Question

我有选择字段的symfony表单。我想从我的实体类静态方法加载选择。我可以使用数据还是CallbackChoiceLoader？什么是最佳做法？

这是我的领域：

        class CarType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder
        ->add('type', ChoiceType::class, [
            // This choices I would like to load from:
            // 'choices' => $car::getTypes(),
            'choices'       => [
                'Critical'  => 'critical',
                'Medium'    => 'medium',
                'Info'      => 'info',
            ],
            'label'         => 'Type'
        ])
        ->add('name', TextType::class, [
            'label' => 'Name'
        ])
        ->add('save', SubmitType::class, [
            'label' => 'Save'
        ])
    ;
}

public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults([
        'data_class' => 'AppBundle\Entity\Car'
    ]);
}

public function getName()
{
    return 'car';
}
}

这是我的实体：

/**
 * @ORM\Entity
 * @ORM\Table(name="car")
 */
class Car
{
/**
 * @var integer
 *
 * @ORM\Column(name="id", type="integer", nullable=false)
 * @ORM\Id
 * @ORM\GeneratedValue(strategy="IDENTITY")
 */
private $id;

/**
 * @var string $type
 *
 * @Assert\NotBlank()
 * @ORM\Column(name="type")
 */
private $type;

/**
 * @var string $name
 *
 * @Assert\NotBlank()
 * @ORM\Column(name="name")
 */
private $name;

/**
 * @var \DateTime $created
 *
 * @ORM\Column(name="created", type="datetime")
 */
private $created;

private static $types = ['main', 'custom'];

public function __construct()
{
    $this->created = new \DateTime('now', new \DateTimeZone('Europe/Ljubljana'));
}

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

/**
 * Get types
 * 
 * @return array
 */
public function getTypes()
{
    return self::$types;
}

/**
 * Set type
 *
 * @param string $type
 *
 * @return Car
 */
public function setType($type)
{
    if (in_array($type, $this->getTypes())) {
        $this->type = $type;
    }

    return $this;
}

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

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

    return $this;
}

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

/**
 * Set created
 *
 * @param \DateTime $created
 *
 * @return Car
 */
public function setCreated($created)
{
    $this->created = $created;

    return $this;
}

/**
 * Get created
 *
 * @return \DateTime
 */
public function getCreated()
{
    return $this->created;
}

如何以及我可以使用什么来加载来自$ car :: getTypes（）方法的选择，就像我在表单中注释一样，以便根据getTypes实体方法中的值动态加载选项？

Answer 1

编辑：这是选项1.下面的选项2更直接地回答了问题。

从实体创建选择表单字段的首选方法是使用EntityType字段。以下是需要种族领域的应用程序的示例。下面是种族实体。

表单字段：

->add('ethnicity', EntityType::class, array(
    'label' => 'Ethnicity:',
    'class' => 'AppBundle:Ethnicity',
    'choice_label' => 'abbreviation',
    'expanded' => false,
    'placeholder' => 'Select ethnicity',
    'query_builder' => function (EntityRepository $er) {
        return $er->createQueryBuilder('e')
                ->orderBy('e.abbreviation', 'ASC')
        ;
    },
))

种族实体：

/**
 * Ethnicity.
 *
 * @ORM\Table(name="ethnicity")
 * @ORM\Entity
 */
class Ethnicity
{
    /**
     * @var int
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="IDENTITY")
     */
    protected $id;

    /**
     * @var string
     *
     * @ORM\Column(name="ethnicity", type="string", length=45, nullable=true)
     */
    protected $ethnicity;

    /**
     * @var string
     *
     * @ORM\Column(name="abbr", type="string", length=45, nullable=true)
     */
    protected $abbreviation;

    /**
     * @var \Doctrine\Common\Collections\Collection
     *
     * @ORM\OneToMany(targetEntity="AppBundle\Entity\Member", mappedBy="ethnicity", cascade={"persist"})
     */
    protected $members;

    /**
     * Constructor.
     */
    public function __construct()
    {
        $this->members = new \Doctrine\Common\Collections\ArrayCollection();
    }

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

    /**
     * Set ethnicity.
     *
     * @param string $ethnicity
     *
     * @return Ethnicity
     */
    public function setEthnicity($ethnicity)
    {
        $this->ethnicity = $ethnicity;

        return $this;
    }

    /**
     * Get ethnicity.
     *
     * @return string
     */
    public function getEthnicity()
    {
        return $this->ethnicity;
    }

    /**
     * Set abbreviation.
     *
     * @param string $abbreviation
     *
     * @return Ethnicity
     */
    public function setAbbreviation($abbreviation)
    {
        $this->abbreviation = $abbreviation;

        return $this;
    }

    /**
     * Get abbreviation.
     *
     * @return string
     */
    public function getAbbreviation()
    {
        return $this->abbreviation;
    }

    /**
     * Add members.
     *
     * @param \AppBundle\Entity\Member $members
     *
     * @return Ethnicity
     */
    public function addMember(\AppBundle\Entity\Member $members)
    {
        $this->members[] = $members;

        return $this;
    }

    /**
     * Remove members.
     *
     * @param \AppBundle\Entity\Member $members
     */
    public function removeMember(\Truckee\ProjectmanaBundle\Entity\Member $members)
    {
        $this->members->removeElement($members);
    }

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

    /**
     * @var bool
     *
     * @ORM\Column(name="enabled", type="boolean", nullable=true)
     */
    protected $enabled;

    /**
     * Set enabled.
     *
     * @param bool $enabled
     *
     * @return enabled
     */
    public function setEnabled($enabled)
    {
        $this->enabled = $enabled;

        return $this;
    }

    /**
     * Get enabled.
     *
     * @return bool
     */
    public function getEnabled()
    {
        return $this->enabled;
    }
}

选项2：如果你真的想这样做，那么这就是一种方法：

修改您的静态属性$types，以便选项是数组中的值，例如$types = array(1 => 'main', 2 => 'custom')
在您的控制器中，为Car实体添加一个use语句。
在控制器操作中：

$car = new Car();

$types = $car->getTypes;
使用Passing data to buildForm() in Symfony 2.8/3.0的答案来了解如何将$types传递给您的表单。

将选项加载到实体方法

1 个答案: