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From Vilya Harvey <>
Subject Re: [cForms] Errors coming from service layer
Date Mon, 14 Mar 2005 14:36:01 GMT
Reinhard Poetz wrote:

> Thank you!
> This means that the service layer is aware of which widgets exist? I'm 
> not sure if I (and especially my customer) likes this bi-directional 
> dependency ...

I agree it's a bad idea for the service layer to know about the widgets. 
In our case there's a fairly simple correspondence between error types 
and widgets, so we're able to infer it all in the UI layer. For more 
complicated cases I could imagine using some kind of mapping, along the 
same sort of lines as the form bindings. I haven't tried that out, so I 
don't know how well it would work in practice.

BTW, the code to set a validation error on a widget looks like:

var myWidget = form.lookupWidget("...");
var myError = new;

(hope that doesn't get word-wrapped...)


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