Avoid two consecutive item state changes or executions of rules

Setup, Configuration and Use Scripts & Rules
11

JRuby gives you three options to deal with this situation:

Guard Triggers Immediately Description
#debounce_for No Waits until there is a minimum interval between triggers.
#throttle_for No Rate-limits the executions to a minimum interval, regardless of the interval between triggers. Waits until the end of the period before executing, ignores any leading triggers.
#only_every Yes Rate-limits the executions to a minimum interval. Immediately executes the first trigger, then ignores subsequent triggers for the period.

To deal with a “Door bell” being pressed repeatedly, use only_every

Example rule:

# They can keep pressing the door bell as often as they like,
# but the bell will only ring at most once every minute
rule "Door Bell is pressed" do
  updated DoorBell_Button, to: "single"
  only_every 1.minute
  run { Audio.play_stream "doorbell.mp3" }
end

Or in a UI rule (just the rule body):

only_every 1.minute do
  Audio.play_stream "doorbell.mp3"
end