Arcade expression doesn't show in pop-up

Question

Hello,

I have this code and I getting result in test but I can't set it up in pop-up of new map viewer?

var intersectLayer =Top(OrderBy(FeatureSetByName($map,"xyz"),"Inspection_Date DES"), 3);

return intersectLayer

and this is I am seeing on pop-up

JohannesLindner · Accepted Answer

intersectLayer is a FeatureSet. It will be shown in the expression builder's test, but popups can't show it.

You have to build a string:

var inspection_dates = []
for(var f in intersectLayer) {
    Push(inspection_dates, f.Inspection_Date)
}
return Concatenate(inspection_dates, TextFormatting.NewLine)

JohannesLindner · Accepted Answer

* You're using Text() on a feature, which returns a json string containing info about the geometry and attributes of the feature. What you want to do is extracting the fields of the feature, not the whole feature. 
* You're not adding to your popupText sring. Instead you reassign a new value to it each time, which is why you only see one line as a result.
* There's no need to call Text() here. Your fields are all strings, the number format won't do anything. What you could do is using DefaultValue() to insert some meaningful text if there's a null value in a field.

var popupLines = [
    "Age: " + DefaultValue(cou.age, "not reported"),
    "Gender: " + DefaultValue(cou.gender, "not reported"),
    "Race: " + DefaultValue(cou.race, "not reported"),
]
return Concatenate (popupLines, TextFormatting.NewLine)
// or comma sepated:
// return Concatenate(popupLines, ", ")