Book Image

Django Project Blueprints

By : Asad Jibran Ahmed
Book Image

Django Project Blueprints

By: Asad Jibran Ahmed

Overview of this book

Django is a high-level web framework that eases the creation of complex, database-driven websites. It emphasizes on the reusability and pluggability of components, rapid development, and the principle of don't repeat yourself. It lets you build high-performing, elegant web applications quickly. There are several Django tutorials available online, which take as many shortcuts as possible, but leave you wondering how you can adapt them to your own needs. This guide takes the opposite approach by demonstrating how to work around common problems and client requests, without skipping the important details. If you have built a few Django projects and are on the lookout for a guide to get you past the basics and to solve modern development tasks, this is your book. Seven unique projects will take you through the development process from scratch, leaving no stone unturned. In the first two projects, you will learn everything from adding ranking and voting capabilities to your App to building a multiuser blog platform with a unique twist. The third project tackles APIs with Django and walks us through building a Nagios-inspired infrastructure monitoring system. And that is just the start! The other projects deal with customizing the Django admin to create a CMS for your clients, translating your web applications to multiple languages, and using the Elasticsearch search server with Django to create a high performing e-commerce web site. The seventh chapter includes a surprise usage of Django, and we dive deep into the internals of Django to create something exciting! When you're done, you'll have consistent patterns and techniques that you can build on for many projects to come.
Table of Contents (15 chapters)
Django Project Blueprints
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Ranking submission


The next feature on our list is ranking the submissions using an intelligent algorithm. Let's take a look at what our feature description requires:

Tip

An algorithm to rank the submitted links in some defined order that depends on a number of factors including the votes for that link, the number of comments and the age of the submission

We have all this information in our database. We need to create an algorithm that will use all these pieces of information to give each submission a rank. Then, we'll just sort the submission using this ranking and show them in the sorted order. To keep things simple, let's use the following algorithm:

rank = number of votes + number of comments – number of days since submission

Seems simple enough, except for maybe the number of days since submission calculations. However, the datetime module in the Python standard library makes this a breeze for us. In Python, if you subtract two datetime objects, you get a timedelta object. This object represents...