ketsuban

Skip unlucky numbers for ActiveRecord surrogate key id.

Usage

Gemfile:

gem 'ketsuban'

Some Model:

class User < ApplicationRecord
  include Ketsuban
  unlucky_numbers [4, 5]
end

5.times.map { User.create.id }
# => [1, 2, 3, 6, 7]

or

class User < ApplicationRecord
  include Ketsuban
  unlucky_numbers ->(next_id) { next_id.odd? }
end

5.times.map { User.create.id }
# => [2, 4, 6, 8, 10]

License

The gem is available as open source under the terms of the MIT License.