我有两个实体，即 Quiz 和 QuizQuestion，具有多对多单向关系。我想以测验形式嵌入问题形式。我在 2.0 分支上。我可以开始sonata_type_model工作，在下拉列表中获取 id 列表，并使用“添加”按钮。但是，尝试使用时出现错误sonata_type_admin：
Neither property "title" nor method "getTitle()" nor method "isTitle()" exists in class "Doctrine\ORM\PersistentCollection"
500 Internal Server Error - InvalidPropertyException
这是我的测验实体：
<?php
namespace Some\SiteBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
/**
* Some\SiteBundle\Entity\Quiz
* @ORM\Table(name="quiz")
* @ORM\Entity(repositoryClass="Some\SiteBundle\Entity\QuizRepository")
*/
class Quiz
{
/**
* @var integer $id
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @ORM\Column(type="datetime", name="created_at")
*
* @var DateTime $createdAt
*/
protected $createdAt;
/**
* @var string $title
*
* @ORM\Column(name="title", type="string", length=255)
*/
private $title;
/**
* @var string $body
*
* @ORM\Column(name="body", type="text")
*/
private $body;
/**
* @var QuizQuestion questions
* @ORM\ManyToMany(targetEntity="QuizQuestion", cascade={"persist", "remove"} )
**/
protected $questions;
public function __construct() {
$this->questions = new ArrayCollection();
$this->createdAt = new \DateTime();
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set title
*
* @param string $title
*/
public function setTitle($title)
{
$this->title = $title;
}
/**
* Get title
*
* @return string
*/
public function getTitle()
{
return $this->title;
}
/**
* Get quiz body.
*
* @return string body
*/
public function getBody()
{
return $this->body;
}
/**
* Sets body
*
* @param string $value body
*/
public function setBody($body)
{
$this->body = $body;
}
/**
* Gets an object representing the date and time the quiz was created.
*
* @return DateTime A DateTime object
*/
public function getCreatedAt()
{
return $this->createdAt;
}
/**
* Add questions
*
* @param Some\SiteBundle\Entity\QuizQuestion $questions
*/
public function addQuestion(\Some\SiteBundle\Entity\QuizQuestion $question)
{
$this->questions[] = $question;
}
/**
* set question
*
* @param Some\SiteBundle\Entity\QuizQuestion $questions
*/
public function setQuestion(\Some\SiteBundle\Entity\QuizQuestion $question)
{
foreach ($this->questions as $doc) {
$this->questions->removeElement($doc);
}
$this->questions[] = $question;
}
/**
* Get questions
*
* @return Doctrine\Common\Collections\Collection
*/
public function getQuestions()
{
return $this->questions;
}
/**
* @ORM\PrePersist
*/
public function beforePersist()
{
//$this->setCreatedAt(new \DateTime());
//$this->setModifiedAt(new \DateTime());
}
public function __toString()
{
return 'Quiz';
}
}
和 QuizQuestion 实体：
<?php
namespace Some\SiteBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
/**
* Some\SiteBundle\Entity\QuizQuestion
* @ORM\Table(name="quiz_question")
* @ORM\Entity
*/
class QuizQuestion
{
/**
* @var integer $id
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @ORM\Column(type="datetime", name="created_at")
*
* @var DateTime $createdAt
*/
protected $createdAt;
/**
* @var string $title
*
* @ORM\Column(name="title", type="string", length=255)
*/
private $title;
/**
* @var string $body
*
* @ORM\Column(name="body", type="text")
*/
private $body;
/**
* @var string $answer1
*
* @ORM\Column(name="answer1", type="text")
*/
private $answer1;
/**
* @var string $answer2
*
* @ORM\Column(name="answer2", type="text")
*/
private $answer2;
/**
* @var string $answer3
*
* @ORM\Column(name="answer3", type="text")
*/
private $answer3;
/**
* @var string $answer4
*
* @ORM\Column(name="answer4", type="text")
*/
private $answer4;
/**
* @var string $correctAnswer
*
* @ORM\Column(name="correct_answer", type="integer", length="1")
*/
private $correctAnswer;
public function __construct() {
$this->createdAt = new \DateTime();
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set title
*
* @param string $title
*/
public function setTitle($title)
{
$this->title = $title;
}
/**
* Get title
*
* @return string
*/
public function getTitle()
{
return $this->title;
}
/**
* Get question body.
*
* @return string body
*/
public function getBody()
{
return $this->body;
}
/**
* Sets body
*
* @param string $value body
*/
public function setBody($body)
{
$this->body = $body;
}
/**
* Get question answer1.
*
* @return string answer1
*/
public function getAnswer1()
{
return $this->answer1;
}
/**
* Sets answer1
*
* @param string $value answer1
*/
public function setAnswer1($answer1)
{
$this->answer1 = $answer1;
}
/**
* Get question answer2.
