prefixhandler

README

prefixhandler

Path Prefix Handler for http.ServeMux

Example

package main

import (
    "io"
    "net/http"

    "github.com/acoshift/prefixhandler"
)

func main() {
    mux := http.NewServeMux()

    itemMux := http.NewServeMux()
    itemMux.Handle("/", http.HandlerFunc(itemDetail))
    itemMux.Handle("/edit", http.HandlerFunc(itemEdit))

    mux.Handle("/item", http.NotFoundHandler())
    mux.Handle("/item/", prefixhandler.New("/item", "item_id", itemMux))

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

func itemDetail(w http.ResponseWriter, r *http.Request) {
    if r.URL.Path != "/" {
        http.NotFound(w, r)
        return
    }

    itemID := prefixhandler.Get(r.Context(), "item_id")
    // or
    // itemID = r.Context().Value("item_id").(string)

    if itemID == "" {
        http.NotFound(w, r)
        return
    }

    io.WriteString(w, "Item: "+itemID)
}

func itemEdit(w http.ResponseWriter, r *http.Request) {
    itemID := prefixhandler.Get(r.Context(), "item_id")
    io.WriteString(w, "Editing Item: "+itemID)
}

Documentation

Index

• func Get(ctx context.Context, ctxKey interface{}) string
• func New(prefix string, ctxKey interface{}, h http.Handler) http.Handler

Functions

func Get

func Get(ctx context.Context, ctxKey interface{}) string

Get gets prefix from context key

func New

func New(prefix string, ctxKey interface{}, h http.Handler) http.Handler

New creates new prefix handler