[BUG] validation of binding is not effective

[aveyuan]

Demo

package main

import "github.com/kataras/iris/v12"

type Person struct {
    Name    string `url:"name,required"`
    Address string `url:"address"`
}

func main() {
    app := iris.Default()
    app.Any("/", index)
    app.Listen(":8080")
}

func index(ctx iris.Context) {
    var person Person
    if err := ctx.ReadQuery(&person); err!=nil {
        ctx.StopWithError(iris.StatusBadRequest, err)
        return
    }

    ctx.Application().Logger().Infof("Person: %#+v", person)
    ctx.WriteString("Success")
}

The reuqest url name is empty. but it tag is required. use ctx.ReadQuery(&person) not return err. validation is not effective ？