How to use cloud_username as filter for layer?

[Jeroen-GroeneBij]

I have created a workaround. See this topic in Advanced Use and Customization:

Set user permissions per user per area

Hi there, I was looking for a way to prevent users to update features outside a designated area. The idea is to use the cloud_username variable as defining value. A cloud username is assigned to a certain area by a project manager so that user can only update features or add new features, etc. within that area. My first idea was to use the Geofencing option and apply a filter to the geofencing layer. However, that doesn’t work. QGIS can not handle variables in a filter statement. So, here is…