A json validation library.
- Get json value and validate json at the same time.
- Concise usage.
- Practical error handling.
- Customizable error message.
- Optional fields and default value
- Disallow extra object fields
- User defined validators
- Customizable error message
package main
import (
"fmt"
"github.com/golopot/vv"
)
func main() {
v := vv.New([]byte(`
{
"a": 1,
"b": "sss"
}
`))
a := v.Int("a").Done()
z := v.String("z").Default("some-string").Done() // `z` is optional
wrong := v.Int("wrong").Done() // fails validation
fmt.Println(a, z, wrong) // 1 "some-string" 0
// v.ValidationError() stores the first error occured
if err := v.ValidationError(); err != nil {
fmt.Println("error:", err)
// error: property `wrong` should be int
return
}
}MIT