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rails - 让model显示validation错误信息

发布时间: 2022-02-20 03:07:00

refer to: https://stackoverflow.com/questions/31806431/rails-validation-knowing-which-field-is-invalid

product.valid? # => run validation callbacks， 这个方法一定要调用，否则不会展示下面的内容

product.errors.messages # => {:field1=>["cannot be nil"]}

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