英文:
Golang validator custom validation rules for enum
问题
我正在使用https://github.com/go-playground/validator，并且我需要为不同的枚举值创建自定义验证规则。这是我的结构-https://go.dev/play/p/UmR6YH6cvK9。正如你所看到的，我有3种不同的用户类型：管理员、版主和内容创建者，我想为它们调整不同的密码规则。例如，管理员的密码长度应至少为7个字符，而版主的密码长度应至少为5个字符。是否可以通过go-playground/validator中的标签来实现这一点？
我的服务接收用户列表，并需要使用不同的规则进行验证。
英文:
I am using https://github.com/go-playground/validator and I need to create custom validation rules for different enum values. Here are my structures - https://go.dev/play/p/UmR6YH6cvK9. As you can see I have 3 different user types Admin, Moderator and Content creator and I want to adjust different password rules for them. For example admins, password length should be at least 7 symbols while Moderators should be at least 5. Is it possible to do this via tags in go-playground/validator?
My service gets List Of user and need to do validation with different rules
答案1
得分: 2
你可以为UserType添加一个方法，使用validator包来验证用户。
type UserType int
const (
Admin UserType = iota
Moderator
ContentCreator
)
func (u UserType) Validate() error {
switch u {
case Admin:
// 验证管理员
case Moderator:
// 验证版主
case ContentCreator:
// 验证内容创作者
default:
return fmt.Errorf("无效的用户类型")
}
return nil
}
调用验证的方式如下：
func main() {
a := User{
Type: Admin,
Name: "admin",
Password: "pass",
LastActivity: time.Time{},
}
err := a.Type.Validate()
if err != nil {
fmt.Println("无效的用户：%w", err)
}
}
英文:
You can add a method to UserType that uses the validator package to validate the users.
type UserType int
const (
Admin UserType = iota
Moderator
ContentCreator
)
func (u UserType) Validate() error {
switch u {
case Admin:
// validate admin
case Moderator:
// validate moderator
case ContentCreator:
// validate content creator
default:
return fmt.Errorf("invalid user type")
}
return nil
}
Calling validate would look something like this
func main() {
a := User{
Type: Admin,
Name: "admin",
Password: "pass",
LastActivity: time.Time{},
}
err := a.Type.Validate()
if err != nil {
fmt.Println("invalid user: %w", err)
}
}
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