On Fri, Oct 2, 2009 at 11:00 PM, Christian Schanz
<[email protected]> wrote:
> Hello,
>
> I need a function that returns a featurecollection which is created
> from a GeoJSON.
> So I think that I need to do something like the following:
>
> function getGeoJSON() {
> var featurecollection;
> function handler(request) {
> //TODO: What to do here?
> }
> var request = OpenLayers.Request.GET( {
> url: "http://path/to/my/GeoJSON";,
> callback: handler
> });
> return featurecollection;
> }
>
> But how exactly should the handler look like?
> I have tried to add something like
> featurecollection = request.responseText;
> to the handler but then I get no features returned at all.
>
> And as a second question: Should my GeoJSON generating server insert a
> mime-type at the beginning of the
> response or is this not needed?
I'd recommend using a protocol. Something like this:
var protocol = new OpenLayers.Protocol.HTTP({
url: "url-to-geojson",
format: new OpenLayers.Format.GeoJSON()
});
protocol.read({
callback: function(response) {
if(response.success()) {
var features = response.features;
console.log(features);
} else {
console.log("failure");
}
}
});
Hope this helps,
--
Eric Lemoine
Camptocamp France SAS
Savoie Technolac, BP 352
73377 Le Bourget du Lac, Cedex
Tel : 00 33 4 79 44 44 96
Mail : [email protected]
http://www.camptocamp.com
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