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Railsでのjoinsの結果のidについて

Railsでテーブル結合してデータを取得した時、idを参照元の主キーにしたいのに参照先の主キーになってしまっていた。
結論として

Hoge.joins(:fuga).where(fuga_name:"hoge").select("fuga.*,hoge.*")

このようにselectで最後に指定したテーブルの主キーが結合したデータの主キーとなる。

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