validation

e.g. isPassportNumber, etc.

Are you submitting a bug report or a feature request?

Bug? I guess.

What is the current behavior?

Package version eg. v9, v10:

github.com/go-playground/locales v0.13.0
github.com/go-playground/universal-translator v0.17.0
github.com/go-playground/validator/v10 v10.2.0

Issue, Question or Enhancement:

Golangci-lint (https://github.com/golangci/golangci-lint) comes with a errorlint linter (https://github.com/polyfloyd/go-errorlint). When I switched it on, I got this issue f

Describe the bug

https://express-validator.github.io/docs/custom-validators-sanitizers.html

On this page there is an example where it is checked if an email is already in use by accessing a data repository from a validator. Practice like this is bad as you'll only get a validation error if your database connection is dead for example. Proper error handling in such cases could be problemat

type Item struct {
	Bt int `valid:"range(1|100)"`
}

func main() {
	t := Item{-1}
	ok, err := govalidator.ValidateStruct(t)
	fmt.Println(ok, err)
}

output:Bt: Validator range(1|100) doesn't support kind int;

With #235 I've noticed that InstanceOf is undocumented in the readme.