Ruby on Rails Global ActiveRecord::Enum

Question

I really like Rails 4 new Enum feature, but I want to use my enum

enum status: [:active, :inactive, :deleted]

in every model. I cannot find any way how to declare for example in config/initializes/enums.rb and include every model

I'm very new in Ruby on Rails and need your help to find solution

score 21 · Accepted Answer · edited May 23 '17 at 11:46

21

Use ActiveSupport::Concern this feature created for drying up model codes:

#app/models/concerns/my_enums.rb
module MyEnums
  extend ActiveSupport::Concern

  included do
    enum status: [:active, :inactive, :deleted]
  end
end

# app/models/my_model.rb
class MyModel < ActiveRecord::Base
  include MyEnums
end

# app/models/other_model.rb
class OtherModel
  include MyEnums
end

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edited May 23 '17 at 11:46

Community

1
1

answered Sep 19 '14 at 15:58

Roman Kiselenko

43,210
9
91
103

Great answer. I also found [this question and answer](http://stackoverflow.com/questions/14541823/how-to-use-concerns-in-rails-4) helpful. – Rick Smith Sep 08 '15 at 21:32

Fernando Serapio · Answer 2 · 2014-09-19T15:41:21.720

0

I think you could to use a module containing this enum then you can include in each module you want to use:

# app/models/my_enums.rb
Module MyEnums
  enum status: [:active, :inactive, :deleted]
end

# app/models/my_model.rb
class MyModel < ActiveRecord::Base
  include MyEnums
end

# app/models/other_model.rb
class OtherModel
  include MyEnums
end

edited Sep 19 '14 at 15:41

answered Sep 19 '14 at 15:35

Fernando Serapio

1
1

1

It wont work because enum is defined in ActiveRecord::Enum. So I get this error : `': undefined method `enum' for MyEnums:Module (NoMethodError) – Irakli Lekishvili Sep 19 '14 at 15:47
1

`enum` class macro available only in `ActiveRecord`. – Roman Kiselenko Sep 19 '14 at 15:55

Ruby on Rails Global ActiveRecord::Enum

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