Gin: Custom validator function

[Gobonoid]

Hi I wonder if there is a way to write custom validator function as straight usage of v8 provides (gin use it for validation while binding, right? https://godoc.org/gopkg.in/go-playground/validator.v8)

Or is there a way to overwrite a validator used by gin??

[nazwa]

If I remember correctly, you can specify your own validator object. Can't test it right now, but it should be something like:

gin.Validator = &myObj

But at the same time, you should be able to use all the features of v8 as you normally would with the default implementation. It's quite flexible.

[Gobonoid]

Hello again.
gin.Validator = validator.New(validator.Config{TagName: "binding"})

Doesn't work

I can use all v8 features apart from adding custom validator as it require access to validate structure.

[Gobonoid]

Found it!

import val "gopkg.in/go-playground/validator.v8"

func main() {
binding.Validator = &Validator{val.New(&val.Config{TagName: "validate"})}
engine := gin.Default()
}

type Validator struct {
*val.Validate
}

func (v *Validator) ValidateStruct(i interface{}) error {
return v.Struct(i)
}

[lijinya]

github.com/gin-gonic/gin/binding

binding/default_validator.go:29: undefined: validator.Config
binding/default_validator.go:30: too many arguments in call to validator.New
have ()
want ()

[NewbMiao]

@lijinya Current gin use v8.18.1 of gopkg.in/go-playground/validator.v8, u may fix it by reinstall this package

[vbmade2000]

Tried reinstallinng gopkg.in/go-playground/validator.v8. Also fetched master branch of gin but still facing same issue.

github.com/vbmade2000/contacti/vendor/github.com/gin-gonic/gin/binding
vendor/github.com/gin-gonic/gin/binding/default_validator.go:38:14: undefined: validator.Config
vendor/github.com/gin-gonic/gin/binding/default_validator.go:39:29: too many arguments in call to validator.New

[richzw]

It seems the gopkg.in/go-playground/validator.v9 is download when to get gin. I got one way to solve it through glide. And set glide.yaml as below

- package: gopkg.in/go-playground/validator.v8
  version: ~8.18.1
- package: github.com/gin-gonic/gin
  version: ^1.2.0
- package: github.com/gin-contrib/sse