Delayed Job provides send_later and send_at as instance as well as class_methods methods along-with handle_asynchronously as class method to be written inside class
module Delayed
module MessageSending
def send_later(method, *args)
Delayed::Job.enqueue Delayed::PerformableMethod.new(self, method.to_sy m, args)
end
def send_at(time, method, *args)
Delayed::Job.enqueue(Delayed::PerformableMethod.new(self, method.to_sy m, args), 0, time)
end
module ClassMethods
def handle_asynchronously(method)
aliased_method, punctuation = method.to_s.sub(/([?!=])$/, ''), $1
with_method, without_method = "#{aliased_method}_with_send_later#{pu nctuation}", "#{aliased_method}_without_send_later#{punctuation}"
define_method(with_method) do |*args|
send_later(without_method, *args)
end
alias_method_chain method, :send_later
end
end
end
end
Usage of send_later, send_at and handle_asynchronously
# instance method
user.send_later(:deliver_welcome)
# class_method
Notifier.send_later(:deliver_welcome, user)
Notifier.send_at(15.minutes.from_now, :deliver_welcome, user)
# Inside User class write below line after deliver_welcome method
handle_asynchronously :deliver_welcome
