andros/ejemplo-de-chat-con-Django
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Andros Fenollosa 2020-11-15 10:52:18 +01:00
commit 75de13e7a2
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0
apps/chat/__init__.py Normal file
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apps/chat/admin.py Normal file
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from django.contrib import admin
# Register your models here.

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apps/chat/apps.py Normal file
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from django.apps import AppConfig
class ChatConfig(AppConfig):
name = 'chat'

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apps/chat/consumers.py Normal file
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import json
from channels.generic.websocket import AsyncWebsocketConsumer
from asgiref.sync import sync_to_async
class ChatConsumer(AsyncWebsocketConsumer):
async def connect(self):
''' Cliente se conecta '''
# Recoge el nombre de la sala
self.room_name = self.scope["url_route"]["kwargs"]["room_name"]
self.room_group_name = "chat_%s" % self.room_name
# Se une a la sala
await self.channel_layer.group_add(self.room_group_name, self.channel_name)
# Informa al cliente del éxito
await self.accept()
async def disconnect(self, close_code):
''' Cliente se desconecta '''
# Leave room group
await self.channel_layer.group_discard(self.room_group_name, self.channel_name)
async def receive(self, text_data):
''' Cliente envía información '''
text_data_json = json.loads(text_data)
text = text_data_json["text"]
member_send = text_data_json["member_send"]
member_receive = text_data_json["member_receive"]
await self.save_message(member_send, member_receive, text)
# Send message to room group
await self.channel_layer.group_send(
self.room_group_name,
{
"type": "chat_message",
"text": text,
"member_send": member_send,
"member_receive": member_receive,
},
)
async def chat_message(self, event):
''' Recibe información de la sala '''
text = event["text"]
member_send = event["member_send"]
member_receive = event["member_receive"]
# Send message to WebSocket
await self.send(
text_data=json.dumps(
{
"text": text,
"member_send": member_send,
"member_receive": member_receive,
}
)
)

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apps/chat/migrations/__init__.py Normal file
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apps/chat/models.py Normal file
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from django.db import models
# Create your models here.

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apps/chat/routing.py Normal file
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from django.urls import re_path
from . import consumers
websocket_urlpatterns = [
re_path(r'ws/chat/(?P<room_name>\w+)/$', consumers.ChatConsumer),
]

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apps/chat/tests.py Normal file
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from django.test import TestCase
# Create your tests here.

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apps/chat/views.py Normal file
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from django.shortcuts import render
# Create your views here.

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apps/front/__init__.py Normal file
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apps/front/admin.py Normal file
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from django.contrib import admin
# Register your models here.

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apps/front/apps.py Normal file
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from django.apps import AppConfig
class FrontConfig(AppConfig):
name = 'front'

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apps/front/migrations/__init__.py Normal file
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apps/front/models.py Normal file
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from django.db import models
# Create your models here.

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apps/front/templates/chat.html Normal file
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<!doctype html>
<html lang="es">
<head>
<meta charset="UTF-8"/>
<title>Chat</title>
<!-- Spectre CSS -->
<link rel="stylesheet" href="https://unpkg.com/spectre.css/dist/spectre.min.css">
<link rel="stylesheet" href="https://unpkg.com/spectre.css/dist/spectre-exp.min.css">
<link rel="stylesheet" href="https://unpkg.com/spectre.css/dist/spectre-icons.min.css">
</head>
<body>
<div class="container grid-md">
<h1 class="mt-2 text-center">Chat con Django</h1>
<div class="columns">
<aside class="column col-4">
<!-- Configurar alias -->
<div class="form-group">
<label class="form-label">
Nombre
<input id="nombre" class="form-input" type="text" placeholder="Oveja programadora...">
</label>
</div>
<!-- Fin Configurar alias -->
</aside>
<main class="column">
<!-- Mensajes -->
<section id="mensajes"></section>
<!-- Fin Mensajes -->
<!-- Enviar mensajes -->
<section class="form-group">
<input id="texto" class="form-input" type="text" placeholder="Nuevo mensaje...">
<button id="enviar" class="btn btn-block">Enviar</button>
</section>
<!-- Fin Enviar mensajes -->
</main>
</div>
</div>
<script>
/*
* VARIABLES
*/
const SALA_CHAT = 'python';
const CHAT_SOCKET = new WebSocket('ws://localhost:8000/ws/chat/' + SALA_CHAT);
const CAMPO_NOMBRE = document.querySelector('#nombre');
const MENSAJES = document.querySelector('#mensajes');
const CAMPO_TEXTO = document.querySelector('#texto');
const BOTON_ENVIAR = document.querySelector('#enviar');
/*
* FUNCIONES
*/
function anyadirNuevoMensajeAlHTML(nombre, texto, propio = false) {
// Contenedor
const MI_CONTENEDOR = document.createElement('div');
MI_CONTENEDOR.classList.add(propio ? 'bg-primary' : 'bg-secondary', 'p-2');
// Nombre
const MI_NOMBRE = document.createElement('h2');
MI_NOMBRE.classList.add('text-tiny', 'text-bold', 'mt-2');
MI_NOMBRE.textContent = nombre;
MI_CONTENEDOR.appendChild(MI_NOMBRE);
// Texto
const MI_TEXTO = document.createElement('p');
MI_TEXTO.classList.add('my-2');
MI_TEXTO.textContent = texto;
MI_CONTENEDOR.appendChild(MI_TEXTO);
// Anyade todo a MENSAJES
MENSAJES.appendChild(MI_CONTENEDOR);
}
function enviarNuevoMessage() {
// Envia al WebSocket un nuevo mensaje
CHAT_SOCKET.send(JSON.stringify({
nombre: CAMPO_NOMBRE.value,
texto: CAMPO_TEXTO.value,
fechaCreacion: Date.now()
}));
// Añadimos el nuevo mensaje al HTML
anyadirNuevoMensajeAlHTML(CAMPO_NOMBRE.value, CAMPO_TEXTO.value, true);
// Limpiamos el textarea
CAMPO_TEXTO.value = '';
// Le volvemos a dar el foco para escribir otro mensaje
CAMPO_TEXTO.focus();
}
/*
* EVENTOS
*/
// Conectado
CHAT_SOCKET.addEventListener('open', () => {
console.log('Conectado');
});
// Desconectado
CHAT_SOCKET.addEventListener('close', () => {
console.log('Desconectado');
});
// Recibir mensaje
CHAT_SOCKET.addEventListener('message', (event) => {
console.log('Recibido nuevo mensaje');
const miNuevaData = JSON.parse(event.data);
// Add message to View
this.addMessage(
myData.member_send === this.$store.state.info_user.id,
myData.text
);
});
// Enviar mensaje cuando se pulsa en Enviar
BOTON_ENVIAR.addEventListener('click', enviarNuevoMessage);
</script>
</body>
</html>

