如何将范围写入其他模块包含的模块中？ （铁路4.2）

Question

我有一个类似

的模块

module FooConcern
  extend ActiveSupport::Concern

  def self.included(klass)
    klass.instance_eval do
      scope :deleted, -> { where(state: STATE_DELETED) }
      scope :closed, -> { where(state: STATE_CLOSED) }
      scope :opened, -> { where(state: STATE_OPENED) }
    end
  end


  included do
    def deleted?
      state == STATE_DELETED
    end


    def closed?
      state == STATE_CLOSED
    end


    def opened?
      state == STATE_OPENED
    end
  end
end

和其他模块如：

module Bar
  include FooConcern
  include LotConcern
  include OfConcern
  include OtherConcern
  include ModuleConcern
end

和使用Bar的课程：

class Baz
  include Bar
end

错误：wrong number of arguments (given 0, expected 1)模块栏在包含在课堂之前包含Foo，所以我认为它不能给出参数。

如果我将范围直接放在阻止included do中，则引发错误：undefined method 'scope' for Bar:Module

如何按模块包含我的范围包括模块？

Answer 1

我发现这种方式，如果你有更好的......

def self.included(klass)
  klass.instance_eval do
    include FooConcern
  end
end

Bar模块中的