Added Scanner identification and MQTT handling

booker/templates/booker/scanner.html

@@ -7,15 +7,15 @@
     <textarea id="chat-log" cols="100" rows="20"></textarea><br>
     <input id="chat-message-input" type="text" size="100"><br>
     <input id="chat-message-submit" type="button" value="Send">
-    {{ scanner_id|json_script:"room-name" }}
+    {{ scanner_id|json_script:"scanner_id" }}
     <script>
-        const roomName = JSON.parse(document.getElementById('room-name').textContent);
+        const scannerId = JSON.parse(document.getElementById('scanner_id').textContent);
 
         const chatSocket = new WebSocket(
             'ws://'
             + window.location.host
-            + '/ws/scannerdata/'
-            + roomName
+            + '/ws/scanner/'
+            + scannerId
             + '/'
         );