More elaborate styles conditions

[thom4parisot]

Is your feature request related to a problem? Please describe.

I am trying to map field coordination informations. We visit neighbourhoods, ask people if they need help to add themselves on electoral registries. We sometimes need to revisit a street at different time to wonder if we should knock at the door again, skip a house or not.

Here is the use case for someone who is registed on the lists ✅ :

answered=x
registered=x
visit_date=2025-09-09

Someone who did not answer will have these properties ❓ :

answered=
registered=
visit_date=2025-09-09

Someone who answered and is not registered will have these properties ❌ :

answered=x
registered=
visit_date=2025-09-09

However, we cannot leverage conditional styles to distinguish these values with a different color on the map.

Describe the solution you'd like

• ✅ symbol with registed=x (ok)
• ❓ symbol with visit_date!= && answered=
• ❌ symbol with answered=x && registered=

Describe alternatives you've considered

It would work with an and operator and a "not empty" value.

Additional context

[davidbgk]

Refs (dupe?) of #884

[thom4parisot]

Sorry, I was referring to the conditional style rules feature:

If the Condition field uses the same language as the one you refer to in #884, then yes this issue is a duplicate.