Question

I have a ruby on rails app, and there is a cron running in the background.
The cron job runs every 10 minutes on the 10 minutes, so 9:00, 9:10, 9:20, 9:30 and so on.
In my rails app, I want to show when the cron will next run.

So I will have, “Cron will next run at: 9:20PM”

I just can’t figure out how to get this in ruby.

Thanks,
Andrew

Answer 1

def next_10_minutes
  nxt = Time.now+(10-Time.now.min%10).minute
  nxt.strftime("%H:%M")
end

next_10_minutes
#=> "00:30"

or little more flexible and monkey patching

class Time
  def self.next_10_minutes
    self.now+(10-Time.now.min%10).minute
  end
end

Time.next_10_minutes.strftime("%H:%M")
#=> "00:40"