Ah yes. Thank you. Of course that's exactly where I should've looked! Still sometimes forget that I can dig into any part of a Smalltalk system and find answers for myself ;)

-------- Original message --------
From: "DiegoLont [via Smalltalk]" <[hidden email]>
Date: 10/09/2013 10:35 AM (GMT-05:00)
To: "Sean P. DeNigris" <[hidden email]>
Subject: Re: Default depending on container

Hi Sean,

I think I understand your problem. You need to create your custom ToManyComponent and override the "add" message. The basic implementation is:

add
self root
show: (self validatedFormOn: self selected new)
onAnswer: [ :result |
result isNil
ifFalse: [ self value: (self value copyWith: result); refresh ] ]

The "self selected new" you want to change into something you want. Perhaps it would be nicer if this is replaced by a hook, having the default implementation of add:

add
self root
show: (self validatedFormOn: self newInstance)
onAnswer: [ :result |
result isNil
ifFalse: [ self value: (self value copyWith: result); refresh ] ]

newInstance
^self selected new

And then override the newInstance. But in all cases you need a custom ToManyComponent that makes sure it creates the correct instance.

Cheers,
Diego

On Oct 9, 2013, at 2:04 PM, Sean P. DeNigris wrote:

> Cameron Sanders wrote
>> Perhaps I am misunderstanding and solving a different problem..
>
> I think so :p The problem I'm having is: when I open a Magritte editor on
> aParent, I get a button "Add" to add a new object to the toMany collection.
> This opens up a Magritte editor on a new instance of whatever class was
> selected from #classes:. My problem is that I don't know how to link this
> new instance up to parent. There doesn't seem to be a hook to partially
> initialize toMany objects...
>
>
>
> -----
> Cheers,
> Sean
> --
> View this message in context: http://forum.world.st/Default-depending-on-container-tp4712877p4713437.html
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Cheers,
Sean

View this message in context: Re: Default depending on container
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