PropertyAliasSearchFilter.php

<?php

namespace App\Filter;

use ApiPlatform\Core\Api\IriConverterInterface;
use ApiPlatform\Core\Bridge\Doctrine\Orm\Filter\SearchFilter;
use ApiPlatform\Core\Bridge\Doctrine\Orm\Util\QueryNameGeneratorInterface;
use Doctrine\Common\Persistence\ManagerRegistry;
use Doctrine\ORM\QueryBuilder;
use Psr\Log\LoggerInterface;
use Symfony\Component\PropertyAccess\PropertyAccessorInterface;

/**
 * Filters the collection by match, using a property alias.
 */
class PropertyAliasSearchFilter extends SearchFilter
{
    private $aliasedProperties;

    public function __construct(ManagerRegistry $managerRegistry, array $properties, IriConverterInterface $iriConverter, PropertyAccessorInterface $propertyAccessor = null, LoggerInterface $logger = null)
    {
        $this->aliasedProperties = $properties;

        $properties = [];

        foreach ($this->aliasedProperties as $property => $propertyOptions) {
            $properties[$propertyOptions['propertyName']] = $propertyOptions['strategy'];
        }

        parent::__construct($managerRegistry, null, $iriConverter, $propertyAccessor, $logger, $properties);
    }

    /**
     * {@inheritdoc}
     */
    public function getDescription(string $resourceClass): array
    {
        $description = [];

        $properties = $this->aliasedProperties;

        foreach ($properties as $property => $propertyOptions) {
            $description[$property] = [
                'property' => $propertyOptions['propertyName'],
                'type' => 'string',
                'required' => false,
                'strategy' => $propertyOptions['strategy'],
            ];
        }

        return $description;
    }

    /**
     * {@inheritdoc}
     */
    protected function filterProperty(string $property, $value, QueryBuilder $queryBuilder, QueryNameGeneratorInterface $queryNameGenerator, string $resourceClass, string $operationName = null)
    {
        if (!isset($this->aliasedProperties[$property])) {
            return;
        }
        $property = $this->aliasedProperties[$property]['propertyName'];

        parent::filterProperty($property, $value, $queryBuilder, $queryNameGenerator, $resourceClass, $operationName);
    }
}

Hello,

much simpler !!!

?page=1&firstname[exact]=mick

use ApiPlatform\Core\Bridge\Doctrine\Orm\Filter\SearchFilter;
use ApiPlatform\Core\Bridge\Doctrine\Orm\Util\QueryNameGeneratorInterface;
use Doctrine\ORM\QueryBuilder;

class SearchStrategyFilter extends SearchFilter
{
    protected function filterProperty(string $property, $value, QueryBuilder $queryBuilder, QueryNameGeneratorInterface $queryNameGenerator, string $resourceClass, string $operationName = null)
    {
        if (!is_array($value)) {
            return;
        }

        $first = array_key_first($value);

        if (!in_array($first, [
            self::STRATEGY_EXACT,
            self::STRATEGY_PARTIAL,
            self::STRATEGY_START,
            self::STRATEGY_END,
            self::STRATEGY_WORD_START,
        ])) {
            return;
        }

        $this->properties = [$property => $first];
        $value = $value[$first];

        parent::filterProperty($property, $value, $queryBuilder, $queryNameGenerator, $resourceClass, $operationName);
   }
}