vvakame / golidator

go-validator/validator like validator

golidator

The programable validator.

Description

Existing validator is not fully flexible. We want to customize error object generation. We want to modify value instead of raise error when validation failed. We want it.

Samples

see usage

Basic usage

v := golidator.NewValidator()
err := v.Validate(obj)

Use Custom Validator

v := golidator.NewValidator()
v.SetValidationFunc("req", func(t *validator.Target, param string) error {
    val := t.FieldValue
    if str := val.String(); str == "" {
        return fmt.Errorf("unexpected value: %s", str)
    }

    return nil
})

Use Customized Error

v := &golidator.Validator{}
v.SetTag("validate")
v.SetValidationFunc("req", validator.ReqFactory(&validator.ReqErrorOption{
    ReqError: func(f reflect.StructField, actual interface{}) error {
        return fmt.Errorf("%s IS REQUIRED", f.Name)
    },
}))