animethemes-server/app/Rules/Api/IsValidBoolean.php

<?php

declare(strict_types=1);

namespace App\Rules\Api;

use Closure;
use Illuminate\Contracts\Validation\ValidationRule;
use Illuminate\Translation\PotentiallyTranslatedString;

/**
 * Class IsValidBoolean.
 */
class IsValidBoolean implements ValidationRule
{
    /**
     * Run the validation rule.
     *
     * @param  string  $attribute
     * @param  mixed  $value
     * @param  Closure(string): PotentiallyTranslatedString  $fail
     * @return void
     */
    public function validate(string $attribute, mixed $value, Closure $fail): void
    {
        if (filter_var($value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE) === null) {
            $fail(__('validation.boolean'));
        }
    }
}