[fusion-users] Show Layer added in MapScript

[Tom van der Putte]

Hi
paul,
 Thanks for the code! I had had almost everything, except the
$oMap->save($_SESSION['maps'][$mapName]); part, which turned out to be
sort of critical ;). It works now.
 But your explanation about  changing the mapfile structure led me to
wondering if my idea is the right way to go.
 I'm trying to create a simple raster querying tool that allows user
to show only those portions of a geological depth map that are above
or below a certain (user-defined) level, while also retaining the
original raster in the TOC. I was planning to do this by (in
Mapscript) creating a copy of the relevant raster, and by adding a
classification (non-relevant pixels -> transparent) showing the result
of the query. 
 But I'd like to be sure that I'm changing only the map for the
current user/session, and not for other users who are using the
mapserver at that time. Will this do the trick?
 Cheers,
 Tom
 On Thu 11/03/10 16:52 , Paul Spencer pspencer at dmsolutions.ca sent:
 Hi Tom,
 The fusion framework makes a temporary copy of the original map file
for use in the current user's session so that it can be manipulated
without affecting other users.  If you want to change the map file
structure in some way, you need to make an ajax call to a server side
script and then reload the map on the client side (which you are
already doing obviously.  The ajax request must include the map name,
typically the javascript would look something like this:
 myFunction: function() {
     var map = Fusion.getMapByIndice(0); // a reference to a
mapserver map
     var url = 'path/to/my/php/script.php'; // correct URL to your
php script
     var params = {
       mapname: map._sMapname,
       session: map.getSessionID(),
       myparam: 'some value' // add all the parameters you want to
send as key: value pairs
     };
     var options = {
       onSuccess: OpenLayers.Function.bind(map.reloadMap, map),
       parameters: params
     };
     Fusion.ajaxRequest(url, options);
 }
 you need to be doing something like this on the server side:
 include ("/path/to/fusion/layers/MapServer/php/Common.php");
 if (isset($_SESSION['maps']) && isset($_SESSION['maps'][$mapName]))
{
     $oMap = ms_newMapObj($_SESSION['maps'][$mapName]);
     $myparam = $_REQUEST['myparam'];
     // your code that manipulates $oMap
     $oMap->save($_SESSION['maps'][$mapName]);
 }
 ?>
 That's pretty much the simplest way to implement what you need to do
I think.  Does that make sense?
 Cheers
 Paul
 On 2010-03-11, at 10:18 AM, Tom van der Putte wrote:
 > Hi Paul,
 > 
 > I was doing 3), but  that's about it. Could you give me some
pointers on how to do do 1) and 2)?
 > 
 > Cheers,
 > Tom
 > 
 > 
 > 
 > On Thu 11/03/10 16:09 , Paul Spencer  sent:
 > are you:
 > 
 > 1) modifying the session copy of the map file
 > 2) saving the session copy of the map file after modification
 > 3) reloading the map on the client side
 > 
 > Cheers
 > 
 > Paul
 > 
 > On 2010-03-11, at 9:26 AM, Tom van der Putte wrote:
 > 
 > > Hi All,
 > > 
 > > I have a map with several layergroups, and want to make a copy
of a user-picked layer in a group by doing an ajax call to a PHP
Mapscript. This script executes $oMap->insertLayer($oLayer). This
works perfectly in the PHP Mapscript environment
($oMap->getAllLayerNames() shows all layers including the copy). But
when the ajax call returns, the layer has not been added to the map.
Any ideas why this is? 
 > > 
 > > Cheers,
 > > Tom
 > > _______________________________________________
 > > fusion-users mailing list
 > > 
 > > http://lists.osgeo.org/mailman/listinfo/fusion-users
 > 
 > 
 > __________________________________________
 > 
 > Paul Spencer
 > Chief Technology Officer
 > DM Solutions Group Inc
 > http://research.dmsolutions.ca/
 > 
 > 
 __________________________________________
    Paul Spencer
    Chief Technology Officer
    DM Solutions Group Inc
    http://research.dmsolutions.ca/
 
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