//Example Using Assert Collection 

use Symfony\Component\Validator\Constraints as Assert;

use App\Validator as AcmeAssert; //import

new Assert\Collection([

'product_id' => [

    new Assert\NotBlank(),

    new Assert\Type('integer'),

    new AcmeAssert\TableRecordExists(Product::class)

],

​

//Example RouteParam exists

new AcmeAssert\TableRecordExists(OrderProduct::class, [

 'id' => $this->getRouteParam('orderProductId')

]);

//src/Validator/TableRecordExists

​

<?php

​

namespace App\Validator;

​

use Symfony\Component\Validator\Constraint;

​

/**

 * @Annotation

 * @Target({"PROPERTY", "METHOD", "ANNOTATION"})

 */

#[\Attribute(\Attribute::TARGET_PROPERTY | \Attribute::TARGET_METHOD | \Attribute::IS_REPEATABLE)]

class TableRecordExists extends Constraint

{

    public string $message = 'The value "{{ value }}" is not valid.';

    public string $table = '';

    public ?string $id = null;

    public function __construct(string $table, $options = null, array $groups = null, $payload = null)

    {

        $options['table'] = $table;

        parent::__construct($options, $groups, $payload);

    }

​

    /**

     * @return string

     */

    public function getDefaultOption(): string

    {

        return 'table';

    }

​

    /**

     * @return string[]

     */

    public function getRequiredOptions(): array

    {

        return ['table'];

    }

}

​

​

//src/Validator/TableRecordExistsValidator

​

<?php

​

namespace App\Validator;

​

use Doctrine\ORM\EntityNotFoundException;

use Doctrine\Persistence\ManagerRegistry;

use Symfony\Component\Validator\Constraint;

use Symfony\Component\Validator\ConstraintValidator;

use Symfony\Component\Validator\Exception\UnexpectedTypeException;

​

class TableRecordExistsValidator extends ConstraintValidator

{

​

    private ManagerRegistry $managerRegistry;

​

    public function __construct(ManagerRegistry $managerRegistry)

    {

        $this->managerRegistry = $managerRegistry;

    }

​

    /**

     * @throws EntityNotFoundException

     */

    public function validate($value, Constraint $constraint)

    {

        if (!$constraint instanceof TableRecordExists) {

            throw new UnexpectedTypeException($constraint, TableRecordExists::class);

        }

​

        if (null === $value || '' === $value) {

            $this->context->buildViolation($constraint->message)

                ->setParameter('{{ value }}', $value)

                ->addViolation();

        } else {

            if (is_null($this->managerRegistry->getRepository($constraint->table)->findOneBy([

                'id' => $value ?? $constraint->id

            ]))) { //Entity mevcut degilse exception firlatilir

                throw (new EntityNotFoundException())::fromClassNameAndIdentifier($constraint->table, [$value]);

            }

        }

    }

}