*
* @return string answer2
*/
public function getAnswer2()
{
return $this->answer2;
}
/**
* Sets answer2
*
* @param string $value answer2
*/
public function setAnswer2($answer2)
{
$this->answer2 = $answer2;
}
/**
* Get question answer3.
*
* @return string answer3
*/
public function getAnswer3()
{
return $this->answer3;
}
/**
* Sets answer3
*
* @param string $value answer3
*/
public function setAnswer3($answer3)
{
$this->answer3 = $answer3;
}
/**
* Get question answer4.
*
* @return string answer4
*/
public function getAnswer4()
{
return $this->answer4;
}
/**
* Sets answer4
*
* @param string $value answer4
*/
public function setAnswer4($answer4)
{
$this->answer4 = $answer4;
}
/**
* Get question correctAnswer.
*
* @return string correctAnswer
*/
public function getCorrectAnswer()
{
return $this->correctAnswer;
}
/**
* Sets answer1
*
* @param string $value correctAnswer
*/
public function setCorrectAnswer($correctAnswer)
{
$this->correctAnswer = $correctAnswer;
}
/**
* Gets an object representing the date and time the question was created.
*
* @return DateTime A DateTime object
*/
public function getCreatedAt()
{
return $this->createdAt;
}
public function __toString()
{
return $this->title;
}
}
以及相关的管理课程。测验管理员第一：
<?php
namespace Some\SiteBundle;
use Some\SiteBundle\Form\QuizQuestionType;
use Sonata\AdminBundle\Admin\Admin;
use Sonata\AdminBundle\Datagrid\ListMapper;
use Sonata\AdminBundle\Datagrid\DatagridMapper;
use Sonata\AdminBundle\Validator\ErrorElement;
use Sonata\AdminBundle\Form\FormMapper;
use Sonata\AdminBundle\Show\ShowMapper;
use Symfony\Component\HttpFoundation\File\File;
use Symfony\Component\HttpFoundation\Request;
class QuizAdmin extends Admin
{
protected function configureFormFields(FormMapper $formMapper)
{
$formMapper
->add('title', NULL, array('label' => 'tytuł:'))
->add('body', NULL, array('label' => 'opis:', 'required' => false, 'attr' => array(
'class' => 'tinymce', 'data-theme' => 'simple')
))
->add('questions', 'sonata_type_admin', array(), array('required' => false, 'edit' => 'inline'));
//->add('categories', NULL, array('label' => 'kategorie:'))
;
}
protected function configureDatagridFilters(DatagridMapper $datagridMapper)
{
$datagridMapper
->add('title')
->add('body')
;
}
protected function configureListFields(ListMapper $listMapper)
{
$listMapper
->addIdentifier('id')
->add('title')
->add('_action', 'actions', array(
'actions' => array(
'view' => array(),
'edit' => array(),
)
))
//->add('body')
;
}
public function validate(ErrorElement $errorElement, $object)
{
$errorElement
->with('title')
->assertMinLength(array('limit' => 2))
->end()
;
}
}
和 QuizQuestionAdmin：
<?php
namespace Some\SiteBundle;
use Some\SiteBundle\Form\QuizQuestionType;
use Sonata\AdminBundle\Admin\Admin;
use Sonata\AdminBundle\Datagrid\ListMapper;
use Sonata\AdminBundle\Datagrid\DatagridMapper;
use Sonata\AdminBundle\Validator\ErrorElement;
use Sonata\AdminBundle\Form\FormMapper;
use Sonata\AdminBundle\Show\ShowMapper;
use Symfony\Component\HttpFoundation\File\File;
use Symfony\Component\HttpFoundation\Request;
class QuizAdmin extends Admin
{
protected function configureFormFields(FormMapper $formMapper)
{
$formMapper
->add('title', NULL, array('label' => 'tytuł:'))
->add('body', NULL, array('label' => 'opis:', 'required' => false, 'attr' => array(
'class' => 'tinymce', 'data-theme' => 'simple')
))
->add('questions', 'sonata_type_admin', array(), array('required' => false, 'edit' => 'inline'));
//->add('categories', NULL, array('label' => 'kategorie:'))
;
}
protected function configureDatagridFilters(DatagridMapper $datagridMapper)
{
$datagridMapper
->add('title')
->add('body')
;
}
protected function configureListFields(ListMapper $listMapper)
{
$listMapper
->addIdentifier('id')
->add('title')
->add('_action', 'actions', array(
'actions' => array(
'view' => array(),
'edit' => array(),
)
))
//->add('body')
;
}
public function validate(ErrorElement $errorElement, $object)
{
$errorElement
->with('title')
->assertMinLength(array('limit' => 2))
->end()
;
}
}
我尝试将 quizQuestion 注册为服务，但后来我得到了Expected argument of type "Festus\SiteBundle\Entity\QuizQuestion", "Doctrine\ORM\PersistentCollection" given
500 Internal Server Error - UnexpectedTypeException
经过几个小时的查找后找不到任何解决方案...