I've worked out a way to allow multiple groups (curated content) inside the Add Data widget. I'm sharing this hack as this has been requested by a few people: add Open Data to Add Data Widget and allow multiple Curated Categories
A couple things to note:
- There are probably better ways to do this: like make it dynamic instead of all the hard coded references
- This modifies the Add Data code once the widget has been deployed. As such, you cannot go and modify the app-widget using the builder.
- These changes were made against WAB 2.10
After creating your App with an Add Data widget, you'll need to update 4 files