Add an easy way to define a finite set of values for a certain field.

Add this line to your application's Gemfile:

gem 'enum-x'

And then execute:

$ bundle

Or install it yourself as:

$ gem install enum-x

In the simplest form, you can use the EnumX class by itself:

enum = EnumX.new(:my_enum, %w[ one two three ])
my_variable = enum[:one]
my_variable.class    # => EnumX::Value
my_variable.to_s     # => 'one'
my_variable == :one  # => true

Using the DSL, you can assign an enum to some attribute, much like most other enum-libraries:

class Post < ActiveRecord::Base
  include EnumX::DSL

  enum :status, %w[ draft published ]
end

If you wish to re-use enums, you can share them by defining them centrally, e.g.

config/enums.yml:

post_statuses: [ draft, published ]

app/models/post.rb:

class Post < ActiveRecord::Base
  include EnumX::DSL

  enum :status, :post_statuses
end

If you don't provide a second argument, the plural form is used:

config/enums.yml:

currencies: [ euro, dollar ]

app/models/post.rb:

class Price < ActiveRecord::Base
  include EnumX::DSL

  enum :currency
  # => equivalent to 'enum :currency, :currencies'
end

When using the DSL, a shortcut to the enum is created on the class. Price.currencies is a shortcut to EnumX.currencies, and Post.statuses is a shortcut to EnumX.post_statuses.

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request