Hi :)
I try to use a MARelationDescription with an object that fetch its
description automatically from instances... and I have a problem...
To illustrate, let's take the Magritte tutorial example with 2 model
classes MAPersonModel and MAAdressModel.
In MAPersonModel we have an inst var homeAdress with the corresponding
description on the class side:
MAPersonModel class>>descriptionHomeAddress
^ (MAToOneRelationDescription auto: 'homeAddress' label: 'Home
Address' priority: 40)
componentClass: MAInternalEditorComponent;
classes: (Array with: MAAddressModel);
yourself.
and that is enough because MAAdressModel has its descriptions defined
(class side). But if descriptions were accessed from instance of
MAAdressModel like:
MAAdressModel>>descriptionGenerated
^MAPriorityDescription new add: (MAStringDescription auto:
'street' label: 'Street' priority: 10);
add:
(MAStringDescription auto: 'place' label: 'Place' priority: 30);
...
yourself.
Then I was thinking it was possible to create the previous description
in the following way (say there are no more desciption in the class side
of MAAdressModel):
MAPersonModel class>>descriptionHomeAddress
^ (MAToOneRelationDescription auto: 'homeAddress' label: 'Home
Address' priority: 40)
***reference: MAAdessModel new descriptionGenerated;***
componentClass: MAInternalEditorComponent;
classes: (Array with: MAAddressModel); *no more description in
the class side of MAAddressModel*
yourself.
I know in this exemple, the interest of doing that is not obvious but
this is because in my case, I have specific description for instances
(one part is general whereas the other is created with values affected
to the object).
Is it possible to do that way ?
what is the correct use of #reference: for a MARelationDescription ?
choosing a kind of container ?
Is there a built-in way to use different descriptions (filtered for
instance) than the one accessed from the classe that are in ToOne or
ToMany relation ?
Thank you
Cédrick
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