[Seaside] #urlForDocument: w/o canvas?

Sebastian Sastre ssastre at seaswork.com
Wed Oct 15 14:08:54 UTC 2008

Hi Udo,

For elegance you can make that dictionary to be in an inst var of your wrapper
component and in the render method json that instvar (presumably with a proper
That way could potentially be changed in any calback and then render properly
according to that.
Make some convenience accessors and you're done,


Sebastian Sastre
PD: that, of course, if I understood you right ;)

> -----Mensaje original-----
> De: seaside-bounces at lists.squeakfoundation.org 
> [mailto:seaside-bounces at lists.squeakfoundation.org] En nombre 
> de Udo Schneider
> Enviado el: Miércoles, 15 de Octubre de 2008 08:00
> Para: seaside at lists.squeakfoundation.org
> Asunto: [Seaside] #urlForDocument: w/o canvas?
> All,
> I'm a bit confused about #urlForDocument: in a non-render method.
> Background: I'm having a component (SwfObject) which wraps 
> the SWFObject 
> .js library. This component gets initialized in my Application:
> initialize
>    super initialize.
>    swf := (SwfObject new)
>      alternativeContent: [:html | html text: 'Flash is being loaded'];
>      extent: 640 @ 480;
>      url: OFCFileLibrary / #openflashchartSwf;
>      yourself
> In the render code of my app I render this component. However 
> the flash 
> needs a reference to some content using #urlForDocument: . So 
> I need to 
> set this in the render method:
> renderContentOn: html
>    swf
>      variables: ((Dictionary new)
>        at: 'data-file' put: (html context urlForDocument: self data);
>        yourself) jsonString.
>    html render: swf
> This works w/o problem. However the data does not change from 
> render to 
> render. So what I would like to do is to set the #variables: in 
> #initielize as well - however this is not possible because I need 
> #urlForDocument: which is only available through the canvas?
> My bad gut feeling comes from the point that I do not want to change 
> components during render - only as a result of an action. At 
> this point 
> I have no choice but to do it?
> So I'm asking myself whether it is possible to get an URL for 
> a document 
> outside of the render run - maybe a URL to a (delayed) MIMEDocument 
> which gets it's content via a pluggable block?
> I would love to do something like this in #initialize.
> swf variables: ((Dictionary new)
>      at: 'data-file' put: (self urlForDelayedDocument: [self data]);
>      yourself) jsonString.
> Any pointers?
> Thanks,
> Udo
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