add chat box

chat_box/admin.py

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+from django.contrib import admin
+
+# Register your models here.

chat_box/apps.py

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+from django.apps import AppConfig
+
+
+class ChatBoxConfig(AppConfig):
+    name = 'chat_box'

chat_box/consumers.py

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+import json
+
+from channels.generic.websocket import AsyncWebsocketConsumer
+
+
+class ChatConsumer(AsyncWebsocketConsumer):
+    async def connect(self):
+        self.room_name = 'common'
+        self.room_group_name = 'chat_%s' % self.room_name
+
+        # Join room group
+        await self.channel_layer.group_add(
+            self.room_group_name,
+            self.channel_name,
+        )
+
+        await self.accept()
+
+    async def disconnect(self, close_code):
+        # Leave room group
+        await self.channel_layer.group_discard(
+            self.room_group_name,
+            self.channel_name,
+        )
+
+    # Receive message from WebSocket
+    async def receive(self, text_data):
+        text_data_json = json.loads(text_data)
+        message = text_data_json['message']
+
+        # Send message to room group
+        await self.channel_layer.group_send(
+            self.room_group_name,
+            {
+                'type': 'chat_message',
+                'message': message,
+            },
+        )
+
+    # Receive message from room group
+    async def chat_message(self, event):
+        message = event['message']
+
+        # Send message to WebSocket
+        await self.send(text_data=json.dumps({
+            'message': message,
+        }))

chat_box/models.py

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+from django.db import models
+
+# Create your models here.

chat_box/routing.py

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+from django.urls import re_path
+
+from . import consumers
+
+websocket_urlpatterns = [
+    re_path(r'ws/chat/', consumers.ChatConsumer),
+]

chat_box/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

chat_box/views.py

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+from django.shortcuts import render
+from django.utils.translation import gettext as _
+
+
+def chat(request):
+    return render(request, 'chat/chat.html', {
+        'title': _('Chat Box'),
+    })