Symfony 约束以防止重叠时间范围内的重复

Question

如何使用 Doctrine ORM 在 Symfony 中的重叠日期范围内强制值的唯一性。

我有以下实体

<?php
/**
 * @ORM\Entity
 * @ORM\Table("tax_component")
 */

class TaxComponent
{
    /**
     * @ORM\Id()
     * @ORM\GeneratedValue()
     * @ORM\Column(name="tax_component_id", type="integer")
     */
    private ?int $id;

    /**
     * @ORM\Column(name="tax_component_name", type="string", length=20)
     */
    private string $name;

    /**
     * @ORM\Column(name="tax_component_rate", type="integer")
     * @Assert\GreaterThanOrEqual(0)
     */
    private int $rate;

    /**
     * @ORM\Column(name="tax_component_applicable_from", type="datetime_immutable")
     */
    private DateTimeInterface $applicableFrom;

    /**
     * @ORM\Column(name="tax_component_applicable_to", type="datetime_immutable")
     */

    public function __construct(string $name, int $rate, ?DateTimeImmutable $applicableFrom = null, ?DateTimeImmutable $applicableTo = null)
    {
        ...
    }

}

我想让 $name 在 $applicableFrom 和 $applicableTo 重叠的时间范围内独一无二。例如，

$repository->save(
    new TaxComponent('inter-state', 1800, new DateTime('2018-04-01:00:00:00'), new DateTime('2019-03-31T23:59:59'))
);

// The following should be allowed since there is no overlap between the two time ranges using the name 'inter-state'
$repository->save(
    new TaxComponent('inter-state', 1200, new DateTime('2019-04-01:00:00:00'), new DateTime('2020-03-31T23:59:59'))
);

// The following should fail since 'inter-state' is ambiguous during the period 2019-09-01:00:00:00 to 2020-03-31T23:59:59
$repository->save(
    new TaxComponent('inter-state', 1800, new DateTime('2019-09-01:00:00:00'), new DateTime('2020-09-31T23:59:59'))
);

Symfony 是否有强制执行的约束？

我正计划在调用 $this->entityManager->persist 之前检查 TaxComponentRepository::save 中的现有实体。有更好的解决方案吗？

Answer 1

更简洁的方法是创建您自己的自定义断言。

从创建约束开始：

<?php

namespace App\Validator\Constraints;

use Symfony\Component\Validator\Constraint;

/**
 * @Annotation
 */
class TaxComponentConstraint extends Constraint
{
    public $message = 'Another tax component overlap this one: {{ taxComponent}}';

    public function getTargets()
    {
        return self::CLASS_CONSTRAINT;
    }

    public function validatedBy()
    {
        return 'App\Validator\Constraints\TaxComponentValidator';
    }
}

现在您必须创建一个验证器来检查是否存在与两个税项的重叠。

<?php

namespace App\Validator\Constraints;

use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;

class TaxComponentValidator extends ConstraintValidator
{
    public function validate($taxComponentObject, Constraint $constraint)
    {
    //Check however you want if the tax component can be created (So no overlap between two existing TaxComponent)
    if($overlappingTaxComponent){
        $this->context->buildViolation($constraint->message)
                        ->setParameter('{{ taxComponent }}', $overlappingTaxComponent->__toString())
                        ->addViolation();
    }

    }
}

此处，$overlappingTaxComponent 是一个 TaxComponent，由于您的限制，我们无法制作。

如果约束正确完成，您现在可以在您的实体中轻松使用它，以便它在提交表单时自动检查：

<?php

//...
use App\Validator\Constraints as CustomAssert;

/**
 * @ORM\Entity
 * @ORM\Table("tax_component")
 * @CustomAssert\TaxComponentConstraint
 */
class TaxComponent
{
    /**
     * @ORM\Id()
     * @ORM\GeneratedValue()
     * @ORM\Column(name="tax_component_id", type="integer")
     */
    private ?int $id;

    /**
     * @ORM\Column(name="tax_component_name", type="string", length=20)
     */
    private string $name;

Symfony 约束以防止重叠时间范围内的重复

Symfony constraint to prevent duplicates in overlapping time frame

mysql

symfony

doctrine-orm