validating's Introduction

validating

A Go library for validating structs, maps and slices.

Features

Simple

Simple and stupid, no magic involved.
Type-safe

Schema is defined in Go, which is type-safer (and more powerful) than traditional struct tags.
Flexible
- Validators are composable.
- Nested struct validation is well supported.
- Schema can be defined inside or outside struct.
- Validator customizations are made easy.
No reflection

Installation

$ go get github.com/RussellLuo/validating/v3@latest

Validator factories and validators

To be strict, this library has a conceptual distinction between validator factory and validator.

A validator factory is a function used to create a validator, which will do the actual validation.

Built-in validator factories

Extension validator factories

vext

Validator customizations

Examples

Documentation

Check out the Godoc.

Thanks

This library borrows some ideas from the following libraries:

mholt/binding

Prefer no reflection.
alecthomas/voluptuous

Support composite validator factories All/And, Any/Or.
go-validator/validator

Use the term nonzero instead of required/optional.

License

MIT

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validating's Issues

[validator] would it be ok to have more business oriented validators?

Hello !

First of all, thanks a lot for this library ! :)

I was wondering if you would be open to PR introducing more business oriented validators to be used by higher level applications. I a; think of validators such as:

email
phone number
website
etc

If it makes sense to you, I am whiling to work on this PR :)

Thanks !

option to skip validation on nested struct if value is nil

There should be an option to skip validation of a nested struct if the nested struct's value is nil.

Enrich error messages

Any chance you could extend MessageValidator with a function where I can set a custom error instead of just a string? So in addition to .Msg(s string) something like .Err(err error)? My errors contain additional information which would allow me further processing after validation.

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