Project: QGIS
Version: 2.10.0
To select linked entries from other tables one can use the relation reference widgets. One can either select elements graphically by selecting them in the map, if the linked feature has a geometry attached or choose an element by the linked id. To facilitate the non-spatial selection it is now possible to narrow the available options with filters (chained or unchained). If the filters are unchained their choices are combined with "AND" to define the available options. If chained is checked, a drill-down mode for the filters is activated so each filter only shows the entries which correspond to the previous filter. This is useful for selecting from hierarchical data like City -> Street -> Number.
This feature was developed by: Matthias Kuhn (OpenGIS) This feature was funded by: SIGE
