[Chameleon] Architectural Advice

[Abe Gillespie]

It's been a while since I've done this but you need to save the
updated map back into Chameleon.  Otherwise Chameleon drops all the
runtime added settings and layers.

I think it's somewhere in a Chameleon class that wraps the map.
Sorry, I'm away from my Chameleon dev environment at the moment.

-Abe

On 4/6/07, anthony farrant <anthony.k.farrant at gmail.com> wrote:
> Yeah. Nice example. That's more or less what I'm trying to achieve.
>
> I'm playing with dynamic layers for the moment. Inserting code between
> the initialize and execute.
>
> $oApp =  new Mapper();
>  $oApp->registerSkin( 'skins/sample' );
> $oApp->CWCInitialize( $szTemplate, $szMapFile  );
> if ($action_type == "1") {
>     $oApp->addLayer("New",$points,'FF0000','point',4);
> }
> $oApp->CWCExecute();
>
> where $action_type is a GET variable and $points a coordinate array.
>
> The problem with this solution is that at each refresh of the page (zoom,
> update, etc)
> it creates a new layer. The layer dissapears too when you refresh the page
> without
> the action_type in the URL.
>
> What I'm seeking to do is create session layers. Is there anyway to do this?
>
> Thanks for your advice guys,
>
> Anthony
>
>
>
>
> On 4/5/07, Julien-Samuel Lacroix <jlacroix at mapgears.com> wrote:
> > Hi,
> > I the Chameleon samples you have a lot of examples using the existing
> > widgets. What you are trying to do is probably what the WMSBrowser
> > widget is doing in the OGC sample. Is it possible?
> > Julien
> >
> > anthony farrant wrote:
> > > Thanks. I'll try that out, Bart.
> > >
> > > In the meanwhile I'm trying to implement dynamic layers in Chameleon.
> > > Do you know where I can start to find info about this? The doc on the
> WEB
> > > site doesn't seem to contain a lot.
> > > The layer would be created accroding to user input through a popup form.
> > > Possible?
> > > I'm pretty much familiar with PHP/Mapscript
> > > but not yet with the dynamics of Chameleon. Any links to tutorials are
> > > welcome.
> > >
> > > Regards,
> > >
> > > Anthony
> > >
> > >
> > >
> > > On 4/4/07, *Bart van den Eijnden (OSGIS)* <bartvde at osgis.nl
> > > <mailto: bartvde at osgis.nl>> wrote:
> > >
> > >     If you only use WMS client layers in Chameleon, this should be
> > >     possible (if
> > >     I understand your problem correctly).
> > >
> > >     Best regards,
> > >     Bart
> > >
> > >     --
> > >     Bart van den Eijnden
> > >     OSGIS, Open Source GIS
> > >     http://www.osgis.nl
> > >
> > >
> > >     --------- Oorspronkelijk bericht --------
> > >     Van: anthony farrant < anthony.k.farrant at gmail.com
> > >     <mailto:anthony.k.farrant at gmail.com>>
> > >     Naar: chameleon at lists.maptools.org
> > >     <mailto:chameleon at lists.maptools.org> < chameleon at lists.maptools.org
> > >     <mailto:chameleon at lists.maptools.org>>
> > >     Onderwerp: [Chameleon] Architectural Advice
> > >     Datum: 04/04/07 06:46
> > >
> > >      > Hello,I&#39;d like to use chameleon to build our GIS web app but
> > >     have to
> > >     cope with a major difficulty:Our website is physically and logically
> > >     separated from our GIS server runningMapserver and Chameleon
> (different
> > >     cities &amp; networks). This implies that every change induced
> > >      > by the user has to be tranferred to the GIS server which sends
> > >     back the
> > >     answer (the map).Until now I have used a custom PHP/Mapscript
> > >     application
> > >     but I would like to benefit from theChameleon framework to build
> > >     nicer and
> > >     more functional applications.
> > >      > For the moment all the command logic is situated on the web
> > >     server which
> > >     handles requestsand then sends appropriate data to the GIS server to
> > >     build
> > >     the map. When the map returnsthe web server updates it&#39;s
> > >     internal info
> > >     (extent) and presents the map. All the databases
> > >      > are situated on the webserver so the GIS is only used for map
> > >     generation.
> > >     I understand that this would not be possible with Chameleon since it
> > >     handles
> > >     both commandlogic and map generation. I was wondering if any of you
> > >     has had
> > >     to deal with such a situation before and if you
> > >      > have found a lasting solution for it.CHeers,Anthony
> > >      >
> > >      >
> > >      >
> > >      >
> > >      >
> > >      > _______________________________________________
> > >      > Chameleon mailing list
> > >      > Chameleon at lists.maptools.org
> <mailto:Chameleon at lists.maptools.org>
> > >      >
> http://lists.maptools.org/mailman/listinfo/chameleon
> > >      >
> > >
> > >
> > >
> > >
> > >
> > >
> ------------------------------------------------------------------------
> > >
> > > _______________________________________________
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> > > Chameleon at lists.maptools.org
> > > http://lists.maptools.org/mailman/listinfo/chameleon
> >
> > --
> > Julien-Samuel Lacroix
> > Mapgears
> > http://www.mapgears.com/
> >
>
>
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