topic arcade output the field name alias in ArcGIS Online Questions

arcade output the field name alias

AngeliaH — Thu, 03 Jun 2021 18:59:34 GMT

Hello! I am trying to return the alias field name rather the the actual field name for a pop-up in a hosted feature layer in Arcade. Basically I am searching my feature layer for any field that has the value "Yes" and want to return a list of fields. I am trying to use the schema function but keep getting a syntax error. Does anyone have any ideas on what I am doing wrong?

// Create a featureset, my layer is called ParkRecreationFacilities
var features = FeatureSetByName($map,"Park_and_Recreation_Facilities_public - Park and Recreation Facilities", ['*'], false);

// Create a dictionary holding the schema
var aDict = Schema(features);

// Create an array of dictionary's holding field info
var aArray = aDict["fields"];

// Access dictionary directly for field position 1
var aDict2 = aArray;

//Create output variable that will pull alias field name
var output = aDict2["alias"];

var returnstring = "Yes"
for (var i in $feature) {
if ($feature[i] == returnstring) {
output += i + TextFormatting.NewLine;
}
}
return output

Re: arcade output the field name alias

AngeliaH — Thu, 03 Jun 2021 20:19:03 GMT

I've also tried this syntax:

var output = ''
var returnstring = "Yes"
for (var i in $feature) {
if ($feature[i] == returnstring) {
output += Schema(i)["alias"] + TextFormatting.NewLine;
}
}
return output

I feel like I am so close to figuring it out...

Re: arcade output the field name alias

KenBuja — Thu, 03 Jun 2021 20:24:01 GMT

What's happening is your var output line is failing since it's not a dictionary, but an array of dictionaries. You have to cycle through each of them to get the correct alias.

Here's one way to show the alias

Note: ignore the code stuff after "return output:". Something odd is going on with the parser.

Re: arcade output the field name alias

AngeliaH — Thu, 03 Jun 2021 20:30:26 GMT

Yes! Thank you! I had to tweak 1 little thing and it works! Hooray! Here is the final syntax:

Re: arcade output the field name alias

KenBuja — Thu, 03 Jun 2021 21:10:46 GMT

Great! That one tweak was left over from testing with my data.

Re: arcade output the field name alias

BrunoRochaPA — Fri, 11 Feb 2022 21:05:34 GMT

Hi everyone,

I'm not an expert with Arcade I'm looking for help to slove a problem

So I'm using this code to hide on popups the null fields is it working but I would like to change the "field name" to the "field alias"
This is a related table but i think there's no problem with that.

Thank you all! 😄