Contents
How to create a value relation in qfield?
The widget “Value Relation” offers values from a related table in a combobox. You can select layer, key column and value column. Several options are available to change the standard behaviors: allow null value, order by value and allow multiple selections. The widget will display a drop-down or multiple-select list of the referenced features.
How are form value relation dropdowns in QGIS?
I created form-value related dropdowns in a QGIS project that work perfectly. The Idea is to collect data of points in the field. All types (“Art”) have subtypes (“Subart”) that are dependant on their type. As I opened the project in QField, the dropdowns were blocked.
As I opened the project in QField, the dropdowns were blocked. Is QField not capable to handle related dropdowns? No, for now you can’t filter a dropdown based on another field value (if you really need it you’ll have to develop it yourself or sponsor a development…).
Can a field have a default value in qfield?
Fields can have default values configured. Default values are inserted into the attribute form when digitizing a new feature. They are visible to the user and can be modified as long as the field is editable. They can be based on the geometry or expression variables.
What can you do with QGIS and qfield?
QField functionality includes feature digitizing, geometry and attributes editing, attribute search, forms customizable through QGIS, GPS support, and camera integration. QField supports creating and editing points, lines and polygons. You can also configure snapping in QGIS and use that in QField.
Where can I find the relation widget in QGIS?
For more information refer to the relations chapter of the official QGIS Documentation. The relation widget shows all the referencing child features in a list. It is possible to add, delete and open them. The visual identification of the list entries are done via the “Display Expression” of the child layer.