[OpenLayers-Users] Control.WMSGetFeatureInfo styles are "undefined"

[Andreas Hocevar]

Hi,

On Wed, Jun 24, 2009 at 3:48 PM, Frank Broniewski<brfr at metrico.lu> wrote:
> I have a problem with my Mapserver WMS server and the
> OpenLayers.Control.WMSGetFeatureInfo. When the query url is constructed by
> Control.WMSGetFeatureInfo, the styles parameter is a list of "undefined"
> styles: styles=undefined,undefined,undefinded,undefined. And my mapserver
> chokes on the "undefined". Looking at the example
> http://www.openlayers.org/dev/examples/getfeatureinfo-control.html the styles
> parameter is empty. How can I achieve that?

You have found a bug. Please follow the instructions on
http://trac.openlayers.org/wiki/FilingTickets to create a bug report.

But in the meantime, I have a workaround for you:

> // the WMS layer
>        var strasse = new OpenLayers.Layer.WMS (
>                                strasse_layername,      routes_url,
>                                { layers: ['autorouten','radwege','wanderwege','pois'], format:
> 'image/png', transparent: true },

change the above to
                               { layers:
['autorouten','radwege','wanderwege','pois'], styles: ['','','',''],
format:
'image/png', transparent: true },

>                                { isBaseLayer: false, singleTile: true } );
>
> // the WMSGetFeatureInfo control
>    var infoControls = { click: new OpenLayers.Control.WMSGetFeatureInfo(
>                { url: routes_url,
>                  title: 'Identify features by clicking',
>                  layers: [strasse],
>                  queryVisible: true,
>                  infoFormat: 'application/vnd.ogc.gml' } ) };
>    infoControls['click'].events.register("getfeatureinfo", this, showInfo);
>    map.addControl(infoControls['click']);

Regards,
Andreas.

-- 
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.