Golang : Build new URL for named or registered route with Gorilla webtoolkit example
Problem :
Ok, you want to construct a new URL with Gorilla webtoolkit but don't know how. For example, you have a named / registered route HandleFunc()
defined and you want to build a URL based on the named route.
Solution :
Use the Get()
method to retrieve the route base on the route name. Supply the URL()
method with parameters. 1 key to 1 value.
package main
import (
"fmt"
"github.com/gorilla/mux"
"net/http"
)
func SayHelloWorld(w http.ResponseWriter, r *http.Request) {
w.Write([]byte("Hello, World!"))
}
func ProcessPathVariables(w http.ResponseWriter, r *http.Request) {
// break down the variables for easier assignment
vars := mux.Vars(r)
name := vars["name"]
job := vars["job"]
age := vars["age"]
w.Write([]byte(fmt.Sprintf("Name is %s \n", name)))
w.Write([]byte(fmt.Sprintf("Job is %s \n", job)))
w.Write([]byte(fmt.Sprintf("Age is %s \n", age)))
route := mux.CurrentRoute(r)
w.Write([]byte(fmt.Sprintf("Route name is %v \n", route.GetName())))
}
func main() {
mx := mux.NewRouter()
mx.HandleFunc("/", SayHelloWorld).Name("home")
// this route name is person
mx.HandleFunc("/person/{name}/{job}/{age:[0-99]+}", ProcessPathVariables).Name("person")
// get the person route and build a new URL with 1 key to 1 value parameters.
url, err := mx.Get("person").
URL("name", "Boo",
"job", "CEO",
"age", "37")
if err != nil {
fmt.Println(err)
}
builtURL := url.String()
fmt.Printf("URL : %v \n", builtURL)
http.ListenAndServe(":8080", mx)
}
Output :
URL : /person/Boo/CEO/37
References :
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
Tutorials
+20.1k Golang : Record voice(audio) from microphone to .WAV file
+13.5k Golang : Compare floating-point numbers
+3.2k PHP : Hide PHP version information from curl
+7.2k Facebook : Getting the friends list with PHP return JSON format
+4.8k Swift : substringWithRange() function example
+4.8k Golang : Reverse text lines or flip line order example
+3.4k Linux/Unix/PHP : Restart PHP-FPM
+4.9k Golang : Get environment variable
+29.9k Golang : Convert date or time stamp from string to time.Time type
+5.6k Golang : Add text to image and get OpenCV's X, Y co-ordinates example
+9.5k Golang : convert rune to unicode hexadecimal value and back to rune character
+7.9k Golang : How to pass map to html template and access the map's elements