Bug: schema.Array{} returning "gob type not registered for interface error" using memory storage

[ultimateboy]

I'm having issues getting an array field to work as expected. Any help would be greatly appreciated. I've tried a number of different ValuesValidators and get similar results with each.

Steps to reproduce:

1. Create a simple schema with a &schema.Array{} field
2. Submit a POST with a list of values into the list field

Expected Outcome:

Entity saved correctly

Actual Outcome:

Error: "gob: type not registered for interface: []interface {}"

Sample Code:

package main

import (
	"log"
	"net/http"

	"github.com/justinas/alice"

	mem "github.com/rs/rest-layer-mem"
	"github.com/rs/rest-layer/resource"
	"github.com/rs/rest-layer/rest"
	"github.com/rs/rest-layer/schema"
)

var (
	fooSchema = schema.Schema{
		Description: `A foo object`,
		Fields: schema.Fields{
			"id": schema.IDField,
			"name": {
				Required:   true,
				Filterable: true,
				Validator: &schema.String{
					MaxLen: 150,
				},
			},
			"list": {
				Validator: &schema.Array{
					ValuesValidator: &schema.String{},
				},
			},
		},
	}
)

func main() {
	resource.LoggerLevel = resource.LogLevelDebug

	index := resource.NewIndex()

	fooHandler := mem.NewHandler()
	_ = index.Bind("foo", fooSchema, fooHandler, resource.Conf{
		AllowedModes: resource.ReadWrite,
	})

	api, err := rest.NewHandler(index)
	if err != nil {
		log.Fatalf("Invalid API configuration: %s", err)
	}

	c := alice.New()
	http.Handle("/", c.Then(api))

	log.Print("Serving API on http://localhost:8080")
	if err := http.ListenAndServe(":8080", nil); err != nil {
		log.Fatal(err)
	}
}

Sample of error:

$ http post :8080/foo name="test" list:='["a","b"]'
HTTP/1.1 520 status code 520
Content-Length: 79
Content-Type: application/json
Date: Tue, 03 Jan 2017 21:17:32 GMT

{
    "code": 520,
    "message": "gob: type not registered for interface: []interface {}"
}

[smyrman]

I can reproduce this (using curl):

curl -X POST -H Content-Type:"application/json" -d '{"name": "test", "list": ["a", "b"]}' http://localhost:8080/foo

It appears to be an easy fix, I will attempt to do a PR for it.

[ultimateboy]

Confirmed the PR provided by smyrman in rs/rest-layer-mem#3 fixes this issue. Closing in favor of that PR.

Thanks!