编辑文章时遇到问题。我想编辑图像时出错。这是我的实体：
namespace Article\ArticleBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
/**
* @ORM\Table()
* @ORM\HasLifecycleCallbacks
* @ORM\Entity
*/
class Article
{
/**
* @var integer $id
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string $image
* @Assert\File( maxSize = "1024k", mimeTypesMessage = "Please upload a valid Image")
* @ORM\Column(name="image", type="string", length=255)
*/
private $image;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set image
*
* @param string $image
* @return Article
*/
public function setImage($image)
{
$this->image = $image;
return $this;
}
/**
* Get image
*
* @return string
*/
public function getImage()
{
return $this->image;
}
public function getFullImagePath() {
return null === $this->image ? null : $this->getUploadRootDir(). $this->image;
}
protected function getUploadRootDir() {
// the absolute directory path where uploaded documents should be saved
return $this->getTmpUploadRootDir().$this->getId()."/";
}
protected function getTmpUploadRootDir() {
// the absolute directory path where uploaded documents should be saved
return __DIR__ . '/../../../../web/upload/';
}
/**
* @ORM\PrePersist()
* @ORM\PreUpdate()
*/
public function uploadImage() {
// the file property can be empty if the field is not required
if (null === $this->image) {
return;
}
if(!$this->id){
$this->image->move($this->getTmpUploadRootDir(), $this->image->getClientOriginalName());
}else{
$this->image->move($this->getUploadRootDir(), $this->image->getClientOriginalName());
}
$this->setImage($this->image->getClientOriginalName());
}
/**
* @ORM\PostPersist()
*/
public function moveImage()
{
if (null === $this->image) {
return;
}
if(!is_dir($this->getUploadRootDir())){
mkdir($this->getUploadRootDir());
}
copy($this->getTmpUploadRootDir().$this->image, $this->getFullImagePath());
unlink($this->getTmpUploadRootDir().$this->image);
}
/**
* @ORM\PreRemove()
*/
public function removeImage()
{
unlink($this->getFullImagePath());
rmdir($this->getUploadRootDir());
}
}
这是我的表格代码：
namespace Article\ArticleBundle\Form;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\HttpFoundation\File\File;
class ArticleType extends AbstractType
{
/**
* @param FormBuilderInterface $builder
* @param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('image')
;
}
/**
* @param OptionsResolverInterface $resolver
*/
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Article\ArticleBundle\Entity\Article'
));
}
/**
* @return string
*/
public function getName()
{
return 'article_articlebundle_article';
}
}
这是控制器：
namespace Article\ArticleBundle\Controller;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Article\ArticleBundle\Entity\Article;
use Article\ArticleBundle\Form\ArticleType;
/**
* Article controller.
*/
class ArticleController extends Controller
{
/**
* Lists all Article entities.
*/
public function indexAction()
{
$em = $this->getDoctrine()->getManager();
$entities = $em->getRepository('ArticleArticleBundle:Article')->findAll();
return $this->render('ArticleArticleBundle:Article:index.html.twig', array(
'entities' => $entities,
));
}
/**
* Creates a new Article entity.
*/
public function createAction(Request $request)
{
$entity = new Article();
$form = $this->createCreateForm($entity);
$form->handleRequest($request);
if ($form->isValid()) {
$em = $this->getDoctrine()->getManager();
$em->persist($entity);
$em->flush();
return $this->redirect($this->generateUrl('article_show', array('id' => $entity->getId())));
}
return $this->render('ArticleArticleBundle:Article:new.html.twig', array(
'entity' => $entity,
'form' => $form->createView(),
));
}
/**
* Creates a form to create a Article entity.
*
* @param Article $entity The entity
*
* @return \Symfony\Component\Form\Form The form
*/
private function createCreateForm(Article $entity)
{
$form = $this->createForm(new ArticleType(), $entity, array(
'action' => $this->generateUrl('article_create'),
'method' => 'POST',
));
$form->add('submit', 'submit', array('label' => 'Create'));
return $form;
}
/**
* Displays a form to create a new Article entity.
