walking-routes.md

Walking Routes

The Walk function on mux.Router can be used to visit all the routes that are registered on a router. For example, the following prints all the registered routes:

package main

import (
	"fmt"
	"net/http"
	"strings"

	mux "github.com/vaguecoder/gorilla-mux"
)

func handler(w http.ResponseWriter, r *http.Request) {
	return
}

func main() {
	r := mux.NewRouter()
	r.HandleFunc("/", handler)
	r.HandleFunc("/products", handler).Methods("POST")
	r.HandleFunc("/articles", handler).Methods("GET")
	r.HandleFunc("/articles/{id}", handler).Methods("GET", "PUT")
	r.HandleFunc("/authors", handler).Queries("surname", "{surname}")
	err := r.Walk(func(route *mux.Route, router *mux.Router, ancestors []*mux.Route) error {
		pathTemplate, err := route.GetPathTemplate()
		if err == nil {
			fmt.Println("ROUTE:", pathTemplate)
		}
		pathRegexp, err := route.GetPathRegexp()
		if err == nil {
			fmt.Println("Path regexp:", pathRegexp)
		}
		queriesTemplates, err := route.GetQueriesTemplates()
		if err == nil {
			fmt.Println("Queries templates:", strings.Join(queriesTemplates, ","))
		}
		queriesRegexps, err := route.GetQueriesRegexp()
		if err == nil {
			fmt.Println("Queries regexps:", strings.Join(queriesRegexps, ","))
		}
		methods, err := route.GetMethods()
		if err == nil {
			fmt.Println("Methods:", strings.Join(methods, ","))
		}
		fmt.Println()
		return nil
	})

	if err != nil {
		fmt.Println(err)
	}

	http.Handle("/", r)
}