In our Team Room example, if we want to list all input data error messages entered for a new subject, then we can add the following to the top of app \ views \ subjects \ _form.rhtml.

在Team Room示例中，如果希望列出为新主题输入的所有输入数据错误消息，可以在app \ views \ subjects \ _ form . rhtml的顶部添加以下代码。

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