Book Image

Django 1.0 Website Development

Book Image

Django 1.0 Website Development

Overview of this book

Django is a high-level Python web framework that was developed by a fast-moving online-news operation to meet the stringent twin challenges of newsroom deadlines and the needs of web developers. It is designed to promote rapid development and clean, pragmatic design and lets you build high-performing, elegant web applications rapidly. Django focuses on automating as much as possible and adhering to the DRY (Don't Repeat Yourself) principle, making it easier to build high-performance web applications faster, with less code. This book will show you how to assemble Django's features and take advantage of its power to design, develop, and deploy a fully-featured web site. It will walk you through the creation of an example web application, with lots of code examples. Specially revised for version 1.0 of Django, the book starts by introducing the main design concepts in Django. Next, it leads you through the process of installing Django on your system. After that, you will start right away on building your social bookmarking application using Django. Various Django 1.0 components and sub-frameworks will be explained during this process, and you will learn about them by example. In each chapter, you will build one or more of the features that are essential in Web 2.0 applications, like user management, tags, and AJAX. You will also learn about good software development practices, such as keeping your application secure, and automating testing with unit tests. By the end of the book, you will have built a fully functional real-life Web 2.0 application, and learned how to deploy it to a production server.
Table of Contents (17 chapters)
Django 1.0 Web Site Development
Credits
About the author
About the reviewer
Preface

Subscription system


We offer several web feeds that enable users to monitor updates on our web site. However, some users may still prefer the old way of monitoring updates via email. For those users, you may want to implement an email subscription system into the application. For example, you can let users receive notifications when a bookmark is posted by a friend, or when a bookmark is posted under a certain tag. Furthermore, you can group such notifications and send them in batches to avoid sending large numbers of emails.

The implementation details of this feature greatly depend on how you want it to work. It can be as simple as a data model that stores the tags that each user is subscribed to. It would have a loop that goes through all users who are subscribed to a particular tag and sends notifications to them when a bookmark is posted under this tag. This approach, however, is too basic and generates a lot of emails. A more sophisticated approach may involve storing notifications in...