A while back I wrote a function with a deferred object that has been working successfully for several months.
This morning, it fails and I am not sure why.
I am using the 3.11 ESRI Javascript Library:
Here is the function call with the deferred object (it is in a helper class, so it can be called over mulitple pages):
addTract: function () {
var d = new Deferred();
var layer = new FeatureLayer(tractFeatureurl, { mode: FeatureLayer.MODE_ONDEMAND, outFields: ["*"] });
layer.setDefinitionExpression("tract_id = " + this.tractid);
this.mapObj.map.addLayer(layer);
this.tracts = layer;
var q = new Query();
q.returnGeometry = true;
q.outFields = ["*"];
var cb = layer.queryFeatures(q);
cb.then(lang.hitch(this, function (results) {
this.tractFeature = results.features[0];
console.debug(this.tractFeature);
this.mapObj.zoomToFeatures(results.features);
d.resolve(this.tractFeature);
return d.promise;
}));
}
It is being class on a page like this:
var res = utils.addTract();
console.debug(res);
if (res == undefined) {
alert("undefined");
return;
}
res.then(function (tract) {
// do more processing....
});
Up until this morning, it was working fine, but now the response back from the addTract function is undefined.
