Question

我正在尝试创建一个具有2个实体和这两个实体之间的OneToMany关系的小型CRUD系统。

我的实体是位置＆amp;工作。我创建了实体并通过doctrine创建了crud控制器。

位置CRUD效果很好，但仅限工作阅读＆amp;删除有效。当我尝试创建一个新的Job时，会引发以下异常：

Catchable Fatal Error：类DataBundle \ Entity \ Location的对象无法转换为字符串

我不知道它的意义或原因是什么。

如果有人能帮助我，那真是太棒了！

非常感谢提前！

这是我的代码。

实体：

位置

<?php

namespace DataBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;

/**
 * Location
 *
 * @ORM\Table(name="location")
 * @ORM\Entity(repositoryClass="DataBundle\Repository\LocationRepository")
 */
class Location
{
    /**
     * @var int
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @var string
     *
     * @ORM\Column(name="name", type="string", length=255)
     */
    private $name;

    /**
     * @var string
     *
     * @ORM\Column(name="street", type="string", length=255)
     */
    private $street;

    /**
     * @var string
     *
     * @ORM\Column(name="number", type="string", length=25)
     */
    private $number;

    /**
     * @var string
     *
     * @ORM\Column(name="postalcode", type="string", length=4)
     */
    private $postalcode;

    /**
     * @var string
     *
     * @ORM\Column(name="city", type="string", length=255)
     */
    private $city;

    /**
     * @var Job[] Available jobs for this location.
     *
     * @ORM\OneToMany(targetEntity="Job", mappedBy="location")
     */
    private $jobs;

    public function __construct()
    {
        $this->jobs = new ArrayCollection();
    }

    /**
     * Get id
     *
     * @return integer
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * Set name
     *
     * @param string $name
     *
     * @return Location
     */
    public function setName($name)
    {
        $this->name = $name;

        return $this;
    }

    /**
     * Get name
     *
     * @return string
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * Set street
     *
     * @param string $street
     *
     * @return Location
     */
    public function setStreet($street)
    {
        $this->street = $street;

        return $this;
    }

    /**
     * Get street
     *
     * @return string
     */
    public function getStreet()
    {
        return $this->street;
    }

    /**
     * Set number
     *
     * @param string $number
     *
     * @return Location
     */
    public function setNumber($number)
    {
        $this->number = $number;

        return $this;
    }

    /**
     * Get number
     *
     * @return string
     */
    public function getNumber()
    {
        return $this->number;
    }

    /**
     * Set postalcode
     *
     * @param string $postalcode
     *
     * @return Location
     */
    public function setPostalcode($postalcode)
    {
        $this->postalcode = $postalcode;

        return $this;
    }

    /**
     * Get postalcode
     *
     * @return string
     */
    public function getPostalcode()
    {
        return $this->postalcode;
    }

    /**
     * Set city
     *
     * @param string $city
     *
     * @return Location
     */
    public function setCity($city)
    {
        $this->city = $city;

        return $this;
    }

    /**
     * Get city
     *
     * @return string
     */
    public function getCity()
    {
        return $this->city;
    }

    /**
     * Add job
     *
     * @param \DataBundle\Entity\Job $job
     *
     * @return Location
     */
    public function addJob(\DataBundle\Entity\Job $job)
    {
        $this->jobs[] = $job;

        return $this;
    }

    /**
     * Remove job
     *
     * @param \DataBundle\Entity\Job $job
     */
    public function removeJob(\DataBundle\Entity\Job $job)
    {
        $this->jobs->removeElement($job);
    }

    /**
     * Get jobs
     *
     * @return \Doctrine\Common\Collections\Collection
     */
    public function getJobs()
    {
        return $this->jobs;
    }
}

作业：

<?php

namespace DataBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * Job
 *
 * @ORM\Table(name="job")
 * @ORM\Entity(repositoryClass="DataBundle\Repository\JobRepository")
 */
class Job
{
    /**
     * @var int
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;


    /**
     * @var string
     *
     * @ORM\Column(name="title", type="string", length=255)
     */
    private $title;

    /**
     * @var string
     *
     * @ORM\Column(name="description", type="string", length=255)
     */
    private $description;

    /**
     * @var Location
     *
     * @ORM\ManyToOne(targetEntity="Location", inversedBy="jobs")
     * @ORM\JoinColumn(name="location_id", referencedColumnName="id")
     */
    private $location;

    /**
     * Get id
     *
     * @return integer
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * Set title
     *
     * @param string $title
     *
     * @return Job
     */
    public function setTitle($title)
    {
        $this->title = $title;

        return $this;
    }

    /**
     * Get title
     *
     * @return string
     */
    public function getTitle()
    {
        return $this->title;
    }

    /**
     * Set description
     *
     * @param string $description
     *
     * @return Job
     */
    public function setDescription($description)
    {
        $this->description = $description;

        return $this;
    }

    /**
     * Get description
     *
     * @return string
     */
    public function getDescription()
    {
        return $this->description;
    }

    /**
     * Set location
     *
     * @param \DataBundle\Entity\Location $location
     *
     * @return Job
     */
    public function setLocation(\DataBundle\Entity\Location $location = null)
    {
        $this->location = $location;

        return $this;
    }

    /**
     * Get location
     *
     * @return \DataBundle\Entity\Location
     */
    public function getLocation()
    {
        return $this->location;
    }
}

我在JobController中的新动作：

    /**
     * Creates a new job entity.
     *
     */
    public function newAction(Request $request)
    {
        $job = new Job();
        $form = $this->createForm('DataBundle\Form\JobType', $job);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $em = $this->getDoctrine()->getManager();
            $em->persist($job);
            $em->flush($job);

            return $this->redirectToRoute('job_show', array('id' => $job->getId()));
        }

        return $this->render('job/new.html.twig', array(
            'job' => $job,
            'form' => $form->createView(),
        ));
    }

DataBundle /形式/ JobTypep

<?php

namespace DataBundle\Form;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class JobType extends AbstractType
{
    /**
     * {@inheritdoc}
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('title')->add('description')->add('location')        ;
    }

    /**
     * {@inheritdoc}
     */
    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'DataBundle\Entity\Job'
        ));
    }

    /**
     * {@inheritdoc}
     */
    public function getBlockPrefix()
    {
        return 'databundle_job';
    }
}

Answer 1

您不能在表单中使用location作为文本字段，位置是对象。

您可以使用表单数据转换器修复此错误，该表单数据转换器将位置转换为表单输出上的文本和表单提交中位置对象中的文本。

http://symfony.com/doc/current/form/data_transformers.html

或者使用表单类型EnityType作为位置：

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder->add('title')->add('description');

    $builder
        ->add('location', Symfony\Bridge\Doctrine\Form\Type\EntityType::class, [
            'required' => false,
            'expanded' => false,
            'multiple' => false,
            'class' => 'DataBundle\\Entity\\Location',
            'empty_data' => '',
            'choice_label' => 'name',
            'label' => 'Location',
        ]);
}

http://symfony.com/doc/current/reference/forms/types/entity.html

Symfony Catchable致命错误：类DataBundle \ Entity \ Location的对象无法转换为字符串

1 个答案: