我在使用 Symfony 2 时遇到问题。当我尝试使用来自实体的数据填充表单时，我收到此错误：
“表单的视图数据应为标量、数组或 \ArrayAccess 的实例类型，但它是 DateTime 类的实例。您可以通过将“data_class”选项设置为“DateTime”或添加视图来避免此错误将 DateTime 类的实例转换为标量、数组或 \ArrayAccess 的实例的转换器。”
我对 Symfony 2 没有太多经验。要创建实体，我使用 YAML 选项。
谢谢。
控制器代码：
public function editAction($id)
{
$em = $this->getDoctrine()->getManager();
$candidate = $em->getRepository('OUProjectBundle:Candidate')->findOneById($id);
$form = $this->createForm(new CandidateType(), $candidate);
return $this->render('MyProjectBundle:Candidate:new.html.twig', array(
'form' => $form->createView(),
));
}
候选人类型类：
namespace My\ProjectBundle\Form;
use Symfony\Component\Form\AbstractType;
use My\ProjectBundle\Entity\Candidate;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Doctrine\ORM\EntityRepository;
class CandidateType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('name', 'text', array('label'=>'Name:'));
$builder->add('surname', 'text', array('label'=>'Surname:'));
$builder->add('email', 'text', array('label'=>'Email:'));
$builder->add('phone', 'text', array('label'=>'Telephone:'));
$builder->add('DOB', 'text', array('label'=>'Date of Birth:'));
$builder->add('address', 'text', array('label'=>'Address'));
$builder->add('town', 'text', array('label'=>'Town:'));
$builder->add('city', 'text', array('label'=>'City:'));
$builder->add('post_code', 'text', array('label'=>'Post Code:'));
$builder->add('file', 'file', array('label' => 'CV file (.docx)', 'required' => true));
}
public function getName()
{
return 'candidate';
}
public function getDefaultOptions(array $options)
{
return array(
'data_class' => 'My\ProjectBundle\Entity\Candidate',
);
}
}
实体：
namespace OU\ProjectBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use My\ProjectBundle\Utils\DocReader;
/**
* Candidate
*/
class Candidate
{
/**
* @var integer
*/
private $id;
/**
* @var string
*/
private $name;
/**
* @var string
*/
private $surname;
/**
* @var \DateTime
*/
private $dob;
/**
* @var string
*/
private $phone;
/**
* @var string
*/
private $address;
/**
* @var string
*/
private $town;
/**
* @var string
*/
private $city;
/**
* @var string
*/
private $post_code;
/**
* @var string
*/
private $cv_text;
/**
* @var string
*/
private $cv_file;
/**
* @var \DateTime
*/
private $createdAt;
/**
* @var \DateTime
*/
private $updatedAt;
/**
* @var \DateTime
*/
private $deletedAt;
/**
* @var \Doctrine\Common\Collections\Collection
*/
private $skill;
public $file;
/**
* Constructor
*/
public function __construct()
{
$this->skill = new \Doctrine\Common\Collections\ArrayCollection();
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set name
*
* @param string $name
* @return Candidate
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* Get name
*
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* Set surname
*
* @param string $surname
* @return Candidate
*/
public function setSurname($surname)
{
$this->surname = $surname;
return $this;
}
/**
* Get surname
*
* @return string
*/
public function getSurname()
{
return $this->surname;
}
/**
* Set dob
*
* @param \DateTime $dob
* @return Candidate
*/
public function setDob($dob)
{
$this->dob = new \DateTime($dob);
return $this;
}
/**
* Get dob
*
* @return \DateTime
*/
public function getDob()
{
return $this->dob;
}
/**
* Set phone
*
* @param string $phone
* @return Candidate
*/
public function setPhone($phone)
{
$this->phone = $phone;
return $this;
}
/**
* Get phone
*
* @return string
*/
public function getPhone()
{
return $this->phone;
}
/**
* Set address
*
* @param string $address
* @return Candidate
*/
public function setAddress($address)
{
$this->address = $address;
return $this;
}
/**
* Get address
*
* @return string
*/
public function getAddress()
{
return $this->address;
}
/**
* Set town
*
* @param string $town
* @return Candidate
*/
public function setTown($town)
{
$this->town = $town;
return $this;
}
/**
* Get town
*
* @return string
*/
public function getTown()
{
return $this->town;
}
/**
* Set city
*
* @param string $city
* @return Candidate
*/
public function setCity($city)
{
$this->city = $city;
return $this;
}
/**
* Get city
*
* @return string
*/
public function getCity()
{
return $this->city;
}
/**
* Set post_code
*
* @param string $postCode
* @return Candidate
*/
public function setPostCode($postCode)
{
$this->post_code = $postCode;
return $this;
}
/**
* Get post_code
*
* @return string
*/
public function getPostCode()
{
return $this->post_code;
}
/**
* Set cv_text
*
