Set unique symbology using multiple values in ArcGIS Online using Arcade

Question

I wanted to use two values to set my unique symbology for use in a map layer in ArcGIS online. Is this possible using the custom expression option? Here is the code I am using.

Unfortunately I am only getting the later value as the result. Results should be a letter for PhaseCode followed by the placement value.

DomainName($feature,"PhaseCode") + $feature.Placement
if($feature.Placement == 1){
    return 'OH';
}
    else {
    return 'UG';
}

Answer 1

It looks like this will:

1. Generate a value like A1, because it's using the unmodified value of $feature.Placement.
2. Discard the A1 just generated, because it's not assigned to a variable or returned.
3. return the exact value specified in the return statement, which will be just the two characters OH or UG.

You probably want to store the return value from DomainName in a local variable, like this:

var domainNameFound = DomainName($feature,"PhaseCode");
if($feature.Placement == 1){
    return domainNameFound + 'OH';
}
else {
    return domainNameFound + 'UG';
}