Part 2: Templates

We will edit the views, urls and templates for posting a Room form, and joining it.

We will edit the index.html file, for posting a new room.

<!-- chat/templates/chat/index.html -->
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8"/>
    <title>Chat Rooms</title>
</head>
<body>
    What chat room would you like to enter?<br>
    <form method="POST">
        <input id="room-name-input" name="name" type="text" size="100"><br>
        <input id="room-name-submit" type="button" value="Enter">
    </form>
</body>
</html>

Next, edit urls.py.

from django.urls import path
from . import views

urlpatterns = [
    path('', views.index, name='index'),
    path('room/<int:pk>/', views.room, name='room'),

]

Editing existing views

We will edit the views.py

from django.http import HttpResponseRedirect
from django.shortcuts import get_object_or_404, render, reverse

from .models import Room

def index(request):
    if request.method == "POST":
        name = request.POST.get("name", None)
        if name:
            try:
                room = Room.manager.get(name=name)
                return HttpResponseRedirect(reverse("room", args=[room.pk]))
            except Room.DoesNotExist:
                pass
            room = Room.objects.create(name=name, host=request.user)
            return HttpResponseRedirect(reverse("room", args=[room.pk]))
    return render(request, 'chat/index.html')

def room(request, pk):
    room: Room = get_object_or_404(Room, pk=pk)
    return render(request, 'chat/room.html', {
        "room":room,
    })

We need to create or update our room.html template:

<!-- chat/templates/chat/room.html -->
<!DOCTYPE html>
<html lang="us">
<head>
    <meta charset="utf-8"/>
    <title>Chat Room</title>
</head>
<body>
    <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">
    <script>
        const room_pk = {{ room.pk }};
        const request_id = "{{ request.sessions.session_key }}";
        const wsURL = "ws://" + window.location.host + "/ws/chat/"
        const chatSocket = new WebSocket(wsURL);

        chatSocket.onopen = function(){
            chatSocket.send(
                JSON.stringify({
                    pk:room_pk,
                    action:"join_room",
                    request_id:request_id,
                })
            );
            chatSocket.send(
                JSON.stringify({
                    pk:room_pk,
                    action:"retrieve",
                    request_id:request_id,
                })
            );
        };

        chatSocket.onmessage = function (e) {
            const data = JSON.parse(e.data);
            switch (data.action) {
                case "retrieve":
                    break;
                case "create":
                    document.querySelector('#chat-log').value += (data.message + '\n');
                    break;
                default:
                    break;
            }
        };

        chatSocket.onclose = function(e) {
            console.error('Chat socket closed unexpectedly');
        };

        $('#chat-message-input').focus();
        $('#chat-message-input').on('keyup', function(e){
            if (e.keyCode === 13) {  // enter, return
                document.querySelector('#chat-message-submit').click();
            }
        });

        $('#chat-message-submit').on('click', function(e){
            const message = $('#chat-message-input').val();
            chatSocket.send(JSON.stringify({
                message: message,
                room: room_pk,
                action: "create_message",
                request_id: request_id
            }));
            $('#chat-message-input').val('') ;
        });

    </script>
</body>
</html>

With this created w should now be able to create a room and enter it.