Magritte Validation Error

[Lukas Renggli]

> No, it is the call to isKindOf from the super class that is  
> failing, the call to includes works fine.  My project class does  
> implement #= and hash, and uses a UUID string for identity.  self  
> kind is resolving to Class class, since isKindOf is being sent to  
> anObject, that should resolve the proxy, so perhaps something is  
> wrong with:

Ok.

> descriptionProject
>     ^(MASingleOptionDescription selector: #project label: 'Project'  
> priority: 10)
>         reference: MAClassDescription new;
>         options: (MADynamicObject on: [ TMProject repository  
> asArray]);
>         beRequired; beSorted ;
>         yourself
>
> MAClassDescription seems wrong, looking now, I see why isKindOf is  
> failing, I'm not filling the dropdown with classes, but I don't see  
> what's appropriate, without it I get MessageNotUnderstood:  
> TMProject>>do:.  So how do I use other domain objects in a  
> SingleOptionDescription rather than just a simple list of symbols  
> or strings?

Yep, that's true. MAClassDescription expects a class. I have never  
put a single description into a MASingleOptionDescription yet, so I  
didn't encouter this problem yet.

I don't know, but I would try

descriptionProject
     ^(MASingleOptionDescription selector: #project label: 'Project'  
priority: 10)
         reference: TMProject description;
         options: (MADynamicObject on: [ TMProject repository asArray]);
         beRequired; beSorted ;
         yourself

Else a possibility might be to create a new description, say a null- 
object pattern MAUnknownDescription that wouldn't validate the  
referenced object.

Another thing that I am not entirely sure about at the moment is, if  
the referenced object should be validated at all? I mean, currently  
MASingleOptionDescription does its validation, e.g. is the selected  
entry one of the items of the list, and then passes it to the  
reference ... probably that should happen somewhere else :-/

Lukas

-- 
Lukas Renggli
http://www.lukas-renggli.ch