cancel scheduled event

[EvaJanouskova]

If it is not against anything, I would love to have the option to cancel a scheduled Event.

[tamuri]

Can you give examples or usage? How do you know which event to cancel - you keep a reference?

[EvaJanouskova]

@tamuri, Currently, I'm preparing code where I handle the cancellation through individual properties. I could push it if you'd like to see it.

In the wasting module, with moderate or severe wasting incidence, Wasting_IncidencePoll(RegularEvent, PopulationScopeEventMixin) or Wasting_ProgressionToSevere_Event(Event, IndividualScopeEventMixin), respectively, the natural recovery or progression is scheduled in the future (after the duration of untreated moderate/severe wasting). However, the person could be sent for treatment before this happens, and the recovery due to treatment could be scheduled before or after the already scheduled natural recovery.

The idea is that if the treatment is finished before the scheduled day of natural recovery, they recover with the treatment, hence the natural recovery on that day needs to be cancelled. Otherwise, if the person has a new episode of wasting, they will recover on that day from the new episode, even though it was the recovery scheduled for the previous episode. On the other hand, if they naturally fully recover before the recovery with treatment, then the recovery with treatment should be cancelled, so they won't recover with this scheduled recovery from the next episode of wasting.

[tamuri]

This probably does need to be handled using individual properties because you don't want to be scanning every event in the event queue to see if it's the one you're looking for and remove it. Better for it to operate the same way as when the individual is no longer alive i.e. we check and exit at the top of the method. I guess you think your check is too complex? Happy to take a look.

[EvaJanouskova]

Ok, I will do it with the properties then. Thank you for considering. Will ask for review once I add it into the PR.