I m Stuck in two situation where I have to modify value of one field depending on another field selection.
First situation is like I have two field
Region (Node reference) - the widget type is autocomplete
Subregion (Node reference) - the widget type is autocomplete
On select of region, subregion value should be populate. Behavior should be same like country and state.
Second situation is like in same form I have another two field
Event - widget type is auto complete
On select of date, events on that date should be populate.
Both are almost similar situation. I haven't found any solution for both above situation. How can I do this. Please anyone help me on this. Thanks