Presented at GothamGo 11/15/2014. TL;DR - Don't use frameworks, a few choice packages will get you where you want to go.

1. @markbates

2. @markbates

4. www.metacasts.tv
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6. A Quick Story

7. 9 Years Ago…

9. 9 Years Later…

11. Last Year…

13. Rails for Go??

15. Frameworks

16. • Rendering
• Routing
• Middleware
• Authentication
• CORS
• Hot Code Reloading
• Easy DB Access
• “Context” Sharing

23. • Rendering
• Routing
• Middleware
• Authentication
• CORS
• Hot Code Reloading
• Easy DB Access
• “Context” Sharing

24. Packages

25. To Package or Not To Package

26. github.com/codegangsta/negroni

27. r := pat.New()
r.Get("/", HomeHandler)
n := negroni.New(MW1, MW2)
n.Use(MW3)
n.UseHandler(r)
n.Run(":3000")

28. r := pat.New()
r.Get("/", HomeHandler)
n := negroni.Classic()
n.UseHandler(r)
n.Run(":3000")

29. github.com/codegangsta/gin

30. NAME:
gin - A live reload utility for Go web applications.
USAGE:
gin [global options] command [command options] [arguments...]
VERSION:
0.0.0
COMMANDS:
run, r Run the gin proxy in the current working directory
env, e Display environment variables set by the .env file
help, h Shows a list of commands or help for one command
GLOBAL OPTIONS:
--port, -p '3000' port for the proxy server
--appPort, -a '3001' port for the Go web server
--bin, -b 'gin-bin' name of generated binary file
--path, -t '.' Path to watch files from
--help, -h show help
--version, -v print the version

31. github.com/unrolled/render

32. mux.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
w.Write([]byte("Welcome, visit sub pages now."))
})
mux.HandleFunc("/data", func(w http.ResponseWriter, req *http.Request) {
r.Data(w, http.StatusOK, []byte("Some binary data here."))
})
mux.HandleFunc("/json", func(w http.ResponseWriter, req *http.Request) {
r.JSON(w, http.StatusOK, map[string]string{"hello": "json"})
})
mux.HandleFunc("/xml", func(w http.ResponseWriter, req *http.Request) {
r.XML(w, http.StatusOK, ExampleXml{One: "hello", Two: "xml"})
})
mux.HandleFunc("/html", func(w http.ResponseWriter, req *http.Request) {
// Assumes you have a template in ./templates called "example.tmpl"
// $ mkdir -p templates && echo "<h1>Hello {{.}}.</h1>" > templates/example.tmpl
r.HTML(w, http.StatusOK, "example", nil)
})

33. github.com/jmoiron/sqlx

34. query := "INSERT INTO person (first_name, last_name, email) VALUES
(:first_name, :last_name, :email)"
tx.NamedExec(query, &Person{"Jane", "Citizen", "jane.citzen@example.com"})
people := []Person{}
db.Select(&people, "SELECT * FROM person ORDER BY first_name ASC")

35. github.com/fasterness/cors

36. mux := pat.New()
n := negroni.Classic()
n.UseHandler(mux)
c := cors.New(n)
c.AllowHeader("x-authorization")
c.ExposeHeader("x-pagination")
http.ListenAndServe(":3000", c)

37. github.com/markbates/goth

38. goth.UseProviders(
twitter.New("TWITTER_KEY", "TWITTER_SECRET", "http://localhost:3000/auth/twitter/callback"),
facebook.New("FACEBOOK_KEY", "FACEBOOK_SECRET", "http://localhost:3000/auth/facebook/callback"),
)
p := pat.New()
p.Get("/auth/{provider}/callback", func(res http.ResponseWriter, req *http.Request) {
user, err := gothic.CompleteUserAuth(res, req)
if err != nil {
fmt.Fprintln(res, err)
return
}
fmt.Fprintln(res, user.Name)
})
p.Get("/auth/{provider}", gothic.BeginAuthHandler)
http.ListenAndServe(":3000", p)

39. github.com/gorilla/pat

40. r := pat.New()
r.Get("/products", ProductsHandler)
r.Get("/articles", ArticlesHandler)
r.Get("/articles/{category}/{id:[0-9]+}", ArticleHandler)
r.Get("/articles/{category}/", ArticlesCategoryHandler)
r.Post("/articles", ArticlesCreateHandler)
r.Get("/", HomeHandler)
http.Handle("/", r)

41. github.com/gorilla/context

42. func MyHandler(w http.ResponseWriter, r *http.Request) {
context.Set(r, "foo", "bar")
// returns "bar"
val := context.Get(r, "foo")
// returns ("bar", true)
val, ok := context.GetOk(r, "foo")
}

43. www.gorillatoolkit.org

44. Final Thoughts

45. • Rendering
• Routing
• Middleware
• Authentication
• CORS
• Hot Code Reloading
• Easy DB Access
• “Context” Sharing

46. Who Needs a
Framework?

47. www.metacasts.tv
GOTHAMGO14
50% off first month
@markbates