Ruby on Rails Global ActiveRecord :: Enum

Question

我真的很喜欢Rails 4新的Enum功能，但我想使用我的枚举

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

在每个模型中。 我找不到任何方法如何在config/initializes/enums.rb并包含每个模型

我是Ruby on Rails新手，需要你的帮助才能找到解决方案

Answer 1

使用ActiveSupport::Concern为dry模型代码而创建的此功能：

#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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Answer 2

我认为您可以使用包含此枚举的模块，然后您可以在要使用的每个模块中包含：

# 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