module Bullet::Dependency

def active_record_version
  @active_record_version ||=
    begin
      if active_record40?
        'active_record4'
      elsif active_record41?
        'active_record41'
      elsif active_record42?
        'active_record42'
      elsif active_record50?
        'active_record5'
      elsif active_record51?
        'active_record5'
      elsif active_record52?
        'active_record52'
      elsif active_record60?
        'active_record60'
      elsif active_record61?
        'active_record61'
      elsif active_record70?
        'active_record70'
      else
        raise "Bullet does not support active_record #{::ActiveRecord::VERSION::STRING} yet"
      end
    end
end