Executable example for FaunaDB Go release blog post

example.go

package main

import (
	"fmt"

	f "github.com/faunadb/faunadb-go/faunadb"
)

// I guess we can blog about how easy is to integrate your data structures with fauna using the go driver
// which, in my opinion, is one of the easiest so far.

// A todo example was the simples I could find, although it has been used a lot already.

var (
	client    *f.FaunaClient
	dataField = f.ObjKey("data")
)

func init() {
	secret := setupDB() // We should ignore this function call and hardcode a fake secret. DB setup is tedious and should not make to blog posts i think.
	client = f.NewFaunaClient(secret, f.Endpoint("http://localhost:8443"))
}

// This is the cool stuff. You can mark the fields and let the driver decode from fauna values to your own type.
type Pet struct {
	Name string `fauna:"name"`
	Age  int    `fauna:"age"`
}

func main() {
	// Create

	bob := Pet{
		Name: "bob the cat",
		Age:  5,
	}

	client.Query(
		f.Create(
			f.Class("pets"),
			f.Obj{"data": bob},
		),
	)

	// Find

	res, _ := client.Query(
		f.Get(
			f.MatchTerm(
				f.Index("pet_by_name"),
				"bob the cat",
			),
		),
	)

	var pet Pet

	res.At(dataField).Get(&pet)
	fmt.Println(pet) // Prints: {bob the cat, 5}
}

func setupDB() (secret string) { // paste your secret here
	adminClient := f.NewFaunaClient("secret", f.Endpoint("http://localhost:8443"))

	adminClient.Query(f.Delete(f.Ref("databases/db-test")))
	adminClient.Query(f.CreateDatabase(f.Obj{"name": "db-test"}))
	res, _ := adminClient.Query(f.CreateKey(f.Obj{"role": "server", "database": f.Database("db-test")}))

	res.At(f.ObjKey("secret")).Get(&secret)

	client := adminClient.NewSessionClient(secret)
	client.Query(f.CreateClass(f.Obj{"name": "pets"}))
	client.Query(f.CreateIndex(f.Obj{
		"name":   "pet_by_name",
		"source": f.Class("pets"),
		"terms":  f.Arr{f.Obj{"field": f.Arr{"data", "name"}}},
		"unique": true,
	}))

	return
}