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Strong Parametersでネストする場合の注意点

Posted at
params = {
  title: "タイトル",
  content: {
    header: "見出し",
    body: "内容"
  },
  author: "太郎"
}

みたいなパラメータをpermitしてあげるときこの順番通りに実装しようとすると

params.permit(:title, content: [:header, :body], :author)

となるが、これだとsyntax errorになる
理由はネストする場合はそのネストするパラメータを最後に持ってこないといけないため。
正解はこれ

params.permit(:title, :author, content: [:header, :body])
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