Need to validate two fields in go-playground/validator/v10

need to check atleast one of field should be present email, phone atleast one is mandatory

currently I have 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 its panic

the user is gorm model

in this scenario how to check these two fields

There are plenty of conditional required tags in validator. In your case, you probably want required_without_all + omitempty.

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

omitempty - simply allows the field to be empty.

Please keep in mind that the required tag must come before omitempty.

Example