Popup Template is unable to render arcade expression

AshleyOng — Tue, 05 Nov 2019 08:30:25 GMT

Hi everyone,

I am using Arcgis API for JS v4.13 to create a web application. I have a MapImageLayer created from a service url, which contains 4 sublayers:

var MyLayer = new MapImageLayer({

url: 'https://url/to//MapServer/',

sublayers: [

{

id: 5,

visible: true,

title: 'abc'

{

id: 4,

visible: true,

title: 'def'

{

id: 3,

visible: true,

title: 'ghi',

popupTemplate: customPopupThird

{

id: 1,

visible: true,

title: 'jkl',

popupTemplate: customPopupFourth

}

]

});

For my first popupTemplate, the arcade expression inside works, but for customPopupFourth, it doesn't work. Below is the popuptemplate that doesn't work.

title: 'Title for layer id 1',

outFields: ['*'],

expressionInfos: [

{

name: 'CurLandAreatoHect',

title: 'Current Land Area (ha)',

expression: '$feature.CurLandArea / 10000'

}

content: [

{

type: 'fields',

fieldInfos: [

{

fieldName: 'expression/CurLandAreatoHect'

}

]

}

]

The console from the browser throws up this error:

Logger.js:25 [esri.widgets.FeatureViewModel] query-required-fields Could not query required fields for the specified layer. Some fields will not be available.

and

Logger.js:25 [esri.widgets.FeatureViewModel] arcade-execution-error TypeError: Cannot read property 'length' of undefined
at t._fixDates (Feature.js:25)
at t.field (Feature.js:25)
at Object.member (arcadeCompiler.js:25)
at eval (eval at he (arcadeCompiler.js:25), <anonymous>:10:34)
at Generator.next (<anonymous>)
at arcadeCompiler.js:25
at new Promise (<anonymous>)
at Object.v [as create] (promiseUtils.js:25)
at Object.__awaiter (arcadeCompiler.js:25)
at mainBody (eval at he (arcadeCompiler.js:25), <anonymous>:9:14)

The resulting field in the table generated in the popup will be blank because of this error.

Thank you!

Re: Popup Template is unable to render arcade expression

sorelkebeq — Thu, 14 Nov 2019 23:32:05 GMT

I think there is a bug in Version 4.13 of the JSAPI. I am not using Arcade Expressions but I do get the same 'query-required-fields Could not query required fields for the specified layer. Some fields will not be available' warning in the console.

It seems to be related to using the "outFields: ['*']" property value pair on a MapImageLayer

The following codepen throws warnings in the console (click on a blue dot first), if you switch the script and stylesheet tags to point to JSAPI V 4.12 the warnings go away. The other way to get rid of the warning is to specify outFields explicitly rather than '*'

https://codepen.io/sorel/pen/abbRJRo

topic Popup Template is unable to render arcade expression in ArcGIS JavaScript Maps SDK Questions

Popup Template is unable to render arcade expression

Re: Popup Template is unable to render arcade expression