I didn't realize originally that you are doing a cascaded WMS layer. I have no idea if QGIS supports cascading 100%, so you may have found a missing feature.
But if the layer is in your Geoserver, you can send the getfeatureinfo request directly to Geoserver. Thanks, Alex On 01/21/2014 07:25 AM, Peter Len wrote: > An interesting update to this...... So the scenario that has not been > working looks something like this: > > OpenLayers --> QGIS Server --> QGIS Project File --> GeoServer --> PostGIS > > I decided to run a test and create a new project file with the same layer > (location_view) but this time create a PostGIS layer rather than a WMS layer > going to GeoServer. In this case, the scenario looks like: > > OpenLayers --> QGIS Server --> QGIS Project File --> PostGIS > > So, given that, it appears that something else might be going on. QGIS > Server does seem to be serving up feature information, but not in all > scenarios. Not sure what the hiccup is between QGIS Server and GeoServer but > I know that URLs from OpenLayers directly to GeoServer for feature info works > fine. > > > -----Original Message----- >> From: Alex Mandel <tech_...@wildintellect.com> >> Sent: Jan 20, 2014 7:49 PM >> To: Peter Len <petera...@earthlink.net>, qgis-user@lists.osgeo.org >> Subject: Re: [Qgis-user] QGIS Server a GetFeatureInfo request problems. Not >> sure what I am missing. >> >> The method I use to troubleshoot these kinds of things involves using >> the Firebug extension in Firefox. Where you can see what the WMS request >> being sent looks like (NET tab), copy and paste it, manipulate it by >> hand until it works and then figure out how to make Openlayers send it >> that way. >> >> Thanks, >> Alex >> >> On 01/20/2014 12:44 PM, Peter Len wrote: >>> Alex - Thanks for the reply. Initially, I was trying to run this test >>> using a project file where I used the "map" parameter in the layer >>> definition. This got the layers to display within OpenLayers but the >>> GetFeatureInfo request was not working. I then went back to having the >>> project file in the QGIS Server's bin directory so that no file name has to >>> be listed. That is the setup I was using in the examples I provided. I >>> went back and ran another test when using a file at some path and used your >>> "vendorParams" example, but the outcome is the same. >>> >>> >>> -----Original Message----- >>>> From: Alex Mandel <tech_...@wildintellect.com> >>>> Sent: Jan 20, 2014 3:34 PM >>>> To: Peter Len <petera...@earthlink.net>, qgis-user@lists.osgeo.org >>>> Subject: Re: [Qgis-user] QGIS Server a GetFeatureInfo request problems. >>>> Not sure what I am missing. >>>> >>>> On 01/20/2014 12:19 PM, Peter Len wrote: >>>>> I am using QGIS Server that is running in my OSGeo Apache web server (on >>>>> Windows 7). Not sure what version the QGIS Server is but it was from the >>>>> latest OSGeo4W installer. I was testing an OpenLayers client to view a >>>>> QGIS Desktop project file over WMS from the QGIS Server. All seems good >>>>> with that. For example, my OpenLayers code to get this looks like: >>>>> >>>>> var url = "http://localhost:8090/qgis/qgis_mapserv.fcgi.exe";; >>>>> var layer = new OpenLayers.Layer.WMS( "Main Layer", url, { >>>>> layers: 'table_poly,location_view', >>>>> format: 'image/png', >>>>> }, >>>>> { >>>>> buffer: 1, >>>>> isBaseLayer: true, >>>>> graphicZIndex: 0, >>>>> } >>>>> ); >>>>> map.addLayers([layer]); >>>>> >>>>> With the above, I can view my layers within OpenLayers. My next test was >>>>> to see if I could get the feature info from items on my layers. I found >>>>> an example of how to make this call in OpenLayers and it looks like: >>>>> >>>>> var info = new OpenLayers.Control.WMSGetFeatureInfo({ >>>>> url: url, >>>>> title: 'Identify features by clicking', >>>>> queryVisible: true, >>>>> eventListeners: { >>>>> getfeatureinfo: function(event) { >>>>> alert("Got feature info"); >>>>> >>>>> } >>>>> } >>>>> }); >>>>> map.addControl(info); >>>>> info.activate(); >>>>> >>>>> When I tried this, I didn't get anything except a spinning cursor. I >>>>> then tried another test to see if that was the correct way to ask for >>>>> feature info so I changed the URL for the layers to get the layers from >>>>> my GeoServer rather than from QGIS Server (the project file got these >>>>> layers initially from GeoServer so we are talking about the same layer >>>>> source). That worked just fine and I was able to get individual feature >>>>> information. After switching back to point to my QGIS Server I started >>>>> to look at the Apache web server logs and the GeoServer output screen. >>>>> The Apache logs didn't list anything related but the GeoServer console >>>>> listed the following: >>>>> >>>> >>>> WMS GetFeatureInfo in OpenLayers does in fact work with QGIS Server with >>>> one trick, vendorParams you need to specify the qgs file to reference. >>>> >>>> infoControls = { >>>> click: new OpenLayers.Control.WMSGetFeatureInfo({ >>>> url: "http://yoursite.com/cgi-bin/qgis_mapserv.fcgi";, >>>> title: 'Identify features by clicking', >>>> layers: [yourlayer], >>>> queryVisible: true, >>>> vendorParams:{map:"/path/to/map/project.qgs"} >>>> }), >>>> >>>> >>>> Thanks, >>>> Alex >>> >>> _______________________________________________ >>> Qgis-user mailing list >>> Qgis-user@lists.osgeo.org >>> http://lists.osgeo.org/mailman/listinfo/qgis-user >>> >> > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user > _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
