Useful scopes for MicroServices in Ruby on Rails

model.rb

  scope :to_do, lambda { where(:processed => false) }
  scope :processed, lambda { where(:processed => true) }
  scope :to_do_now, lambda { where("due_date > ? AND due_date < ?", DateTime.now, DateTime.now + 3.minutes) }
  scope :not_processed, lambda { where(:processed => false) }
  scope :circular, lambda { where("minutes IS NOT NULL") }