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namespaceの重複

Posted at

名前空間の重複

railsはクラス名を自動解決してくれたりするので、場合によってはうまく解決出来ないケースがある

エラーになったケース

app/controllers/hoge/piyo_controller.rb
tmp = Hoge::Foo.new
app/services/hoge/foo.rb
module Hoge
  class Foo
    
  end
end

この場合、controller側で
uninitialized constant Hoge::Foo
となる。
理由はFooクラスapp/controllers/hogeから探してしまうためである。

解決方法

app/controllers/hoge/piyo_controller.rb
tmp = ::Hoge::Foo.new

このように先頭に::をつけてあげると、親の方から探してくれる。

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