|
|
|
@ -2,6 +2,8 @@ package main |
|
|
|
|
|
|
|
|
|
import ( |
|
|
|
|
"fmt" |
|
|
|
|
"reflect" |
|
|
|
|
"strings" |
|
|
|
|
|
|
|
|
|
"github.com/go-playground/validator/v10" |
|
|
|
|
) |
|
|
|
@ -11,7 +13,7 @@ type User struct { |
|
|
|
|
FirstName string `json:"fname"` |
|
|
|
|
LastName string `json:"lname"` |
|
|
|
|
Age uint8 `validate:"gte=0,lte=130"` |
|
|
|
|
Email string `validate:"required,email"` |
|
|
|
|
Email string `json:"e-mail" validate:"required,email"` |
|
|
|
|
FavouriteColor string `validate:"hexcolor|rgb|rgba"` |
|
|
|
|
Addresses []*Address `validate:"required,dive,required"` // a person can have a home and cottage...
|
|
|
|
|
} |
|
|
|
@ -31,6 +33,15 @@ func main() { |
|
|
|
|
|
|
|
|
|
validate = validator.New() |
|
|
|
|
|
|
|
|
|
// register function to get tag name from json tags.
|
|
|
|
|
validate.RegisterTagNameFunc(func(fld reflect.StructField) string { |
|
|
|
|
name := strings.SplitN(fld.Tag.Get("json"), ",", 2)[0] |
|
|
|
|
if name == "-" { |
|
|
|
|
return "" |
|
|
|
|
} |
|
|
|
|
return name |
|
|
|
|
}) |
|
|
|
|
|
|
|
|
|
// register validation for 'User'
|
|
|
|
|
// NOTE: only have to register a non-pointer type for 'User', validator
|
|
|
|
|
// interanlly dereferences during it's type checks.
|
|
|
|
@ -48,7 +59,7 @@ func main() { |
|
|
|
|
FirstName: "", |
|
|
|
|
LastName: "", |
|
|
|
|
Age: 45, |
|
|
|
|
Email: "Badger.Smith@gmail.com", |
|
|
|
|
Email: "Badger.Smith@gmail", |
|
|
|
|
FavouriteColor: "#000", |
|
|
|
|
Addresses: []*Address{address}, |
|
|
|
|
} |
|
|
|
@ -67,10 +78,10 @@ func main() { |
|
|
|
|
|
|
|
|
|
for _, err := range err.(validator.ValidationErrors) { |
|
|
|
|
|
|
|
|
|
fmt.Println(err.Namespace()) |
|
|
|
|
fmt.Println(err.Field()) |
|
|
|
|
fmt.Println(err.StructNamespace()) // can differ when a custom TagNameFunc is registered or
|
|
|
|
|
fmt.Println(err.StructField()) // by passing alt name to ReportError like below
|
|
|
|
|
fmt.Println(err.Namespace()) // can differ when a custom TagNameFunc is registered or
|
|
|
|
|
fmt.Println(err.Field()) // by passing alt name to ReportError like below
|
|
|
|
|
fmt.Println(err.StructNamespace()) |
|
|
|
|
fmt.Println(err.StructField()) |
|
|
|
|
fmt.Println(err.Tag()) |
|
|
|
|
fmt.Println(err.ActualTag()) |
|
|
|
|
fmt.Println(err.Kind()) |
|
|
|
@ -101,8 +112,8 @@ func UserStructLevelValidation(sl validator.StructLevel) { |
|
|
|
|
user := sl.Current().Interface().(User) |
|
|
|
|
|
|
|
|
|
if len(user.FirstName) == 0 && len(user.LastName) == 0 { |
|
|
|
|
sl.ReportError(user.FirstName, "FirstName", "fname", "fnameorlname", "") |
|
|
|
|
sl.ReportError(user.LastName, "LastName", "lname", "fnameorlname", "") |
|
|
|
|
sl.ReportError(user.FirstName, "fname", "FirstName", "fnameorlname", "") |
|
|
|
|
sl.ReportError(user.LastName, "lname", "LastName", "fnameorlname", "") |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// plus can do more, even with different tag than "fnameorlname"
|
|
|
|
|