Question

我试图用2个实体创建一个简单的OneToMany关联：

<?php
session_start();
$servername = "xxxxx";
$connectioninfo = array(
    'Database' => 'xxxxxxxxxxxxx'
);
$conn = sqlsrv_connect($servername, $connectioninfo);
if (!$conn) {
    echo 'connection failure';
    die(print_r(sqlsrv_errors() , TRUE));
}

$q1 = "select top 10 *
from pointsBadgeTable
WHERE WeekNumber ='week51'
order by pointsRewarded desc";
$stmt = sqlsrv_query($conn, $q1);
if ($stmt == false) {
    echo 'error to retrieve info !! <br/>';
    die(print_r(sqlsrv_errors() , TRUE));
}
do {
    while ($row = sqlsrv_fetch_array($stmt, SQLSRV_FETCH_ASSOC)) {
        $result[] = $row;
    }
}
while (sqlsrv_next_result($stmt));
sqlsrv_free_stmt($stmt);
sqlsrv_close($conn); //Close the connnectiokn first

//Set content type to json
header('Content-Type: application/json');

//Echo a json object to the browser
echo json_encode($result);
?>

和

class Professional extends User
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    public function __construct()
    {
        $this->followers = new \Doctrine\Common\Collections\ArrayCollection();
        $this->following = new \Doctrine\Common\Collections\ArrayCollection();
        $this->degrees = new \Doctrine\Common\Collections\ArrayCollection();
        $this->experiences = new \Doctrine\Common\Collections\ArrayCollection();
    }
...
/**
     * @ORM\OneToMany(targetEntity="ProfessionalDegree", mappedBy="professional", cascade={"persist"})
     */
    private $degrees;
...
**
     * Add degrees
     *
     * @param \AppBundle\Entity\ProfessionalDegrees $degrees
     * @return Professional
     */
    public function addDegree(\AppBundle\Entity\ProfessionalDegree $degrees)
    {
        $this->degrees[] = $degrees;

        return $this;
    }

    /**
     * Remove degrees
     *
     * @param \AppBundle\Entity\ProfessionalDegrees $degrees
     */
    public function removeDegree(\AppBundle\Entity\ProfessionalDegree $degrees)
    {
        $this->degrees->removeElement($degrees);
    }

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

当我尝试使用Type：

创建表单时

/**
 * @ORM\Entity
 * @ORM\Table(name="professional_degree")
 */
class ProfessionalDegree
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    public function __construct()
    {
    }
...

/**
     * @ORM\ManyToOne(targetEntity="Professional", inversedBy="degrees")
     * @ORM\JoinColumn(name="professional_id", referencedColumnName="id")
     */
    private $professional;

...

/**
     * Set professional
     *
     * @param \AppBundle\Entity\Professional $professional
     * @return ProfessionalDegree
     */
    public function setProfessional(\AppBundle\Entity\Professional $professional = null)
    {
        $this->professional = $professional;

        return $this;
    }

    /**
     * Get professional
     *
     * @return \AppBundle\Entity\Professional 
     */
    public function getProfessional()
    {
        return $this->professional;
    }

使用这些DegreeType：

class ProfessionalType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    { 
     $builder
        ->add($builder->create('degrees', CollectionType::class, array(
            'entry_type'   => DegreeType::class,
            'allow_add'    => true,
            'allow_delete' => true,
            'by_reference' => false,
        )));
    }

    public function getParent()
{
    return 'FOS\UserBundle\Form\Type\RegistrationFormType';
}

public function getBlockPrefix()
{
    return 'professional_registration_form';
}

public function getName()
{
    return $this->getBlockPrefix();
}

public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults(array(
        'validation_groups' => array('ProfessionalRegistration'),
        ));
}
}

当我在控制器上处理表单时，新程度将添加到数据库中，但专业人员处于NULL状态。我在Symfony的文档（https://symfony.com/doc/current/form/form_collections.html）中读到它可能是一个'by_reference'问题

有什么想法吗？谢谢。

Answer 1

我建议你做的是在Professional上调用addDegree时手动调用ProfessionalDegrees setProfessional方法：

/**
 * Add degrees
 *
 * @param \AppBundle\Entity\ProfessionalDegrees $degrees
 * @return Professional
 */
public function addDegree(\AppBundle\Entity\ProfessionalDegree $degrees)
{
    $degrees->setProfessional($this);
    $this->degrees[] = $degrees;

    return $this;
}

您还应该在表单中使用cascade_validation，以便通过Professional添加的度数也将被验证

Symfony by_reference不起作用

1 个答案: