[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"academy-blogs-th-1-1-all-pinned-messages-websocket-chat-all--*":3,"academy-blog-translations-3ntbs0bnwdc7lq4":99},{"data":4,"page":87,"perPage":87,"totalItems":87,"totalPages":87},[5],{"alt":6,"collectionId":7,"collectionName":8,"content":9,"cover_image":10,"cover_image_path":11,"created":12,"created_by":13,"expand":14,"id":93,"keywords":94,"locale":69,"published_at":95,"scheduled_at":13,"school_blog":91,"short_description":96,"slug":97,"status":89,"title":6,"updated":98,"updated_by":13,"views":92},"EP.43 การเพิ่มฟีเจอร์ปักหมุดข้อความ (Pinned Messages) ใน WebSocket Chat","sclblg987654321","school_blog_translations","\u003Ch3 data-pm-slice=\"1 1 []\">\u003Cspan>\u003Cstrong>ทำไมต้องมีฟีเจอร์ปักหมุดข้อความ?\u003C\u002Fstrong>\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp>\u003Cspan>\u003Cstrong>Pinned Messages\u003C\u002Fstrong> หรือ \u003Cstrong>การปักหมุดข้อความ\u003C\u002Fstrong> เป็นฟีเจอร์ที่ช่วยให้ผู้ใช้สามารถเก็บข้อความสำคัญไว้ดูภายหลังได้ โดยมีประโยชน์ดังนี้:\u003C\u002Fspan>\u003C\u002Fp>\u003Cul data-spread=\"false\">\u003Cli>\u003Cspan>\u003Cstrong>ช่วยให้ข้อความสำคัญไม่สูญหาย\u003C\u002Fstrong> ในการสนทนาที่มีปริมาณข้อความมาก\u003C\u002Fspan>\u003C\u002Fli>\u003Cli>\u003Cspan>\u003Cstrong>ใช้เป็นช่องทางประกาศสำคัญ\u003C\u002Fstrong> สำหรับกลุ่มหรือทีมงาน\u003C\u002Fspan>\u003C\u002Fli>\u003Cli>\u003Cspan>\u003Cstrong>ช่วยให้ผู้ใช้สามารถเข้าถึงข้อมูลสำคัญได้ง่ายขึ้น\u003C\u002Fstrong>\u003C\u002Fspan>\u003C\u002Fli>\u003C\u002Ful>\u003Ch3>\u003Cspan>\u003Cstrong>โครงสร้างของระบบปักหมุดข้อความใน WebSocket Chat\u003C\u002Fstrong>\u003C\u002Fspan>\u003C\u002Fh3>\u003Col data-spread=\"false\">\u003Cli>\u003Cspan>\u003Cstrong>WebSocket Server\u003C\u002Fstrong> - รับและส่งสถานะการปักหมุดข้อความ\u003C\u002Fspan>\u003C\u002Fli>\u003Cli>\u003Cspan>\u003Cstrong>Database\u003C\u002Fstrong> - เก็บข้อมูลข้อความที่ถูกปักหมุด\u003C\u002Fspan>\u003C\u002Fli>\u003Cli>\u003Cspan>\u003Cstrong>Frontend (Client-Side)\u003C\u002Fstrong> - แสดงรายการข้อความที่ถูกปักหมุดให้ผู้ใช้\u003C\u002Fspan>\u003C\u002Fli>\u003C\u002Fol>\u003Ch3>\u003Cspan>\u003Cstrong>การเพิ่มฟีเจอร์ Pinned Messages ใน WebSocket Server\u003C\u002Fstrong>\u003C\u002Fspan>\u003C\u002Fh3>\u003Ch4>\u003Cspan>\u003Cstrong>1. อัปเกรด WebSocket Server ให้รองรับ Pinned Messages\u003C\u002Fstrong>\u003C\u002Fspan>\u003C\u002Fh4>\u003Cp>\u003Cspan>ไฟล์ \u003C\u002Fspan>\u003Ccode>\u003Cspan>websocket_server.go\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-plaintext\">package main\n\nimport (\n    \"encoding\u002Fjson\"\n    \"fmt\"\n    \"net\u002Fhttp\"\n    \"sync\"\n\n    \"github.com\u002Fgorilla\u002Fwebsocket\"\n)\n\ntype PinnedMessage struct {\n    MessageID int    `json:\"messageID\"`\n    RoomID    int    `json:\"roomID\"`\n    PinnedBy  string `json:\"pinnedBy\"`\n}\n\nvar upgrader = websocket.Upgrader{\n    CheckOrigin: func(r *http.Request) bool { return true },\n}\n\nvar (\n    clients   = make(map[*websocket.Conn]bool)\n    pinned    = make(map[int]PinnedMessage)\n    broadcast = make(chan PinnedMessage)\n    mu        sync.Mutex\n)\n\nfunc handleConnections(w http.ResponseWriter, r *http.Request) {\n    conn, _ := upgrader.Upgrade(w, r, nil)\n    defer conn.Close()\n    clients[conn] = true\n\n    for {\n        var pinnedMsg PinnedMessage\n        err := conn.ReadJSON(&pinnedMsg)\n        if err != nil {\n            delete(clients, conn)\n            break\n        }\n        broadcast <- pinnedMsg\n    }\n}\n\nfunc handleMessages() {\n    for {\n        pinnedMsg := <-broadcast\n        mu.Lock()\n        pinned[pinnedMsg.MessageID] = pinnedMsg\n        mu.Unlock()\n        \n        for client := range clients {\n            err := client.WriteJSON(pinnedMsg)\n            if err != nil {\n                client.Close()\n                delete(clients, client)\n            }\n        }\n    }\n}\n\nfunc main() {\n    http.HandleFunc(\"\u002Fws\", handleConnections)\n    go handleMessages()\n    fmt.Println(\"WebSocket Server Running on Port 8080\")\n    http.ListenAndServe(\":8080\", nil)\n}\u003C\u002Fcode>\u003C\u002Fpre>\u003Ch3 data-pm-slice=\"1 1 []\">\u003Cspan>\u003Cstrong>2. การเพิ่มฟังก์ชัน Pinned Messages ใน Frontend (Client-Side)\u003C\u002Fstrong>\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp>\u003Cspan>ไฟล์ \u003C\u002Fspan>\u003Ccode>\u003Cspan>client.js\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-plaintext\">const socket = new WebSocket(\"ws:\u002F\u002Flocalhost:8080\u002Fws\");\nconst pinnedContainer = document.getElementById(\"pinned-messages\");\n\nsocket.onmessage = (event) => {\n    const data = JSON.parse(event.data);\n    if (data.messageID) {\n        const pinnedElement = document.createElement(\"p\");\n        pinnedElement.innerText = `Pinned Message: ${data.messageID} by ${data.pinnedBy}`;\n        pinnedContainer.appendChild(pinnedElement);\n    }\n};\n\nfunction pinMessage(messageID) {\n    socket.send(JSON.stringify({ roomID: 1, messageID, pinnedBy: \"JohnDoe\" }));\n}\u003C\u002Fcode>\u003C\u002Fpre>\u003Ch3 data-pm-slice=\"1 1 []\">\u003Cspan>\u003Cstrong>การแสดง Pinned Messages บน UI\u003C\u002Fstrong>\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp>\u003Cspan>ไฟล์ \u003C\u002Fspan>\u003Ccode>\u003Cspan>index.html\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-plaintext\"><div id=\"pinned-messages\"><\u002Fdiv>\n<button onclick=\"pinMessage(1)\">Pin Message 1<\u002Fbutton>\u003C\u002Fcode>\u003C\u002Fpre>\u003Ch3 data-pm-slice=\"1 1 []\">\u003Cspan>\u003Cstrong>3. การทดสอบระบบ\u003C\u002Fstrong>\u003C\u002Fspan>\u003C\u002Fh3>\u003Col data-spread=\"false\">\u003Cli>\u003Cspan>\u003Cstrong>รัน WebSocket Server\u003C\u002Fstrong>\u003C\u002Fspan>\u003C\u002Fli>\u003C\u002Fol>\u003Cpre>\u003Ccode class=\"language-plaintext\">go run websocket_server.go\u003C\u002Fcode>\u003C\u002Fpre>\u003Col data-spread=\"false\" start=\"2\">\u003Cli>\u003Cspan>\u003Cstrong>เปิดหน้าเว็บหลายแท็บแล้วปักหมุดข้อความ\u003C\u002Fstrong>\u003C\u002Fspan>\u003C\u002Fli>\u003Cli>\u003Cspan>\u003Cstrong>ดูผลลัพธ์ที่ WebSocket Server และ UI\u003C\u002Fstrong>\u003C\u002Fspan>\u003C\u002Fli>\u003C\u002Fol>\u003Ch3>\u003Cspan>\u003Cstrong>ท้าให้ลอง!\u003C\u002Fstrong>\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp>\u003Cspan>ลองเพิ่ม \u003Cstrong>ระบบยกเลิกการปักหมุด (Unpin Messages)\u003C\u002Fstrong> เพื่อให้ผู้ใช้สามารถปลดหมุดข้อความที่ไม่ต้องการแล้วได้\u003C\u002Fspan>\u003C\u002Fp>\u003Chr>\u003Ch3>\u003Cspan>\u003Cstrong>EP ถัดไป\u003C\u002Fstrong>\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp>\u003Cspan>ใน \u003Cstrong>EP.44\u003C\u002Fstrong>, เราจะเพิ่ม \u003Cstrong>ฟีเจอร์แสดงจำนวนผู้ใช้ที่ออนไลน์ใน WebSocket Chat\u003C\u002Fstrong> 