* @param string $cvText
* @return Candidate
*/
public function setCvText($cvText)
{
$this->cv_text = $cvText;
return $this;
}
/**
* Get cv_text
*
* @return string
*/
public function getCvText()
{
return $this->cv_text;
}
/**
* Set cv_file
*
* @param string $cvFile
* @return Candidate
*/
public function setCvFile($cvFile)
{
$this->cv_file = $cvFile;
return $this;
}
/**
* Get cv_file
*
* @return string
*/
public function getCvFile()
{
return $this->cv_file;
}
/**
* Set createdAt
*
* @param \DateTime $createdAt
* @return Candidate
*/
public function setCreatedAt($createdAt)
{
$this->createdAt = $createdAt;
return $this;
}
/**
* Get createdAt
*
* @return \DateTime
*/
public function getCreatedAt()
{
return $this->createdAt;
}
/**
* Set updatedAt
*
* @param \DateTime $updatedAt
* @return Candidate
*/
public function setUpdatedAt($updatedAt)
{
$this->updatedAt = $updatedAt;
return $this;
}
/**
* Get updatedAt
*
* @return \DateTime
*/
public function getUpdatedAt()
{
return $this->updatedAt;
}
/**
* Set deletedAt
*
* @param \DateTime $deletedAt
* @return Candidate
*/
public function setDeletedAt($deletedAt)
{
$this->deletedAt = $deletedAt;
return $this;
}
/**
* Get deletedAt
*
* @return \DateTime
*/
public function getDeletedAt()
{
return $this->deletedAt;
}
/**
* Add skill
*
* @param \My\ProjectBundle\Entity\Skill $skill
* @return Candidate
*/
public function addSkill(\My\ProjectBundle\Entity\Skill $skill)
{
$this->skill[] = $skill;
return $this;
}
/**
* Remove skill
*
* @param \My\ProjectBundle\Entity\Skill $skill
*/
public function removeSkill(\My\ProjectBundle\Entity\Skill $skill)
{
$this->skill->removeElement($skill);
}
/**
* Get skill
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getSkill()
{
return $this->skill;
}
/**
* @ORM\PrePersist
*/
public function preUpload()
{
if (null !== $this->file) {
// do whatever you want to generate a unique name
$extension = $this->file->guessExtension();
if($extension === "zip") $extension = "docx";
$this->setCvFile(uniqid().'.'.$extension);
// if there is an error when moving the file, an exception will
// be automatically thrown by move(). This will properly prevent
// the entity from being persisted to the database on error
$this->file->move($this->getUploadRootDir(), $this->cv_file);
$this->setCvText(DocReader::readDocxFile($this->getAbsolutePath()));
}
}
/**
* @ORM\PrePersist
*/
public function setCreatedAtValue()
{
if(!$this->getCreatedAt())
{
$this->createdAt = new \DateTime();
}
}
/**
* @ORM\PreUpdate
*/
public function setUpdatedAtValue()
{
$this->updatedAt = new \DateTime();
}
/**
* @ORM\PostPersist
*/
public function upload()
{
if (null === $this->file) {
return;
}
unset($this->file);
}
/**
* @ORM\PostRemove
*/
public function removeUpload()
{
if ($file = $this->getAbsolutePath()) {
unlink($file);
}
}
/**
* @ORM\PostRemove
*/
public function setDeletedAtValue()
{
if(!$this->getDeletedAt())
{
$this->deletedAt = new \DateTime();
}
}
protected function getUploadDir()
{
return 'uploads/cvs';
}
protected function getUploadRootDir()
{
return __DIR__.'/../../../../web/'.$this->getUploadDir();
}
public function getWebPath()
{
return null === $this->getCvFile() ? null : $this->getUploadDir().'/'.$this->getCvFile();
}
public function getAbsolutePath()
{
return null === $this->getCvFile()? null : $this->getUploadRootDir().'/'.$this->getCvFile();
}
/**
* @var \Doctrine\Common\Collections\Collection
*/
private $skill_candidate;
/**
* Add skill_candidate
*
* @param \My\ProjectBundle\Entity\SkillCandidate $skillCandidate
* @return Candidate
*/
public function addSkillCandidate(\My\ProjectBundle\Entity\SkillCandidate $skillCandidate)
{
$this->skill_candidate[] = $skillCandidate;
return $this;
}
/**
* Remove skill_candidate
*
* @param \My\ProjectBundle\Entity\SkillCandidate $skillCandidate
*/
public function removeSkillCandidate(\My\ProjectBundle\Entity\SkillCandidate $skillCandidate)
{
$this->skill_candidate->removeElement($skillCandidate);
}
/**
* Get skill_candidate
*
* @return \Doctrine\Common\Collections\Collection
*/
public function getSkillCandidate()
{
return $this->skill_candidate;
}
public function __toString()
{
return $this->getName().' '.$this->getSurname();
}
/**
* @var string
*/
private $email;
/**
* Set email
*
* @param string $email
* @return Candidate
*/
public function setEmail($email)
{
$this->email = $email;
return $this;
}
/**
* Get email
*
* @return string
*/
public function getEmail()
{
return $this->email;
}
}