Querying feature layer when it loads.

YogeshSwami

Hello

I am trying to query my feature layer when it gets loaded. I found this method on the esri website:

// returns all the graphics from the layer view
view.whenLayerView(layer).then(function(layerView){
layerView.watch("updating", function(val){
if(!val){ // wait for the layer view to finish updating
layerView.queryFeatures().then(function(results){
console.log(results); // prints all the client-side features to the console
});
}
});
});

 

But this queries through all the features everytime layer gets updated(like dragging, zooming etc.). I just want to query once when it gets loaded. Can someone please help me out with this?

Thanks in advanced

 

 

UndralBatsukh

Hi there, 

What @KenBuja said. If you are using version 4.23, then please use reactiveUtils instead of watchUtils. 

 

// this will only run once after layerview finishes updating for the first time
view.whenLayerView(layer).then((layerView) => {
   reactiveUtils.whenOnce(() => !layerView.updating).then(() => {
     console.log("layer finished updating");
   });
});