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package main
import (
"fmt"
"github.com/go-playground/validator/v10"
)
// MyStruct ..
type MyStruct struct {
String string `validate:"is-awesome"`
}
// use a single instance of Validate, it caches struct info
var validate *validator.Validate
func main() {
validate = validator.New()
validate.RegisterValidation("is-awesome", ValidateMyVal)
s := MyStruct{String: "awesome"}
err := validate.Struct(s)
if err != nil {
fmt.Printf("Err(s):\n%+v\n", err)
}
s.String = "not awesome"
err = validate.Struct(s)
if err != nil {
fmt.Printf("Err(s):\n%+v\n", err)
}
}
// ValidateMyVal implements validator.Func
func ValidateMyVal(fl validator.FieldLevel) bool {
return fl.Field().String() == "awesome"
}
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