如何將實體映射到表單中的Symfony 2

Question

我使用Symfony的2個問題。當我試圖來用一個實體的數據來一個形式，我得到這個錯誤：

「的形式的顯示數據是預期是\ ArrayAccess類型的標量，數組或實例，但是是類DateTime的一個實例。可以通過將「data_class」選項設置爲「DateTime」或通過添加一個視圖轉換器來避免此錯誤將DateTime類轉換爲標量，數組或ArrayAccess的一個實例。「

我對Symfony 2沒有太多的經驗。要創建實體我使用YAML選項。

謝謝。

控制器代碼：

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(), 
    )); 
} 

的CandidateType類：

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', 
     ); 
    } 
} 

實體：

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; 
    } 
} 

Answer 1

在你CandidateType類，字段DOB文本類型，在實體是在日期時間格式 你可以使用這樣的東西

$builder->add('DOB', 'date', array('input' => 'datetime','label'=>'Date of Birth:')); 

請參閱this date Field Type manual