Query Related Features
This sample demonstrates how to query related features from a FeatureLayer by using the queryRelatedFeatures() method. Each hexagon on the map represents one or more major cities in the U.S. Clicking on a hexagon will trigger a query for its related features, which will be displayed in a table added to the view's UI.
How it works
A function calls queryObjectIds() whenever the user clicks on the map, which returns the objectId of the corresponding hexagon in the layer.
We highlight the hexagon, then use the queryRelatedFeatures() method to query for the related features attached to this object id.
Then, we get the attributes from the resulting FeatureSet and create a table element that can hold the resulting data.