In my Rails 5 app, I have an Address model, which has Country Code and Region (state). I've done quite a bit of research, but I can't seem to find a current gem that will help me create a select dropdown for country that's populated with all the possible, then once I select a country, populates a second select dropdown for region that has all the regions of that country. None of the gems I've been directed to thus far have been updated recently, and some (like country_state_select) doesn't work at all in Rails 5.
Has anyone come up with an elegant solution for this problem in Rails 5 specifically?