topic Re: Popup Content with Layer ID in ArcGIS JavaScript Maps SDK Questions

Popup Content with Layer ID

MichaelK1 — Wed, 14 Sep 2022 12:55:44 GMT

Is it possible to show layer id in a popup's template ?

layer expression:

{
name: "layer",
title: "layer",
expression: "$layer.id"
}

https://codepen.io/michaelk95/pen/NWwyxyE

Re: Popup Content with Layer ID

DougLogsdon2 — Wed, 14 Sep 2022 14:05:02 GMT

The global name "$layer" is misleading. It actually represents the FeatureSet of all features in the same layer as the Popup's feature:

ArcGIS Arcade > FeatureSet

I suggest adding a feature attribute for the id/title.

Re: Popup Content with Layer ID

LaurenBoyd — Wed, 14 Sep 2022 20:30:13 GMT

Hi @MichaelK1 -

You could access the layer ID of the current selected feature by creating your content from a function like this:

layer.popupTemplate = { title: "{ObjectId} | {length}", expressionInfos: [{ name: "length", expression: "$feature.length" }], // Create content from function and refernece the feature's layer id content: ((event) => { return `{length} | ${event.graphic.layer.id}`; }) };

You can still reference expressions within the function as well. Here's an updated codepen: https://codepen.io/laurenb14/pen/gOzLExz?editors=1000

Hope this helps!