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69 lines
2.0 KiB
69 lines
2.0 KiB
package web_test
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import (
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"fmt"
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"log"
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"net/http"
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"regexp"
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"github.com/zenazn/goji/web"
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"github.com/zenazn/goji/web/middleware"
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)
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func Example() {
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m := web.New()
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// Use your favorite HTTP verbs and the interfaces you know and love
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// from net/http:
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m.Get("/hello", func(w http.ResponseWriter, r *http.Request) {
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fmt.Fprintf(w, "Why hello there!\n")
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})
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m.Post("/login", func(w http.ResponseWriter, r *http.Request) {
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if r.FormValue("password") != "god" {
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http.Error(w, "Hack the planet!", 401)
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}
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})
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// Handlers can optionally take a context parameter, which contains
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// (among other things) a set of bound parameters.
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hello := func(c web.C, w http.ResponseWriter, r *http.Request) {
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fmt.Fprintf(w, "Hello, %s!\n", c.URLParams["name"])
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}
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// Bind parameters using pattern strings...
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m.Get("/hello/:name", hello)
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// ...or use regular expressions if you need additional power.
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bonjour := regexp.MustCompile(`^/bonjour/(?P<name>[A-Za-z]+)$`)
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m.Get(bonjour, hello)
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// Middleware are a great abstraction for performing logic on every
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// request. Some middleware use the Goji context object to set
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// request-scoped variables.
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logger := func(h http.Handler) http.Handler {
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wrap := func(w http.ResponseWriter, r *http.Request) {
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log.Println("Before request")
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h.ServeHTTP(w, r)
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log.Println("After request")
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}
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return http.HandlerFunc(wrap)
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}
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auth := func(c *web.C, h http.Handler) http.Handler {
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wrap := func(w http.ResponseWriter, r *http.Request) {
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if cookie, err := r.Cookie("user"); err == nil {
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c.Env["user"] = cookie.Value
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}
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h.ServeHTTP(w, r)
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}
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return http.HandlerFunc(wrap)
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}
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// A Middleware stack is a flexible way to assemble the common
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// components of your application, like request loggers and
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// authentication. There is an ecosystem of open-source middleware for
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// Goji, so there's a chance someone has already written the middleware
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// you are looking for!
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m.Use(middleware.EnvInit)
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m.Use(logger)
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m.Use(auth)
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}
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