How can i prefill datetime_select with times in custom time zone?

Question

I have events that can be in different time zones.

Upon edit I want the time & date to show with the time zone

Answer 1

As pixeltrix pointed out in the thread of the bug report, it's cleaner to override the readers/getters of the attributes in question like so:

# in event model

def beginn
  super.in_time_zone(time_zone) if super
end

def endd
    super.in_time_zone(time_zone) if super
end

This way the logic in the edit action as outlined in the question can be omitted and interferences with other parts that rely on Time.zone are avoided.