Two fields in go-playground/validator/v10 need to be verified

During the development process, we often need to verify the data entered by the user. When developing in Go language, go-playground/validator/v10 is a very easy-to-use verification library. It provides rich verification rules and concise usage methods, which can help us quickly and effectively verify the legality of data. In this article, PHP editor Xinyi will introduce how to use go-playground/validator/v10 to verify two fields, and give detailed code examples. Let’s learn together!

Question content

Need to check that at least one field should exist email, at least one phone number is required

Currently I have a custom validator

func validateEmailPhone(fl validator.FieldLevel) bool {
    user := fl.Top().Interface().(models.User)
    validate := validator.Validate{}

    if user.Email == "" && user.Phone == "" {
        return false
    }
    if user.Email != "" {
        if err := validate.Var(user.Email, "email"); err != nil {
            return false
        }
    }
    if user.Phone != "" {
        if err := validate.Var(user.Phone, "e164"); err != nil {
            return false
        }
    }
    return true
}

But very panic

User is gorm model

How to check these two fields in this case

Solution

There are Lots of conditionsrequired validator## tags in #. In your case you may want required_without_all omitempty.

required_without_all - Makes a field required if all fields in the list are empty.

omitempty - Only the field is allowed to be empty.

Remember that required tags must come before omitempty.

Example

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