Golang : Example of custom handler for Gorilla's Path usage.

In Gorilla WebToolkit's official documentation, the code fragment given in http://www.gorillatoolkit.org/pkg/mux#Route.Path does not show how to create custom handler to use together with Path() function.

 r := mux.NewRouter()
 r.Path("/products/").Handler(ProductsHandler)
 r.Path("/products/{key}").Handler(ProductsHandler)
 r.Path("/articles/{category}/{id:[0-9]+}").
 Handler(ArticleHandler)

This tutorial will demonstrate how to create custom handler for Path() function. In this example, a custom http.Handler type must have a ServeHTTP method, otherwise the compiler will not compile the code.

 package main

 import (
 "github.com/gorilla/mux"
 "net/http"
 "fmt"
 )

 type greetHandler struct {
 gmux http.Handler 
 }

 func (g *greetHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 //w.Write([]byte("Hello from greetHandler's ServeHTTP"))

 name := mux.Vars(r)["name"]
 w.Write([]byte(fmt.Sprintf("Hello %s from greetHandler's ServeHTTP! ", name)))
 }

 func main() {
 mx := mux.NewRouter()

 // bind gmux to mx(route)
 ghandler := &greetHandler{gmux : mx} 

 mx.Path("/{name}").Handler(ghandler)

 http.ListenAndServe(":8080", mx)
 }

Hope this helps!

References :

http://www.gorillatoolkit.org/pkg/mux#Route.Path