I'm applying a Value Map widget to two text fields in my layer. The two fields are as follows:
I have a hierarchy consisting of Landcover, and under that Landuse, where the color is code for the available option. For example, Residential is only a Built-up landcover, and Open only has Grassland and Woodland to chose from.
I want to apply a widget to the Lower field, where based upon the selected value of Upper, it display only the available choices for Lower
How can this be achieved with QGIS Attribute Form widgets, or other Layer Properties configurations?