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Railsでbuildしたnew_recordなオブジェクトを削除する方法

Posted at

親モデル.子モデル達.destroy(子モデル)


customer = Customer.new
customer.contatcs.build(name: '1')
customer.contatcs.build(name: '2')
customer.contatcs.build(name: '3')
customer.contatcs.build(name: '4')

name  2 のものを消したいときは、

target = customer.contatcs.second
customer.contatcs.destroy(target)

とすれば消せる。

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