Web routing with gorilla/mux

web-routing-gorilla-mux.go

package main

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

func Home(w http.ResponseWriter, r *http.Request) {
    fmt.Fprint(w, "This is the home page")
}

func Article(w http.ResponseWriter, r *http.Request) {
    vars := mux.Vars(r)

    fmt.Fprintf(w, "Article id is %s", vars["id"])
}

func Number(w http.ResponseWriter, r *http.Request) {
    vars := mux.Vars(r)

    fmt.Fprintf(w, "This is number %s", vars["id"])
}

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

    r.HandleFunc("/", Home)
    r.HandleFunc("/article/{id}", Article)      // {id} can be anything
    r.HandleFunc("/number/{id:[0-9]+}", Number) // only match numeric pattern

    log.Fatal(http.ListenAndServe(":3000", r))
}