wagtail
RFC 95: Concurrent editing notifications
Currently, if two users edit the same page or snippet at the same time, the second user to save their changes will overwrite the first user's changes. This doesn't seem to be a common problem, and can often be avoided through communication - however, it will need to be addressed in advance of implementing auto-saving, as this increases the likelihood of users overwriting each other's changes unknowingly.
The "holy grail" of avoiding edit conflicts would be a real-time collaborative editing feature where changes are reflected immediately on the other user's screen, but this will not happen any time soon. A locking mechanism has been proposed, but this raises further implementation questions (for example, who has authority to override a lock in the case that an editor leaves a page open and goes on holiday?) and would be overly disruptive.
This RFC proposes an approach where users are notified of any other users editing the same item. Users will not be blocked from editing, but will be provided with information about the potential for conflicts, and how to resolve them when they do occur.
