[Seaside] trouble with callbacks

[Jason Rogers]

I took your advice and made it a ShoreTask and everything works fine.  Thanks.

On 8/1/05, Julian Fitzell <julian at beta4.com> wrote:
> Yes, lazy initialization can cause problems because of when the
> snapshots are taken and rolled back.  You may find your component rolled
> back to a point before the variable was initialized again.
> 
> But more important is the fact that you are using #call: from within
> your render method which is a no-no.  You will often see #call: inside a
> render method but it should always be within a callback block which
> won't actually be executed until the next execution phase.  Once we have
> begun rendering, the component tree has been determined and calling out
> to another component causes problems.
> 
> It seems like what you want here is a task.  Create a subclass of WATask
> and add a #go method.  In the #go method, you can have conditional
> application logic and calls out to several other components to do work
> for you (the final one being, presumably, a call to your batched list
> component).  Seems like that should be closer to what you are trying to
> achieve...
> 
> Julian
> 
> Ramon Leon wrote:
> > I have a feeling that your renderContentOn is somehow changing state,
> > that call to the criteriaComponent at the top concerns me, seems that if
> > you're building up the list each time, that you can't page next because
> > each render builds up a whole new list of items, destroying the last
> > list that was rendered.
> >
> >
> >>-----Original Message-----
> >>From: seaside-bounces at lists.squeakfoundation.org
> >>[mailto:seaside-bounces at lists.squeakfoundation.org] On Behalf
> >>Of Jason Rogers
> >>Sent: Monday, August 01, 2005 11:59 AM
> >>To: The Squeak Enterprise Aubergines Server - general discussion.
> >>Subject: Re: [Seaside] trouble with callbacks
> >>
> >>On 7/29/05, Ramon Leon <rleon at insario.com> wrote:
> >>
> >>>Show code.
> >>
> >>renderMyContentOn: html
> >>      | itemView |
> >>      viewFilter := self getViewFilterFor:  (self call: self
> >>criteriaComponent)
> >>      itemView := self viewFilter view.
> >>      itemView isEmptyOrNil
> >>              ifTrue:
> >>                      [html divClass: #content with: [html
> >>text: 'None']]
> >>              ifFalse:
> >>                      [bacthedListTableComponent
> >>tableHeaders: (self gatherHeadersFrom: itemView).
> >>                      [bacthedListTableComponent data: itemView.
> >>                      html render: [bacthedListTableComponent].
> >>
> >>criteriaComponent
> >>      "answer a ShoreComponent that will be used to set my
> >>searchCriteria"
> >>      criteriaComponent
> >>              ifNil: [criteriaComponent := self
> >>criteriaComponentClass parent: self;
> >>                                               label: self filterName;
> >>                                               yourself].
> >>      ^ criteriaComponent
> >>
> >>
> >>--
> >>Jason Rogers
> >>
> >>"I am crucified with Christ: nevertheless I live; yet not I,
> >>but Christ liveth in me: and the life which I now live in the
> >>flesh I live by the faith of the Son of God, who loved me,
> >>and gave himself for me."
> >>    Galatians 2:20
> >>_______________________________________________
> >>Seaside mailing list
> >>Seaside at lists.squeakfoundation.org
> >>http://lists.squeakfoundation.org/listinfo/seaside
> >>
> >
> > _______________________________________________
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> > http://lists.squeakfoundation.org/listinfo/seaside
> 
> --
>    Julian Fitzell  --  Beta4 Productions
> julian at beta4.com  --  http://www.beta4.com
> Seaside: http://seaside.st/
> _______________________________________________
> Seaside mailing list
> Seaside at lists.squeakfoundation.org
> http://lists.squeakfoundation.org/listinfo/seaside
> 


-- 
Jason Rogers

"I am crucified with Christ: nevertheless I live; yet not I,
but Christ liveth in me: and the life which I now live in 
the flesh I live by the faith of the Son of God, who loved 
me, and gave himself for me."
    Galatians 2:20