Hi Sven, which error do you get in firebug? Just guessing: could it be that you run into the same origin policy (http://en.wikipedia.org/wiki/Same_origin_policy)? Do the mapserver and the webserver share the same origin?
If not, you'll need a proxy, and OpenLayers provides one for you: http://trac.openlayers.org/wiki/FrequentlyAskedQuestions#ProxyHost If you see a different error, we'll need more details about it. Regards, Marc n 24.08.2010 12:36, Sven Burbeck wrote: > Hi Marc, > thanks for your hint regarding the vendorParams. It at least solves > part of the problem (passing the URl to the constructor didn't work). > I now produce a request that has the "map" parameter and the request > gets a response from the server (format=html). > > However, GeoExt.popup opens but is still blank and doesn't show the html. > Firebug throws an error (just the GET request) although I can take > this request and get a proper response from the server. > > any idea? > > cheers, > Sven > > > > Quoting "Marc Jansen"<jan...@terrestris.de>: > > >> Hi Sven, >> >> The error message you see come from UMN mapserver moaning about the >> missing URL parameter MAP, not the OpenLayers Map. >> >> Have you tried to pass over an URL to the Constructor of the control >> (this isn't documented in the API, but maybe should be)? >> >> featureInfo = new OpenLayers.Control.WMSGetFeatureInfo({ >> url : 'http://example.com/mapserver?map=/path/to/mapfile.map' >> }); >> >> >> If the above fails, you could use the non-API-property "vendorParams" (I >> cannot see a reason why this is a hidden option): >> >> featureInfo = new OpenLayers.Control.WMSGetFeatureInfo({ >> vendorParams: { >> map: '/path/to/mapfile.map' >> } >> }); >> >> If both work, I'd go with the vendorParams, because that is what UMN >> Mapservers MAP url parameter is. >> >> Untested, hope it helps, >> >> Marc >> >> >> >> On 24.08.2010 11:00, Sven Burbeck wrote: >> >>> Hi list, >>> I'm struggling to show GetFeatureInfo results in a GeoExtPopup. >>> I used the sample code for openLayers / GeoExt.popup. >>> That's the code: >>> ... >>> var featureInfo = new OpenLayers.Control.WMSGetFeatureInfo(); >>> featureInfo.events.on({ >>> getfeatureinfo: function(e) { >>> new GeoExt.Popup({ >>> title: "Info", >>> width: 200, >>> height: 150, >>> autoScroll: true, >>> maximizable: true, >>> map: map, >>> lonlat: map.getLonLatFromPixel(e.xy), >>> html: e.text >>> }).show(); >>> } >>> }); >>> >>> map.addControl(featureInfo); >>> featureInfo.activate(); >>> ... >>> My WMS comes from MapServer (and FeatureInfo apparently works on the >>> selected layers). >>> When checking the request (copied from firebug) directly in the browser >>> I get the following error message: >>> 'loadMap(): Web application error. CGI variable "map" is not set.' >>> >>> And that's actually true. When adding the "map" parameter manually >>> everything works well. >>> However, I thought the requests "map" and "layers" parameter were given >>> by "map:map". >>> >>> Maybe I simply missed something but currently I don't know what. >>> >>> >>> cheerrs, >>> Sven >>> >>> >>> >> _______________________________________________ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users
