formspec

Overview ¶

Package github.com/ToQoz/formspec validates a form. So it will expresses **spec** for form. This is generally used in http.Handler, but you can use *formspec.Result as a retuen value of your validation func in models.

ExampleApp: https://github.com/ToQoz/go-formspec/tree/master/_example

Simple usage in http.Handler.

package main

import (
	"fmt"
	"github.com/ToQoz/go-formspec"
	"log"
	"net/http"
)

func main() {
	s := formspec.New()
	s.Rule("name", formspec.RuleRequired())
	s.Rule("age", formspec.RuleInt()).Message("must be integer. ok?").AllowBlank()
	s.Rule("nick", formspec.RuleRequired()).FullMessage("Please enter your cool nickname.")

	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		vr := s.Validate(r)

		if !vr.Ok {
			w.WriteHeader(403)

			for _, verr := range vr.Errors {
				w.Write([]byte(fmt.Sprintf("Validation error in %s. %s\n", verr.Field, verr.Message)))
			}

			return
		}

		w.Write([]byte("ok"))
	})

	log.Fatal(http.ListenAndServe(":8888", nil))
}