AppException

Pair framework: AppException

Pair\Exceptions\AppException is intended for front-end web application errors.

It extends PairException and triggers user-facing notifications.

Constructor behavior

__construct(string $message, int $code = 0, ?Throwable $previous = null):

• for CSRF_TOKEN_INVALID, shows a modal prompting page reload
• otherwise triggers generic front-end error notification via PairException::frontEnd()
• logs via parent exception behavior

Implementation example

use Pair\Exceptions\AppException;
use Pair\Exceptions\ErrorCodes;

if (!$isValidCsrf) {
    throw new AppException('Invalid CSRF token', ErrorCodes::CSRF_TOKEN_INVALID);
}

See also: PairException, CriticalException, ErrorCodes.