Thank you for your response.

Yes I am (mostly) getting json actions. I have a problem since you call templates _new and _edit, and application.json.erb, you give no indicator of what should / may be in those files.

Would you be willing to share the code for the missing modules? I also get an error undefined method `midnight' for nil:Nil in all_day_event?

Again, thank you for your consideration. Your presentation has come the closest to working of the several other "add full calendar" to rails tutorials that I have tried to implement. I have found that I had to change the suffix 'js' to 'son' on the new.json.erb and _new.json.erb files for rails5 not to complain about missing templates. In your video cast, I can see that you call out 'js' as you show on the page of content under the video. ????