Book Image

Building SPAs with Django and HTML Over the Wire

By : Andros Fenollosa
5 (1)
Book Image

Building SPAs with Django and HTML Over the Wire

5 (1)
By: Andros Fenollosa

Overview of this book

The HTML over WebSockets approach simplifies single-page application (SPA) development and lets you bypass learning a JavaScript rendering framework such as React, Vue, or Angular, moving the logic to Python. This web application development book provides you with all the Django tools you need to simplify your developments with real-time results. You’ll learn state-of-the-art WebSocket techniques to realize real-time applications with minimal reliance on JavaScript. This book will also show you how to create a project with Docker from the ground up, test it, and deploy it on a server. You’ll learn how to create a project, add Docker, and discover development libraries, Django channels, and bidirectional communication, and from then, on you’ll create real projects of all kinds using HTML over WebSockets as a chat app or a blog with real-time comments. In addition, you’ll modernize your development techniques by moving from using an SSR model to creating web pages using WebSockets over HTML. With Django, you’ll be able to create SPAs with professional real-time projects where the logic is in Python. By the end of this Django book, you’ll be able to build real-time applications, as well as gaining a solid understanding of WebSockets with Django.
Table of Contents (14 chapters)
Part 1: Getting Started with Python
Part 2: WebSockets in Django
Part 3: HTML over WebSockets
Part 4: Simplifying the frontend with Stimulus

Chapter 5: Separating Communication in Rooms

Channels allow us to broadcast, send, and receive asynchronous messages to/from all clients that belong to a group. Within a group, we cannot filter a selection of users. To solve this problem and create a division or categories, we must resort to creating new Channels and manually grouping the clients.

So far, we can communicate with a customer who is isolated in a Channel or with all the customers connected to a common Channel. Now, it is time to learn how to control groups/Channels to separate and move customers between different groups as needed. You can even assign the same customer to several groups at the same time. For example, if we are creating a Chat, it would be useful for the user to be subscribed to a unique Channel to receive notifications, as well as another public group where all the customers can write freely, and other private groups where they can have conversations with other users. It makes sense for a client to...