[Seaside] chained WATasks need to be in #children?

Michal michal-list at auf.net
Sat Feb 19 09:03:17 UTC 2011

bump. Anyone?

> I stumbled upon this surprising property of WATask in Seaside3 today (because it broke my old code): chaining two 
> tasks works only if the second is returned by #children (though non-tasks don't need to be returned by #children). 
> Could someone confirm this, and maybe explain it? Here is a much simplified scenario to reproduce the issue:
> Task1>>go
> 	self call: Task2 new
> Task2>>go
> 	self inform: Time now printString
> The above doesn't work, failing with WATaskNotDelegated. This on the other hand works:
> Task>>go
> 	self call: Component new
> Component>>renderContentOn: html
> 	html heading: Time now printString
> Furthermore, as soon as Task1 is modified to answer the Task2 instance in its #children, the first example starts 
> working (regardless of whether it is the same Task2 instance across calls, or a new one on each cycle). 
> So it looks like "chained tasks count as children components" and must be declared as such in #children, while 
> "chained non-task components do not count as children components" (and hence do not need to be answered in 
> #children). I couldn't find any info on that in tutorials or googles, so: is that right? And if so, why is there 
> this asymmetry?
> thanks, 
> Michal
> _______________________________________________
> seaside mailing list
> seaside at lists.squeakfoundation.org
> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside

More information about the seaside mailing list