Query filter using request routes in Laravel

QueryParameterSearchFilter

<?php

namespace App\Filters\Search;

use Closure;
use Illuminate\Support\Arr;
use Laravel\Scout\Builder;

class QueryParameterSearchFilter
{
    protected const IN_OPERATOR = 'in';

    protected const EQ_OPERATOR = 'eq';

    protected const ALLOWED_OPERATORS = [
        self::EQ_OPERATOR,
        self::IN_OPERATOR,
    ];

    public function handle(Builder $query, Closure $next): Builder
    {
        $queryParameters = Arr::except(\request()->query->all(), 'search');
        foreach ($queryParameters as $queryParameter => $values) {
            foreach ($values as $operator => $value) {
                if (\in_array($operator, self::ALLOWED_OPERATORS) === false) {
                    $next($query);
                    continue;
                }
                $query = $this->resolveQueryGrammar($query, $operator, $queryParameter, $value);
            }
        }

        return $query;
    }

    private function resolveQueryGrammar(
        Builder $query,
        string $operator,
        string $queryParameter,
        mixed $value
    ): Builder {
        return match ($operator) {
            self::EQ_OPERATOR => $query->where($queryParameter, $value),
            default => $query->whereIn($queryParameter, (array) $value)
        };
    }
}