DataMapper ORM v1.8.0

[eluser]WanWizard[/eluser]
That what I said:

If you define a custom validation rule, the field (or column) name can be included in the error message, and can be localized. For example, this is needed if you define an error on the field 'username'. In a german error message, you would like to use 'Benutzername' instead.

So localize_by_label() checks if a translation exists, and the only way to do that is to call $this->lang->line(), and check the result.

I already filed a 'complaint' in the reactor issue (#32) that introduced this new and imho extremely unwanted behaviour, but so far no positive reaction of the Reactor team.