package validator_test import ( "fmt" "gopkg.in/go-playground/validator.v6" ) func ExampleValidate_new() { config := validator.Config{ TagName: "validate", ValidationFuncs: validator.BakedInValidators, } validator.New(config) } func ExampleValidate_field() { // This should be stored somewhere globally var validate *validator.Validate config := validator.Config{ TagName: "validate", ValidationFuncs: validator.BakedInValidators, } validate = validator.New(config) i := 0 errs := validate.Field(i, "gt=1,lte=10") err := errs[""] fmt.Println(err.Field) fmt.Println(err.Tag) fmt.Println(err.Kind) // NOTE: Kind and Type can be different i.e. time Kind=struct and Type=time.Time fmt.Println(err.Type) fmt.Println(err.Param) fmt.Println(err.Value) //Output: // //gt //int //int //1 //0 } func ExampleValidate_struct() { // This should be stored somewhere globally var validate *validator.Validate config := validator.Config{ TagName: "validate", ValidationFuncs: validator.BakedInValidators, } validate = validator.New(config) type ContactInformation struct { Phone string `validate:"required"` Street string `validate:"required"` City string `validate:"required"` } type User struct { Name string `validate:"required,excludesall=!@#$%^&*()_+-=:;?/0x2C"` // 0x2C = comma (,) Age int8 `validate:"required,gt=0,lt=150"` Email string `validate:"email"` ContactInformation []*ContactInformation } contactInfo := &ContactInformation{ Street: "26 Here Blvd.", City: "Paradeso", } user := &User{ Name: "Joey Bloggs", Age: 31, Email: "joeybloggs@gmail.com", ContactInformation: []*ContactInformation{contactInfo}, } errs := validate.Struct(user) for _, v := range errs { fmt.Println(v.Field) // Phone fmt.Println(v.Tag) // required //... and so forth //Output: //Phone //required } }