Arcade Conditional Visibility Statement Help

Henry

Hi,

Still working with Arcade here and there - trying to get some Field Maps configured with conditional visibility similar to Relevant fields in forms used in Survey123 but I'm quite a newbie to Arcade.

I've managed to get conditional visibility working for single values so that a field won't appear if a specific value is selected in a previous field. Ex: $feature.name == 'value'.

How would that work for a number of options? Say I wanted to restrict the field from appearing in the form for values "a, b, c" OR 'd" entered in a previous field?

I suspect it would use If-Else, but I don't want the field to populate with another value - I just don't want it to appear!

Maybe I'm overthinking it . . .

jcarlson

Check out the function Includes. If you define a list of values, you can use this to return a boolean true/false.

var restricted_list = ['a', 'b', 'c', 'd']
var prev_field = $feature['field_name']

// Will return 'true' if previous field is in restricted list
return Includes(restricted_list, prev_field)

It may make more intuitive sense to equate "true" with "visible", though, so you can simply re-write that with an added !, which negates whatever comes after it.

!Includes(...)

Which will return "true" if the previous field is not in the restricted list.