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【Rails】Unable to autoload constant (module名)::(controller名)Controllerエラーが出た件

Last updated at Posted at 2022-01-30

#状況

  • routing、model、controller、viewを作成し、ローカルでページにアクセスしてみた。
  • 以下のエラーが表示された。
Unable to autoload constant (module名)::(controller名)Controller, expected 
/(service名)/app/controllers/(controller名)_controller.rb to define it

#解決法

コントローラーの内容を module ~ end で囲う。

(controller名)_controller.rb
module (module)
  class (controller)Controller < ApplicationController
    (コントローラーの内容)
  end
end

このような見落としを防ぎたい限りである。

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