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



Tags : golang gorilla route headers

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

Affiliate :

Hire Golang Developers




Tags : golang gorilla route headers

By Adam Ng

IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.


Advertisement