Is there a file that defines error messages?

Question

I would like to catch some exceptions to inspect the error code and determine if I should re-throw it with a more user friendly message. This would probably be most beneficial with MySQL errors. Is there a file of defined constants I could leverage for use in my component? Or, does everyone just hard-code the numeric value and/or create their own constants?

Answer 1

You should use Exceptions to handle the error and your message.

If you are supporting both J2.5 and J3.x+ you can handle the error on a per-version case.

if (JError::$legacy) {
    // Use legacy error handling
} else {
    // Use PHP exception handling
}

here is an example from the CMS of the kind of thing your trying to do.

Answer 2

If PHP has a built-in exception handler, then that's used. Otherwise if a developer has created something to handle exceptions, that's used.

If you're unhappy with an existing exception handler, you can always extend it to make it more robust.

http://php.net/manual/en/language.exceptions.extending.php

Answer 3

in your template directory, there is a file error.php that you can modified to show more appropriate info on your errors.