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Concernsに切り出したmoduleのなかでActiveRecordのScopeを使う方法

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こんにちは! Rails芸人(仮)の@srockstyleです!

concern内にあるmoduleに切り出したメソッドでScopeつかいたーい、なんて時に使う方法です。

module TestModule
	extend ActiveSupport::Concern
	def self.included(base)
    	base.class_eval do
      		scope :testerexe, -> do 
      			where(deleted_at: nil)
      		end

      		scope :testabexe, -> do 
      			where(created_at: nil)
      		end
      		
      		scope :testcdexe, -> do 
      			where(updated_at: nil)
      		end
      	end
	end
	
	## ここでScope読み込めちゃう
	def self.test
		User.testcdexe
	end
end 

複数モデルから参照するときは、whereなどでつかうカラムがあったりなかったりすることに気をつけて下さい。

以上、あまりRailにのってないかもしれないConcernの使い方でした。

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