Based on some questions, the Event model looks like.

  create_table "events", force: :cascade do |t|
    t.string   "title"
    t.datetime "start"
    t.datetime "end"
    t.string   "color"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
  end

puma-dev now supports the ability to map your application with a helper. This would replace the need to use the pumad script as shown in the video.

puma-dev link [-n name] [dir]

I'll definitely look into this, but it does appear to be something a bit more application specific.

My initial thoughts would be to use an android device and a javascript library. Since iOS does not allow for direct access to the camera with getUserMedia, you would have different functionality between platforms.

Were you thinking of a USB Barcode scanner or something similar? I wonder if they make WiFi barcode scanners that can make an post to a web API.

One thought would be making a CLI utility so that you can generate the files without having to add/remove the gem. This way, it would be a globally accessible thing that could easily be used on other projects.

You may not need foreman with puma-dev since it will automatically start up your Rails app on the first request.