Example showing OldValue and NewValue empty

main.go

package main

import (
	"log"

	r "github.com/dancannon/gorethink"
	"github.com/davecgh/go-spew/spew"
)

type Blah struct {
	Id   int    `gorethink:"id,omitempty"`
	Name string `gorethink:"name"`
}

func main() {
	s, err := r.Connect(r.ConnectOpts{
		Address: "localhost:28015",
	})
	if err != nil {
		log.Fatal(err)
	}

	// Ignore errors here for the sake of brevity.
	r.DbCreate("test").RunWrite(s)
	r.Db("test").TableCreate("blah").RunWrite(s)
	r.Db("test").Table("blah").Delete().RunWrite(s)

	log.Print("Testing insert")
	wr, err := r.Db("test").Table("blah").Insert(Blah{
		Id:   1,
		Name: "hello",
	}, r.InsertOpts{
		ReturnChanges: true,
	}).RunWrite(s)
	if err != nil {
		log.Fatal(err)
	}
	spew.Dump(wr)
	if wr.Inserted == 0 {
		log.Printf("None were inserted", wr)
	}
	if wr.OldValue != nil {
		log.Print("Old value was returned when it shouldn't have been")
	}
	if wr.NewValue == nil {
		log.Print("New value was not returned")
	}

	log.Print("Testing update")
	wr, err = r.Db("test").Table("blah").Limit(1).Update(Blah{
		Id:   1,
		Name: "hello2",
	}, r.UpdateOpts{
		ReturnChanges: true,
	}).RunWrite(s)
	if err != nil {
		log.Fatal(err)
	}
	spew.Dump(wr)
	if wr.Replaced == 0 {
		log.Printf("None were updated", wr)
	}
	if wr.OldValue == nil {
		log.Print("Old value was not returned")
	}
	if wr.NewValue == nil {
		log.Print("New value was not returned")
	}

	log.Print("Testing replace")
	wr, err = r.Db("test").Table("blah").Limit(1).Replace(Blah{
		Id:   1,
		Name: "hello3",
	}, r.ReplaceOpts{
		ReturnChanges: true,
	}).RunWrite(s)
	if err != nil {
		log.Fatal(err)
	}
	spew.Dump(wr)
	if wr.Replaced == 0 {
		log.Printf("None were replaced", wr)
	}
	if wr.OldValue == nil {
		log.Print("Old value was not returned")
	}
	if wr.NewValue == nil {
		log.Print("New value was not returned")
	}

	log.Print("Testing Delete")
	wr, err = r.Db("test").Table("blah").Limit(1).Delete(r.DeleteOpts{
		ReturnChanges: true,
	}).RunWrite(s)
	if err != nil {
		log.Fatal(err)
	}
	spew.Dump(wr)
	if wr.Deleted == 0 {
		log.Print("None were deleted", wr)
	}
	if wr.OldValue == nil {
		log.Print("Old value was not returned")
	}
	if wr.NewValue != nil {
		log.Print("New value was returned when it shouldn't have been")
	}
}