Thanks to Arnd and Dane, this is what works:
I first create the layer:
function cropsreturn(cropsresponse) {
crop_style.strokeColor = "#ff0000";
if (cropsresponse.responseText.indexOf('Error') != -1) {
window.alert("no crops");
crops = new OpenLayers.Layer.Vector("Crop areas",
{isBaseLayer: false,
style: crop_style,
extractAttributes: true });
map.addLayer(crops);
map.zoomToMaxExtent();
}
else {
crops = new OpenLayers.Layer.Vector("Crop areas",
{isBaseLayer: false,
style: crop_style,
extractAttributes: true });
crops.addFeatures(geojson_format.read(cropsresponse.responseText));
map.addLayer(crops);
map.zoomToExtent(crops.getDataExtent());
}
}
//later:
crops.onFeatureInsert = function(feature) {
feature.attributes.prop0 = 'new'; //This should be modified to
get actual primary key
window.alert("New crop area inserted");
}
Robert
>>> "Arnd Wippermann" <[EMAIL PROTECTED]> 16/10/2008 6:44 a.m. >>>
Hi Robert,
perhaps this is a way
register 'featureadded' for the vector layer
* - *featureadded* Triggered after a feature is added. The event
* object passed to listeners will have a *feature* property with a
* reference to the added feature.
crop_layer.events.register('featureadded', crop_layer, regFeatureAdded);
function regFeatureAdded()
{
this.attributes['name'] = 'name';
this.attributes['description'] = 'description';
}
but I have it not tested.
Arnd Wippermann
Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Robert Sanson
Gesendet: Mittwoch, 15. Oktober 2008 05:46
An: [email protected]
Betreff: [OpenLayers-Users] Adding an attribute field to a vector layer
I am developing an application that allows a user to digitise crop areas. The
areas created will then be uploaded to a SQL-server database via a geoJSON
string sent to a ColdFusion service.
How can I specify one or more attribute fields?
I am using the following construct:
var crop_layer = new OpenLayers.Layer.Vector();
map.addLayer(crop_layer);
Many thanks,
Robert Sanson
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