go htmx and sse example

WBOY
Release: 2024-08-28 06:34:33
Original
1018 people have browsed it

go htmx and sse example

This example demonstrates how to replace few blocks on event for example "post with id 1 changed" ( post-1-changed ) and trigger to load content via ajax request on "chatter" event.

package main

import (
    "fmt"
    "net/http"
    "time"

    "github.com/r3labs/sse/v2"
)

func main() {
    server := sse.New()
    _ = server.CreateStream("messages")

    mux := http.NewServeMux()
    mux.HandleFunc("/events", func(w http.ResponseWriter, r *http.Request) {

        // la security
        token := r.URL.Query().Get("token")
        if token != "secret" {
            http.Error(w, "invalid token", http.StatusUnauthorized)
            return
        }
        go func() {
            <-r.Context().Done()
            println("The client is disconnected here")
            return
        }()

        server.ServeHTTP(w, r)
    })

    mux.HandleFunc("/chatroom", func(w http.ResponseWriter, r *http.Request) {
        w.Write([]byte(`<div>Hello from chat room</div>`))
    })

    mux.HandleFunc("/index", func(w http.ResponseWriter, r *http.Request) {
        w.Write([]byte(`
        <html>
        <head>
        <script src="https://unpkg.com/htmx.org@2.0.2/dist/htmx.js"></script>
        <script src="https://unpkg.com/htmx-ext-sse@2.2.2/sse.js"></script>
        </head>
        <body hx-ext="sse" sse-connect="/events?stream=messages&token=secret">
        <div >
            <div sse-swap="post-1-changed">one</div>
        </div>
        <div>
            <div sse-swap="post-1-changed">one</div>
        </div>
        <div>
            <div sse-swap="post-1-changed">one</div>
        </div>
        <div>
            <div sse-swap="notifications">one</div>
        </div>
        <div>
            <div hx-get="/chatroom" hx-trigger="sse:chatter">
                chat body reloaded
            </div>
        </div>
        </body></html>
        `))
    })

    go func() {
        i := 0
        for {
            i++
            time.Sleep(1 * time.Second)

            server.TryPublish("messages", &sse.Event{
                ID:    []byte(fmt.Sprintf("%d", i)),
                Event: []byte("post-1-changed"),
                Data:  []byte(`<div>Hello from sse ` + fmt.Sprintf("%d", i) + `</div>`),
            })

            server.TryPublish("messages", &sse.Event{
                ID:    []byte(fmt.Sprintf("%d", i)),
                Event: []byte("notifications"),
                Data:  []byte(`<div>Hello from post 2 sse ` + fmt.Sprintf("%d", i) + `</div>`),
            })

            server.TryPublish("messages", &sse.Event{
                ID:    []byte(fmt.Sprintf("%d", i)),
                Event: []byte("chatter"),
                Data:  []byte(`<div></div>`),
            })
            server.EventTTL = 5 * time.Second
        }
    }()

    http.ListenAndServe(":9999", mux)
}


Copy after login

The above is the detailed content of go htmx and sse example. For more information, please follow other related articles on the PHP Chinese website!

source:dev.to
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!