" variable that will be available when rendering this field
$view->vars['image_data'] = $imageData;
}
}
}
在所有这些代码之后,我知道问题的关键在于MemberType.php
,因为这行代码:
->add('pictureProfile', FileType::class, array(
'data_class' => null,
'attr' => array('class' => 'form-control'),
'image_property' => 'pictureProfile'))
我得到这个呈现的html(请注意src
属性):
我得到(再次注意src
property):
图片简介
所以数据被接收到了!
为什么它不接收图像??
我已经在那行中直接尝试了getPictureProfile
方法,但没有成功
非常感谢。没有进行任何测试,看起来您使用了错误的类型扩展 您已经麻烦地创建了一个扩展
FileType
的ImageTypeExtension
,但是您仍然在表单配置中使用FileType
->add('pictureProfile', FileType::class, array(
'data_class' => null,
'attr' => array('class' => 'form-control'),
'image_property' => 'firstName'))
这不应该是这样的吗
->add('pictureProfile', ImageType::class, array(
'data_class' => null,
'attr' => array('class' => 'form-control'),
'image_property' => 'firstName'))
很抱歉,但根据这个说法:那是不对的。或者这就是我所理解的。另一方面,我尝试了你的建议,但没有成功;我得到
无法加载类型“App\Form\ImageType”:类不存在。
错误。或者,如果我将文件类型
更改为ImageTypeExtension
,我得到无法加载类型“App\Form\Extension\ImageTypeExtension”:类未实现“Symfony\Component\Form\FormTypeInterface”
错误。无论如何,谢谢。@PepeAlvarez我的错误,没有意识到您使用扩展类型来覆盖而不是扩展。否则,我不确定bar是否会将其创建为一个新类型,而不是覆盖现有的文件类型
{% extends 'base.html.twig' %}
{% block title %}Member index{% endblock %}
{% block body %}
<h1>Member index</h1>
<table class="table table-hover">
<thead>
<tr>
<!-- <th scope="col">Id</th> -->
<th scope="col">First Name</th>
<th scope="col">Last Name</th>
<th scope="col">Picture Profile</th>
<th>Email</th>
<th scope="col">Actions</th>
</tr>
</thead>
<tbody>
{% for key, member in members %}
<tr>
<td>{{ member.firstName }}</td>
<td>{{ member.lastName }}</td>
<td><img height="80" alt="No Image" src="data:image/png;base64,{{ member.pictureProfile }}" class="img img-responsive img-preview thumbnail"/></td>
<td>{{ member.email }}</td>
<td>
<a href="{{ path('member_show', {'id': member.id}) }}">show</a>
<a href="{{ path('member_edit', {'id': member.id}) }}">edit</a>
</td>
</tr>
{% else %}
<tr>
<td colspan="29">no records found</td>
</tr>
{% endfor %}
</tbody>
</table>
<a href="{{ path('member_new') }}">Create new</a>
{% endblock %}
services:
# ...
App\Form\Extension\ImageTypeExtension:
tags:
- { name: form.type_extension, extended_type: Symfony\Component\Form\Extension\Core\Type\FileType }
->add('pictureProfile', FileType::class, array(
'data_class' => null,
'attr' => array('class' => 'form-control'),
'image_property' => 'pictureProfile'))
<div>
<label for="member_pictureProfile" class="required">Picture profile</label>
<input id="member_pictureProfile" name="member[pictureProfile]" required="required" class="form-control" type="file">
<img alt="No Image" src="data:image/png;base64," class="img img-responsive img-preview thumbnail" height="80">
</div>
->add('pictureProfile', FileType::class, array(
'data_class' => null,
'attr' => array('class' => 'form-control'),
'image_property' => 'firstName'))
<div>
<label for="member_pictureProfile" class="required">Picture profile</label>
<input id="member_pictureProfile" name="member[pictureProfile]" required="required" class="form-control" type="file">
<img alt="No Image" src="data:image/png;base64,John" class="img img-responsive img-preview thumbnail" height="80">
</div>
->add('pictureProfile', FileType::class, array(
'data_class' => null,
'attr' => array('class' => 'form-control'),
'image_property' => 'firstName'))
->add('pictureProfile', ImageType::class, array(
'data_class' => null,
'attr' => array('class' => 'form-control'),
'image_property' => 'firstName'))