*/
public function newAction()
{
$entity = new Article();
$form = $this->createCreateForm($entity);
return $this->render('ArticleArticleBundle:Article:new.html.twig', array(
'entity' => $entity,
'form' => $form->createView(),
));
}
/**
* Finds and displays a Article entity.
*/
public function showAction($id)
{
$em = $this->getDoctrine()->getManager();
$entity = $em->getRepository('ArticleArticleBundle:Article')->find($id);
if (!$entity) {
throw $this->createNotFoundException('Unable to find Article entity.');
}
$deleteForm = $this->createDeleteForm($id);
return $this->render('ArticleArticleBundle:Article:show.html.twig', array(
'entity' => $entity,
'delete_form' => $deleteForm->createView(),
));
}
/**
* Displays a form to edit an existing Article entity.
*/
public function editAction($id)
{
$em = $this->getDoctrine()->getManager();
$entity = $em->getRepository('ArticleArticleBundle:Article')->find($id);
if (!$entity) {
throw $this->createNotFoundException('Unable to find Article entity.');
}
$editForm = $this->createEditForm($entity);
$deleteForm = $this->createDeleteForm($id);
return $this->render('ArticleArticleBundle:Article:edit.html.twig', array(
'entity' => $entity,
'edit_form' => $editForm->createView(),
'delete_form' => $deleteForm->createView(),
));
}
/**
* Creates a form to edit a Article entity.
*
* @param Article $entity The entity
*
* @return \Symfony\Component\Form\Form The form
*/
private function createEditForm(Article $entity)
{
$form = $this->createForm(new ArticleType(), $entity, array(
'action' => $this->generateUrl('article_update', array('id' => $entity->getId())),
'method' => 'PUT',
));
$form->add('submit', 'submit', array('label' => 'Update'));
return $form;
}
/**
* Edits an existing Article entity.
*/
public function updateAction(Request $request, $id)
{
$em = $this->getDoctrine()->getManager();
$entity = $em->getRepository('ArticleArticleBundle:Article')->find($id);
if (!$entity) {
throw $this->createNotFoundException('Unable to find Article entity.');
}
$deleteForm = $this->createDeleteForm($id);
$editForm = $this->createEditForm($entity);
$editForm->handleRequest($request);
if ($editForm->isValid()) {
$em->flush();
return $this->redirect($this->generateUrl('article_edit', array('id' => $id)));
}
return $this->render('ArticleArticleBundle:Article:edit.html.twig', array(
'entity' => $entity,
'edit_form' => $editForm->createView(),
'delete_form' => $deleteForm->createView(),
));
}
/**
* Deletes a Article entity.
*/
public function deleteAction(Request $request, $id)
{
$form = $this->createDeleteForm($id);
$form->handleRequest($request);
if ($form->isValid()) {
$em = $this->getDoctrine()->getManager();
$entity = $em->getRepository('ArticleArticleBundle:Article')->find($id);
if (!$entity) {
throw $this->createNotFoundException('Unable to find Article entity.');
}
$em->remove($entity);
$em->flush();
}
return $this->redirect($this->generateUrl('article'));
}
/**
* Creates a form to delete a Article entity by id.
*
* @param mixed $id The entity id
*
* @return \Symfony\Component\Form\Form The form
*/
private function createDeleteForm($id)
{
return $this->createFormBuilder()
->setAction($this->generateUrl('article_delete', array('id' => $id)))
->setMethod('DELETE')
->add('submit', 'submit', array('label' => 'Delete'))
->getForm()
;
}
}
出现错误：
表单的视图数据应该是Symfony \ Component \ HttpFoundation \ File \ File类的实例，但是是（n）字符串。您可以通过设置＆＃34; data_class＆＃34;来避免此错误。 null的选项或添加一个视图转换器，将（n）字符串转换为Symfony \ Component \ HttpFoundation \ File \ File的实例。