[Deprecated] DMZ 1.5.3 (DataMapper OverZealous Edition)

[eluser]OverZealous[/eluser]
[quote author="pdswan" date="1249940900"]This effectively sets the error message, but also results in an extra error message of 'Unable to access an error message corresponding to your rule name: attempt_upload.'[/quote]

Well, I feel stupid %-P

The (current) correct way to set a custom error message without getting the extra "not found" message is to return TRUE or return nothing. If you set an error message, the validation routine will fail.

The drawback to this is that the rest of the validation tests are still run.

So, I'm still going to try out adding the ability to return a string to cause a validation to fail while setting a custom error message. For now, though, just don't return anything (or return true), but go ahead and set the custom message.