🚀\u003C\u002Fspan>\u003C\u002Fp>","57_11zon_ecoltakj2w.webp","https:\u002F\u002Ftwsme-r2.tumwebsme.com\u002Fsclblg987654321\u002Ff4l95lly7crttk6\u002F57_11zon_ecoltakj2w.webp","2026-03-04 08:51:00.037Z","",{"keywords":15,"locale":63,"school_blog":73},[16,23,28,33,38,43,48,53,58],{"collectionId":17,"collectionName":18,"created":19,"created_by":13,"id":20,"name":21,"updated":22,"updated_by":13},"sclkey987654321","school_keywords","2026-03-04 08:50:59.287Z","wg8gajk96i2keaj","Chat Management","2026-04-10 16:14:30.711Z",{"collectionId":17,"collectionName":18,"created":24,"created_by":13,"id":25,"name":26,"updated":27,"updated_by":13},"2026-03-04 08:50:49.558Z","8lxakhujb04wz6u","Chat UX","2026-04-10 16:14:28.724Z",{"collectionId":17,"collectionName":18,"created":29,"created_by":13,"id":30,"name":31,"updated":32,"updated_by":13},"2026-03-04 08:50:59.507Z","ntfm42v1phime84","Pinned Chats","2026-04-10 16:14:30.841Z",{"collectionId":17,"collectionName":18,"created":34,"created_by":13,"id":35,"name":36,"updated":37,"updated_by":13},"2026-03-04 08:48:07.088Z","brfbypclggbbkcx","WebSocket API","2026-04-10 16:13:40.594Z",{"collectionId":17,"collectionName":18,"created":39,"created_by":13,"id":40,"name":41,"updated":42,"updated_by":13},"2026-03-04 08:47:05.949Z","caufix9o52uw4bh","Real-Time Chat","2026-04-10 16:13:23.517Z",{"collectionId":17,"collectionName":18,"created":44,"created_by":13,"id":45,"name":46,"updated":47,"updated_by":13},"2026-03-04 08:20:14.253Z","ah6lvy4x8qe08l5","Golang","2026-04-10 16:07:26.172Z",{"collectionId":17,"collectionName":18,"created":49,"created_by":13,"id":50,"name":51,"updated":52,"updated_by":13},"2026-03-04 08:20:11.547Z","ey3puyme01a9bsw","Go","2026-04-10 16:07:25.893Z",{"collectionId":17,"collectionName":18,"created":54,"created_by":13,"id":55,"name":56,"updated":57,"updated_by":13},"2026-03-04 08:34:00.920Z","ecac9y661or1xka","WebSocket","2026-04-10 16:08:05.227Z",{"collectionId":17,"collectionName":18,"created":59,"created_by":13,"id":60,"name":61,"updated":62,"updated_by":13},"2026-03-04 08:48:45.418Z","so81vnxshuuiu6h","Pinned Messages","2026-04-10 16:13:53.685Z",{"code":64,"collectionId":65,"collectionName":66,"created":67,"flag":68,"id":69,"is_default":70,"label":71,"updated":72},"th","pbc_1989393366","locales","2026-01-22 10:59:55.832Z","twemoji:flag-thailand","s8wri3bt4vgg2ji",true,"Thai","2026-04-10 15:42:46.614Z",{"category":74,"collectionId":75,"collectionName":76,"expand":77,"id":91,"views":92},"wqxt7ag2gn7xcmk","pbc_2105096300","school_blogs",{"category":78},{"blogIds":79,"collectionId":80,"collectionName":81,"created":82,"created_by":13,"id":74,"image":83,"image_alt":13,"image_path":84,"label":85,"name":86,"priority":87,"publish_at":88,"scheduled_at":13,"status":89,"updated":90,"updated_by":13},[],"sclcatblg987654321","school_category_blogs","2026-03-04 08:33:53.210Z","59ty92ns80w_15oc1implw.png","https:\u002F\u002Ftwsme-r2.tumwebsme.com\u002Fsclcatblg987654321\u002Fwqxt7ag2gn7xcmk\u002F59ty92ns80w_15oc1implw.png",{"en":86,"th":86},"Golang The Series",1,"2026-03-16 04:39:38.440Z","published","2026-04-25 02:32:15.470Z","3ntbs0bnwdc7lq4",254,"f4l95lly7crttk6",[20,25,30,35,40,45,50,55,60],"2025-03-24 01:51:23.344Z","เรียนรู้วิธีเพิ่ม ฟีเจอร์ปักหมุดข้อความ (Pinned Messages) ใน WebSocket Chat เพื่อให้ผู้ใช้สามารถเก็บข้อความสำคัญไว้ดูภายหลังได้ รองรับการแจ้งเตือนแบบเรียลไทม์เมื่อมีข้อความถูกปักหมุด","pinned-messages-websocket-chat","2026-04-22 07:11:42.530Z",{"th":97}]