[OpenLayers-Dev] use of GetFeatureInfo with MapServer file

[Roald de Wit]

Hi,

This list is intended for when you *develop* OpenLayers, ie: if you're 
modifying OpenLayers classes, creating subclasses, or otherwise getting 
into the guts of OpenLayers.

Your questions are questions about how to *use* OpenLayers and 
MapServer. Please use the following lists for them:

OpenLayers:
http://lists.osgeo.org/mailman/listinfo/openlayers-users

MapServer:
http://lists.osgeo.org/mailman/listinfo/mapserver-users

Regards, Roald


On 28/09/11 21:05, jcbpro81 wrote:
> Hello everyone,
>
> I'm new with OpenLayers and MapServer.
> I'm looking for a way to get informations on a feature clicked on a map,
> like on the following link :
> http://openlayers.org/dev/examples/getfeatureinfo-control.html
>
> Here is my environment:
> OpenLayers load only one layer of type "OpenLayers.Layer.MapServer".
> The mapfile contains 4 postgis layers, and I want to be able to retrieve
> informations from one of them.
>
> Here is the JavaScript I have for now according to the GetFeatureInfo, code
> found by looking on Google :
>
> -------------------------------------------------------------------------------------------
>
> 	    layer = new OpenLayers.Layer.MapServer("myMap", "url", {map:
> 'file.map'});
> 		
>          map.addLayers([layer]);
>
>          map.events.register('click', map, function(evt) {
>              document.getElementById("infoResult").innerHTML = "Recherche en
> cours..."
>              var url = layer.getFullRequestString({
>                  REQUEST: "GetFeatureInfo",
>                 	EXCEPTIONS: "application/vnd.ogc.se_xml",
>                  STYLES: "",
>                  BBOX: map.getExtent().toBBOX(),
>                  X: evt.xy.x,
>                  Y: evt.xy.y,
>                  QUERY_LAYERS: "myLayer",
>                  FEATURE_COUNT: 1,
>                  WIDTH: map.size.w,
>                  HEIGHT: map.size.h,
>                  INFO_FORMAT: 'text/html'
>              });
>              //alert(url);
>          	OpenLayers.loadURL(url, '', this, setInfoResult);
>           	Event.stop(evt);
>       	});
>
> 	// ....
> 		
> 	function setInfoResult(response) {
>          //alert(response);
> 		document.getElementById("infoResult").innerHTML = response.responseText;
>       }
>
> -------------------------------------------------------------------------------------------
>
> When I click anywhere on the map, the "infoResult" shows "?PNG  " (the
> display is a square next to "PNG" characters).
> So I'm questionning myself on what I'm doing wrong.
> About the QUERY_LAYERS parameter, with value "myLayer", do I have to put the
> name of the layer loaded with OpenLayers ("myMap") or the name of a layer
> inside of my mapfile ("myLayer") ?
> Is this code can work with postgis layers ?
> Do I have to work in another way ?
>
> I find that OpenLayers online help
> (http://dev.openlayers.org/releases/OpenLayers-2.9/doc/apidocs/index/General.html)
> isn't really "user friendly" and hard to understand.
> I spent lot of days to be able to simply display a map.
>
> Any help will be much apprecied.
>
> Thanks in advance.
>
> Regards,
>
> --
> View this message in context: http://osgeo-org.1803224.n2.nabble.com/use-of-GetFeatureInfo-with-MapServer-file-tp6839763p6839763.html
> Sent from the OpenLayers Dev mailing list archive at Nabble.com.
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