Add values/classes to symbology that are not yet present in the layer

wayfaringrob

I sometimes make web apps that are used for editing purposes by others. Ideally, I'd be able to add a separate symbology category for several expected values that they'll be putting in, but am not finding any options to do so unless those records already exist. I'm only able to use the 'other' setting. I suppose I could add some dummy data, but I'd really prefer not to as that can throw other things off.

 

wayfaringrob

As a workaround, I've found that you can trick it into adding extra values by adding dummy data, deleting the expression, re-entering the expression, re-configuring your symbology, and removing the dummy data. The value classes seem to stay even when the dummy data is gone.