I found where the problem is...
It is not a problem in the ManyToManyField but in the intermediate table. Django refused that my intermediate table doesn't have an unique id ! So, in the sql which created django, it created automatically an unique id named "id", but in my database I didn't create one (because the couple of two foreign key is usually enough). Next time, I'll be more carefull. -- You received this message because you are subscribed to the Google Groups "Django users" group. To view this discussion on the web visit https://groups.google.com/d/msg/django-users/-/JapIfF9CQZYJ. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
