rails 5

應該先說 book_ids 會直接傳進來, 本來以為rails 中直接指定 類似 user.books = Book.where(id: params[:book_ids]) 他可以直接 一行sql , 其實我想討論的是它有時候是 each + update 去做 在想可能是他覺得每個都需要去做validation

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Ruby是一種為了物件導向而創的簡單快捷的腳本語。它擁有簡單易懂,方便好學的特性,能減少程式設計時候的不必要的瑣碎時間。Ruby語言通常非常直觀,會按照設計者希望的運行方式來執行。 擁有簡單易懂,方便好學的特性。 ...

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