I thought that I’d share really quick, as this was a two day troubleshoot for me. I couldn’t get ActionCable to broadcast, and therefore i couldn’t get the catalog page to auto-update, no matter what I did. Admittedly, against the instruction in the book, I am developing in Rails 5.0.1.
Ok, so the thing that finally got it to work was simply adding
//= require action_cable
I hope that this helps someone in the future.