Yes, I knew about #description on the instance side, but my question was
not precise enough. I wanted an on-the-fly description for the
collection so that the MAReport is dynamically configured.
I finally got the desired behavior simply by subclassing
MAOneToManyComponent and re-implementing #reference. This also gave me
the possibility to offer a UI on the description for hiding/showing
columns in the report. Magritte is really cool.
Thanks,
Michel.
> -----Original Message-----
> From:
smallwiki-bounces@...
> [mailto:
smallwiki-bounces@...] On Behalf Of Lukas Renggli
> Sent: vendredi, 21. mars 2008 18:33
> To: Magritte, Pier and Related Tools ...
> Subject: Re: Instance based description in Magritte
>
> > The description of the objects in class B needs to be
> instance based.
> > All the objects in one collection have the same
> description, however
> > class B is not able to provide a description.
> >
> You can override #description on the instance side to either
> build your descriptions on the fly or to modify the ones
> returned by the class. For example:
>
> B>>description
> ^ super description collect: [ :each |
> (each isKindOf: MAToManyDescription)
> ifTrue: [ each copy classes: self dynamicClasses ]
> ifFalse: [ each ] ]
>
> You find many other possible solutions in the mailing-list
> archive and some additional information in the FAQ:
>
>
http://www.lukas-renggli.ch/smalltalk/magritte/faq>
> Lukas
>
> --
> Lukas Renggli
>
http://www.lukas-renggli.ch>
>
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