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Contents
module WithReminders
extend ActiveSupport::Concern
def build_reminder
mailer = UserMailer.new
last_submission_date.nil? ?
mailer.no_submissions_reminder(self) :
mailer.we_miss_you_reminder(self, cycles_since(last_submission_date))
end
def remind!
build_reminder.post!
update! last_reminded_date: Time.current
end
def should_remind?
reminder_due? && (has_no_submissions? || has_no_recent_submission?)
end
# Try to send a reminder, by acquiring a database lock for update
# the appropriate record. This object can't be updated as long as
# the reminder is being sent.
#
# This method is aimed to be sent across multiple servers or processed concurrently
# and still not send duplicate mails
def try_remind_with_lock!
with_pg_lock proc { remind! }, proc { should_remind? }
end
private
def cycles_since(time)
((Date.current - time.to_date) / self.class.reminder_frequency).to_i
end
def reminder_due?
last_reminded_date.nil? || cycles_since(last_reminded_date) >= 1
end
def can_still_remind?(date)
cycles_since(date).between?(1, 3)
end
def has_no_submissions?
last_submission_date.nil? && can_still_remind?(created_at)
end
def has_no_recent_submission?
!last_submission_date.nil? && can_still_remind?(last_submission_date)
end
module ClassMethods
def remindable
where('accepts_reminders and email is not null
and last_organization_id is not null
and (last_submission_date < ? or last_submission_date is null)', reminder_frequency.days.ago)
end
# The frequency of reminders, expressed in days
def reminder_frequency
Rails.configuration.reminder_frequency
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems