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<?php
namespace StellarWP\Validation\Rules;
use Closure;
use StellarWP\Validation\Contracts\Sanitizer;
use StellarWP\Validation\Contracts\ValidatesOnFrontEnd;
use StellarWP\Validation\Contracts\ValidationRule;
use const FILTER_NULL_ON_FAILURE;
class Boolean implements ValidationRule, ValidatesOnFrontEnd, Sanitizer
{
/**
* {@inheritDoc}
*
* @since 1.4.0
*/
public static function id(): string
{
return 'boolean';
}
/**
* {@inheritDoc}
*
* @since 1.4.0
*/
public static function fromString(string $options = null): ValidationRule
{
return new self();
}
/**
* {@inheritDoc}
*
* @since 1.4.1 add is_bool check and FILTER_NULL_ON_FAILURE flag to prevent false positives
* @since 1.4.0
*/
public function __invoke($value, Closure $fail, string $key, array $values)
{
if (!is_bool(filter_var($value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE))) {
$fail(sprintf(__('%s must be a boolean', '%TEXTDOMAIN%'), '{field}'));
}
}
/**
* {@inheritDoc}
*
* @since 1.4.0
*/
public function serializeOption()
{
return null;
}
/**
* {@inheritDoc}
*
* @since 1.4.0
*/
public function sanitize($value)
{
return filter_var($value, FILTER_VALIDATE_BOOLEAN);
}
}
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