102 lines
2.4 KiB
Go
102 lines
2.4 KiB
Go
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
|
||
|
|
"gin-valid/go-playground/validator/v10"
|
||
|
|
)
|
||
|
|
|
||
|
|
// User contains user information
|
||
|
|
type User struct {
|
||
|
|
FirstName string `validate:"required"`
|
||
|
|
LastName string `validate:"required"`
|
||
|
|
Age uint8 `validate:"gte=0,lte=130"`
|
||
|
|
Email string `validate:"required,email"`
|
||
|
|
FavouriteColor string `validate:"iscolor"` // alias for 'hexcolor|rgb|rgba|hsl|hsla'
|
||
|
|
Addresses []*Address `validate:"required,dive,required"` // a person can have a home and cottage...
|
||
|
|
}
|
||
|
|
|
||
|
|
// Address houses a users address information
|
||
|
|
type Address struct {
|
||
|
|
Street string `validate:"required"`
|
||
|
|
City string `validate:"required"`
|
||
|
|
Planet string `validate:"required"`
|
||
|
|
Phone string `validate:"required"`
|
||
|
|
}
|
||
|
|
|
||
|
|
// use a single instance of Validate, it caches struct info
|
||
|
|
var validate *validator.Validate
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
|
||
|
|
validate = validator.New()
|
||
|
|
|
||
|
|
validateStruct()
|
||
|
|
validateVariable()
|
||
|
|
}
|
||
|
|
|
||
|
|
func validateStruct() {
|
||
|
|
|
||
|
|
address := &Address{
|
||
|
|
Street: "Eavesdown Docks",
|
||
|
|
Planet: "Persphone",
|
||
|
|
Phone: "none",
|
||
|
|
}
|
||
|
|
|
||
|
|
user := &User{
|
||
|
|
FirstName: "Badger",
|
||
|
|
LastName: "Smith",
|
||
|
|
Age: 135,
|
||
|
|
Email: "Badger.Smith@gmail.com",
|
||
|
|
FavouriteColor: "#000-",
|
||
|
|
Addresses: []*Address{address},
|
||
|
|
}
|
||
|
|
|
||
|
|
// returns nil or ValidationErrors ( []FieldError )
|
||
|
|
err := validate.Struct(user)
|
||
|
|
if err != nil {
|
||
|
|
|
||
|
|
// this check is only needed when your code could produce
|
||
|
|
// an invalid value for validation such as interface with nil
|
||
|
|
// value most including myself do not usually have code like this.
|
||
|
|
if _, ok := err.(*validator.InvalidValidationError); ok {
|
||
|
|
fmt.Println(err)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, err := range err.(validator.ValidationErrors) {
|
||
|
|
|
||
|
|
fmt.Println(err.Namespace())
|
||
|
|
fmt.Println(err.Field())
|
||
|
|
fmt.Println(err.StructNamespace())
|
||
|
|
fmt.Println(err.StructField())
|
||
|
|
fmt.Println(err.Tag())
|
||
|
|
fmt.Println(err.ActualTag())
|
||
|
|
fmt.Println(err.Kind())
|
||
|
|
fmt.Println(err.Type())
|
||
|
|
fmt.Println(err.Value())
|
||
|
|
fmt.Println(err.Param())
|
||
|
|
fmt.Println()
|
||
|
|
}
|
||
|
|
|
||
|
|
// from here you can create your own error messages in whatever language you wish
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// save user to database
|
||
|
|
}
|
||
|
|
|
||
|
|
func validateVariable() {
|
||
|
|
|
||
|
|
myEmail := "joeybloggs.gmail.com"
|
||
|
|
|
||
|
|
errs := validate.Var(myEmail, "required,email")
|
||
|
|
|
||
|
|
if errs != nil {
|
||
|
|
fmt.Println(errs) // output: Key: "" Error:Field validation for "" failed on the "email" tag
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// email ok, move on
|
||
|
|
}
|