PHP code example of ngmy / specification

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

ngmy / specification example snippets

declare(strict_types=1);

use Ngmy\Specification\AbstractSpecification;

/**
 * Popular user specification.
 *
 * @extends AbstractSpecification<User>
 */
class PopularUserSpecification extends AbstractSpecification
{
    /**
     * {@inheritdoc}
     */
    public function isSatisfiedBy($candidate): bool
    {
        return $candidate->getVotes() > 100;
    }
}

$spec = new PopularUserSpecification();
$spec->isSatisfiedBy($user);

$spec = new PopularUserSpecification();
$popularUsers = array_filter(function (User $users) use ($spec): void {
    return $spec->isSatisfiedBy($user);
}, $users);

use Illuminate\Contracts\Database\Eloquent\Builder;

/**
 * {@inheritdoc}
 */
public function applyToEloquent(Builder $query): void
{
    $query->where('votes', '>', 100);
}

$query = User::query(); // User is your Eloquent model
$spec = new PopularUserSpecification();
$spec->applyToEloquent($query);
$popularUsers = $query->get();

use Doctrine\ORM\QueryBuilder;
use Ngmy\Specification\Support\DoctrineUtils;

/**
 * {@inheritdoc}
 */
public function applyToDoctrine(QueryBuilder $queryBuilder): void
{
    $queryBuilder->andWhere($queryBuilder->expr()->gt(
        DoctrineUtils::getRootAliasedColumnName($queryBuilder, 'votes'),
        DoctrineUtils::createUniqueNamedParameter($this, $queryBuilder, 100),
    ));
}

/** @var \Doctrine\ORM\EntityManager $entityManager */
$queryBuilder = $entityManager->createQueryBuilder();
$queryBuilder->select('u')->from(User::class, 'u'); // User is your Doctrine entity
$spec = new PopularUserSpecification();
$spec->applyToDoctrine($queryBuilder);
$popularUsers = $queryBuilder->getQuery()->getResult();

$spec1 = new Specification1();
$spec2 = new Specification2();
$spec3 = $spec1->and($spec2);

$spec1 = new Specification1();
$spec2 = new Specification2();
$spec3 = $spec1->or($spec2);

$spec1 = new Specification1();
$spec2 = $spec1->not();