topic Re: FeatureLayer selectFeatures does not return "features" and "method" in ArcGIS JavaScript Maps SDK Questions

FeatureLayer selectFeatures does not return "features" and "method"

PitersonPaulgek — Tue, 13 Dec 2016 00:59:25 GMT

Hi,

Version 3.17.

We surprised that FeatureLayer selectFeatures() method does not return "features" and "method" - just Array of objects.

And help is not correct

FeatureLayer | API Reference | ArcGIS API for JavaScript 3.18

That means there is a difference to use QueryTask.execute() or FeatureLayer.selectFeatures().

Should we use 3.18?

Any help please.

Re: FeatureLayer selectFeatures does not return "features" and "method"

RobertScheitlin__GISP — Sat, 11 Dec 2021 10:02:28 GMT

Piterson,

Not sure how your code is handling the FeatureLayer.selectFeatures but this sample does return feature and method just fine (I just added a console.info(evt)):

ArcGIS API for JavaScript Sandbox

        censusBlockPointsLayer.on("selection-complete", function(evt) {
          console.info(evt);
          ....‍‍‍

Re: FeatureLayer selectFeatures does not return "features" and "method"

PitersonPaulgek — Tue, 13 Dec 2016 03:41:47 GMT

Robert,

Thank you for the response.

I see.

Please try this

censusBlockPointsLayer.on("selection-complete", function(evt) {
var query = new Query();
query.outFields = ["*"];
query.where = "OBJECTID < 5";

censusBlockPointsLayer.selectFeatures(query, FeatureLayer.SELECTION_NEW, function (featureSet) {
console.info(featureSet);
});
//console.info(evt);
var totalPopulation = sumPopulation(censusBlockPointsLayer.getSelectedFeatures());
var r = "";
r = "<b>The total Census Block population within the drive time polygon is <i>" + totalPopulation + "</i>.</b>";
dom.byId('messages').innerHTML = r;
});

Re: FeatureLayer selectFeatures does not return "features" and "method"

RobertScheitlin__GISP — Tue, 13 Dec 2016 04:26:18 GMT

What is the point in doing a selection inside the response of another selection. Also by adding that, you would be creating an infinite loop in your code, because you are executing a selection inside the selection complete handler event.

Re: FeatureLayer selectFeatures does not return "features" and "method"

PitersonPaulgek — Tue, 13 Dec 2016 05:07:03 GMT

You are right.

Could we do it in

function initFunctionality() {
var query2 = new Query();
query2.outFields = ["*"];
query2.where = "OBJECTID < 5";

censusBlockPointsLayer.selectFeatures(query2, FeatureLayer.SELECTION_NEW, function (featureSet) {
console.info(featureSet);
});

...

};

The print in console is the same: Array of Objects

Re: FeatureLayer selectFeatures does not return "features" and "method"

RobertScheitlin__GISP — Tue, 13 Dec 2016 13:05:49 GMT

Piterson,

OK the difference is that you are using an inline deferred handler verses an on event deferred handler and the return is different by design for these. When you do a inline handler like you are the returned result is only an array of graphics as you would already have access to the selection method.

Re: FeatureLayer selectFeatures does not return "features" and "method"

PitersonPaulgek — Tue, 13 Dec 2016 21:22:42 GMT

Robert,

This makes sense.

Could you please provide an example when we get "features" and "method" from selectFeatures()?

Re: FeatureLayer selectFeatures does not return "features" and "method"

RobertScheitlin__GISP — Sat, 11 Dec 2021 10:02:30 GMT

Piterson,

That was in my very first reply:

        censusBlockPointsLayer.on("selection-complete", function(evt) {
          console.info(evt);
          ....

Re: FeatureLayer selectFeatures does not return "features" and "method"

PitersonPaulgek — Tue, 13 Dec 2016 23:15:59 GMT

Many Thanks, Robert.