Hey @jmeler I too am looking for the same solution: One topic, in two categories.
Gmail is a great platform example of this feature being used.
With Gmail, you can apply Label #1, and Label #2 to Email #1.
Now you can find Email #1 in folder Label #1 or Label #2.
- The Gmail Folders would represent Discourse Categories.
- The Gmail labels would represent Discourse tags.
Click Here to learn more about how Gmail Labels work.
Use Cases In Discourse
Background: There is a Discourse instance for a USA demographic about news locally, nationally, and globally.
Here is the category layout…
- News (Main Category)
- Local: California (Sub Category)
- Local: Texas (Sub Category)
- Local: New York (Sub Category)
- National (Sub Category)
- International (Sub Category)
Now lets say there is International news about a spy balloon currently in China, making its way to USA, and eventually ending up in Texas.
It would first be posted in the International category, but as the balloon moves to USA, it would then be added to both International & National category. As it moves to Texas, it would now be added to all 3 categories.