topic Re: Attributes not included in HitTestResult in ArcGIS JavaScript Maps SDK Questions

Attributes not included in HitTestResult

ShaneBuscher1 — Thu, 22 Aug 2019 19:34:59 GMT

I'm performing a MapView.hitTest() against a feature layer in a webmap and running across inconsistencies with attributes being returned. I get a reference to the feature layer and set the outFields I want returned. However, sometimes the graphic that is 'hit' only returns the ObjectId. Other times it returns all attributes specified in outFields.

view.on("click", function (event) {

view.hitTest(event).then(function (response) {

if (response.results.length) {

var graphic = response.results.filter(function (result) {

return result.graphic.layer === myLayer;

})[0].graphic;

// graphic.attributes only contains objectid
// OR
// graphic.attributes contains objectid, att1, att2, att3, etc...

}

});

What is the expected behavior? For instance, should you assume that you may only get back an ObjectId and not additional attributes set through FeatureLayer.outFields? Does hitTest ignore outFields?

Re: Attributes not included in HitTestResult

ShaneBuscher1 — Sun, 12 Dec 2021 16:06:09 GMT

After some deeper digging the answer lies in the Loadable pattern. Below is the solution where each feature layer in the web map has its outFields property set to 'all' with the splat. The 'load' function initializes the feature layers the way I need BEFORE adding to the mapView. The issue I had earlier dealt with a lazy-loaded component that was setting the outFields AFTER the webMap and mapView instances had loaded and rendered.

let mapView = new MapView({ 
  container: 'mapEl',
});

let webMap = new WebMap(props);

webMap.load()
 .then(() => {
   webMap.layers
     .filter(layer => { return layer.type === 'feature' })
     .map(layer => {
       let featLayer = <esri.FeatureLayer>layer; 
       featLayer.outFields = ['*'];
       return featLayer; 
     });
 });
 
mapView.map = webMap;

Re: Attributes not included in HitTestResult

rogenjh — Fri, 30 Jul 2021 20:14:34 GMT

😎 saved my butt late on a Friday!

Re: Attributes not included in HitTestResult

TimDietz — Tue, 10 Oct 2023 15:34:19 GMT

Thank you. This worked for me. And, I will add that it was some change that occurred from version 4.13 to 4.14.

Re: Attributes not included in HitTestResult

LorenzoMara — Sun, 22 Oct 2023 14:01:11 GMT

Thanks, it really worked for me. Only ObjectID was shown to me

Re: Attributes not included in HitTestResult

hoogw — Thu, 09 Jan 2025 22:04:34 GMT

Thanks I had same problem.

hitTest result only out put object id field, missing all other additional fields.

My feature layer is created from client side array of graphic as source.

If your feature layer created by using URL ( server-side source ) you don't have this kind of issue.

OutFields by default will be "*",

I solve my problem is by adding

outFields: ["*"],

backgroundFeatureLayer.outFields = ["*"];