[OpenLayers-Users] getFeatureInfo

[Brent Pedersen]

this might be useful. [ requires ows_include_items to be set in the mapfile ]

OpenLayers.Layer.WMS.prototype.getFeatureInfoURL = function(e /*,info_format*/){
            var x = e.xy.x
            var y = e.xy.y

            var url = this.getURL(this.map.getExtent())
                    .replace(/getMap/i,'getFeatureInfo');

            var ms = this.map.getCurrentSize();
            var format = arguments.length > 1 ? arguments[1] : 'text/plain'
            url += '&x=' + x + '&y=' + y
                    + '&QUERY_LAYERS=' + this.params.LAYERS
                    + '&INFO_FORMAT=' + format;
            url = url.replace(/&width=[^&\?$]+/i,'&WIDTH=' + ms.w)
                     .replace(/&height=[^&\?$]+/i,'&HEIGHT=' + ms.h)
            return url
};

example:

map.events.register('click',mapquery);

function mapquery(evt){
    var url = muni.getFeatureInfoURL(evt);
    OpenLayers.loadURL(url,{},this,function(req){
              alert(req.responseText)
     });
}


my test page here:
http://giifweb.cnr.berkeley.edu/fire/wind/gfi/gfi.html