Question

我正在尝试使用govalidator - https://github.com/asaskevich/govalidator

我想知道是否可以检测结构中的哪个字段未通过验证检查，以便我可以返回相应的错误消息。例如：

type Post struct {
    Title    string `valid:"alphanum,required"`
    Message  string `valid:"required"`
}

result, err := govalidator.ValidateStruct(post)
if err != nil {
    //if title is missing then show error 1
    //if message is missing then show error 2
}

Answer 1

这似乎与issue/67类似：

此时它会出现如下错误：

Title: My123 does not validate as alpha;
AuthorIP: 123 does not validate as ipv4;

我创建了函数ErroByField(e error, field string)，它将返回struct的指定字段或空字符串的错误，否则，我希望它会有所帮助。

例如：

type Post struct {
    Title    string `valid:"alpha,required"`
    Message  string `valid:"ascii"`
    AuthorIP string `valid:"ipv4"`
}

post := &Post{"My123", "duck13126", "123"}
result, err := govalidator.ValidateStruct(post)

titleError := govalidator.ErrorByField(err, "Title")
if titleError != "" {
    println(titleError) // -> My123 does not validate as alpha
}

检测失败的struct字段 - govalidator

1 个答案: