Hi, I'm trying to enhance OCA/vertical-medical appointment's module by inherit calendar.event instead of re-create a calendar. the goal is to get native event recurrence and attendee's functionality.

I'm pretty new in odoo development but I made the whole part I think. There's an error when I'm trying to create an appointment saying that : http://pastebin.com/UrNi6KUe .

I'll be glad to hear advices I must forget something.

The code is here https://github.com/BusinessAgile/vertical-medical/tree/recurrency

Thanks for your time.

Maxime.