Mongoid::EnumAttribute

Updated and tweaked version of the no-longer-maintained mongoid_enum.

Add this line to your application's Gemfile:

gem 'mongoid-enum_attribute'

And then execute:

$ bundle

Or install it yourself as:

$ gem install mongoid-enum_attribute

class Payment
  include Mongoid::Document
  include Mongoid::EnumAttribute

  enum :status, [:pending, :approved, :declined]
end

Gives you getters,

payment.status
# => :pending

setters,

payment.approved!
# => :approved

conditionals,

payment.pending?
# => :false

and scopes

Payment.approved
# => Mongoid::Criteria for payments where status is :approved

You can use the :prefix and :suffix options, to prefix or suffix the methods of the enum. If the passed value is true, the methods are prefixed/suffixed with the name of the enum. It is also possible to supply a custom value:

enum :status, [:pending, :approved, :declined], prefix: true
enum :payments_status, [:pending, :approved, :declined], prefix: :payments

enum :status, [:pending, :approved, :declined], suffix: true
enum :payments_status, [:pending, :approved, :declined], suffix: :payments

This will result in the following methods:

payment.status_declined! # prefix: true
payment.payments_declined! # prefix: :payments

payment.declined_status! # suffix: true
payment.declined_payments! # suffix: :payments

If you want to change the behaviour app-wide you can use the configuration:

Mongoid::EnumAttribute.configure do |config|
  config.field_name_prefix = '_' # prefix of the field used to store the values in database
  config.prefix = nil # prefix of the ! & ? method
  config.suffix = nil # suffix of the ! & ? method
end

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/tomasc/mongoid-enum_attribute.