Create label from the nonNull fields in layer

LandonHarris

I am trying to write an arcade expression to return a list of the fields and values where the value is not null. I am filtering for the field name starting with "com". So far all I get is a blank dictionary. Just to clarify this is to populate a field which I will use to create the label.

 

 

var pattern = "com"  // Substring to match field names starting with "com"
var result = {}
for (var field in $feature) {
    if (Left(field, Count(pattern)) == pattern && !IsEmpty($feature[field])) {
        result[field] = $feature[field]
    }
}
Console(result)
return result

 

 

 

kenbuja

Put those console lines between lines 4 and 5 so you can see how they're being evaluated for the if statement. Also, initialize "results" as a dictionary, not a null (line 2).

var pattern = "com"; // Substring to match field names starting with "com"
var result = {};
Expects($feature, "*");
for (var field in $feature) {
  console(Left(field, Count(pattern)), pattern, Left(field, Count(pattern)) == pattern, $feature[field])
  if (Left(field, Count(pattern)) == pattern && !IsEmpty($feature[field])) {
    result[field] = $feature[field];
  }
}
Console(result);
return Text(result);

This is an example of how I tested it in the Playground