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apps/front/tests.py Normal file
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from django.test import TestCase
# Create your tests here.

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apps/front/views.py Normal file
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from django.shortcuts import render
def chat(request):
return render(request, 'chat.html')

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asgi.py Normal file
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import os
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mi_web.settings")
import django
django.setup()
from channels.auth import AuthMiddlewareStack
from channels.routing import ProtocolTypeRouter, URLRouter
from django.core.asgi import get_asgi_application
from apps.chat.routing import websocket_urlpatterns
application = ProtocolTypeRouter(
{
"websocket": AuthMiddlewareStack(URLRouter(websocket_urlpatterns)),
}
)

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db.sqlite3 Normal file
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manage.py Executable file
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#!/usr/bin/env python
"""Django's command-line utility for administrative tasks."""
import os
import sys
def main():
"""Run administrative tasks."""
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mi_web.settings')
try:
from django.core.management import execute_from_command_line
except ImportError as exc:
raise ImportError(
"Couldn't import Django. Are you sure it's installed and "
"available on your PYTHONPATH environment variable? Did you "
"forget to activate a virtual environment?"
) from exc
execute_from_command_line(sys.argv)
if __name__ == '__main__':
main()

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mi_web/__init__.py Normal file
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mi_web/asgi.py Normal file
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"""
ASGI config for mi_web project.
It exposes the ASGI callable as a module-level variable named ``application``.
For more information on this file, see
https://docs.djangoproject.com/en/3.1/howto/deployment/asgi/
"""
import os
from django.core.asgi import get_asgi_application
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mi_web.settings')
application = get_asgi_application()

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mi_web/settings.py Normal file
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"""
Django settings for mi_web project.
Generated by 'django-admin startproject' using Django 3.1.3.
For more information on this file, see
https://docs.djangoproject.com/en/3.1/topics/settings/
For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.1/ref/settings/
"""
from pathlib import Path
# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent
# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.1/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'pzcj^u^ktd7$9#pd196m+=#384=*%^il2r5po-)jutl^zpt%k0'
# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True
ALLOWED_HOSTS = []
# Application definition
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'channels',
'apps.chat',
'apps.front',
]
MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]
ROOT_URLCONF = 'mi_web.urls'
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]
WSGI_APPLICATION = 'mi_web.wsgi.application'
# Database
# https://docs.djangoproject.com/en/3.1/ref/settings/#databases
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': BASE_DIR / 'db.sqlite3',
}
}
# Password validation
# https://docs.djangoproject.com/en/3.1/ref/settings/#auth-password-validators
AUTH_PASSWORD_VALIDATORS = [
{
'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
},
]
# Internationalization
# https://docs.djangoproject.com/en/3.1/topics/i18n/
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_L10N = True
USE_TZ = True
# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.1/howto/static-files/
STATIC_URL = '/static/'
ASGI_APPLICATION = "asgi.application"
CHANNEL_LAYERS = {
"default": {
"BACKEND": "channels_redis.core.RedisChannelLayer",
"CONFIG": {
"hosts": [("127.0.0.1", 6379)],
},
},
}

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mi_web/urls.py Normal file
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"""mi_web URL Configuration
The `urlpatterns` list routes URLs to views. For more information please see:
https://docs.djangoproject.com/en/3.1/topics/http/urls/
Examples:
Function views
1. Add an import: from my_app import views
2. Add a URL to urlpatterns: path('', views.home, name='home')
Class-based views
1. Add an import: from other_app.views import Home
2. Add a URL to urlpatterns: path('', Home.as_view(), name='home')
Including another URLconf
1. Import the include() function: from django.urls import include, path
2. Add a URL to urlpatterns: path('blog/', include('blog.urls'))
"""
from django.contrib import admin
from django.urls import path
from apps.front import views
urlpatterns = [
path('admin/', admin.site.urls),
path('', views.chat),
]

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mi_web/wsgi.py Normal file
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"""
WSGI config for mi_web project.
It exposes the WSGI callable as a module-level variable named ``application``.
For more information on this file, see
https://docs.djangoproject.com/en/3.1/howto/deployment/wsgi/
"""
import os
from django.core.wsgi import get_wsgi_application
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mi_web.settings')
application = get_wsgi_application()