[Seaside] hand-written javascript in Ajax

[Chris Dawson]

Lukas,

Thank you.  I got it working.  I will definitely read further in the
documentation.

Ah, coding in Seaside is like going from painting with blocks of wood to
creating a Mona Lisa.  Seaside code is pure art.

Chris

On Thu, Jun 5, 2008 at 2:05 AM, Lukas Renggli <renggli at gmail.com> wrote:

> > I have a marker on the map which houses a link with an onclick handler
> > called 'addLocation( "123456" );'.   So, I tried to define addLocation
> like
> > this:
> >
> >                 html script: (' function addLocation( theId ) { ', ((
> >                          html updater
> >                         id: 'locations';
> >                         callback: [ :v |
> >                             locations add: ( myLocation new title: v ).
> >                             self renderLocationsOn: html.
> >                              ]
> >                         value: (SUStream on: 'theId')) asJavascript ), ';
> }'
> > ).
> >                         ]
> >                     ]
> >
> > This crashes my updater.  It does pass the value of theId properly as
> this
> > is stored into the MyLocation collection.  But, it seems I need an html
> > object renderer passed back to me.
>
> You should not render within #callback:value:. Use a
> rendering-callback to update your page.
>
> Furthermore, pay attention that 'html' is not valid anymore (this html
> stream has been sent out when the script was generated) when the
> callback is triggered. Use the renderer that gets passed into the
> render-callback. Slime detects that kind of problems.
>
> html updater
>   id: 'locations';
>   callback: [ :v | locations add: v ] value: 'something';
>   callback: [ :r | self renderLocationsOn: r ].
>
> Please check out the class comments in SUAjax and subclasses. Also the
> methods #callback:value: and #callback: are heavily documented.
>
> Cheers,
> Lukas
>
> --
> Lukas Renggli
> http://www.lukas-renggli.ch
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>
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