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  • Book Overview & Buying Django 5 By Example
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Django 5 By Example

Django 5 By Example

By : Antonio Melé
4.6 (39)
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Django 5 By Example

Django 5 By Example

4.6 (39)
By: Antonio Melé

Overview of this book

If you want to learn Django by doing, this book is for you. Django 5 By Example is the fifth edition of the best-selling franchise that helps you build real-world web apps. This book will walk you through planning and creation, solving common problems, and implementing best practices using a step-by-step approach. You’ll cover a wide range of web application development topics through four different projects: a blog application, a social website, an e-commerce application, and an e-learning platform. Pick up what’s new in Django 5 as you build end-to-end Python web apps, follow detailed project plans, and understand the hows and whys of Django. This is a practical and approachable book that will have you creating web apps quickly.
Table of Contents (20 chapters)
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18
Other Books You May Enjoy
19
Index

Retrieving posts by similarity

Now that we have implemented tagging for blog posts, you can do many interesting things with tags. Tags allow you to categorize posts in a non-hierarchical manner. Posts about similar topics will have several tags in common. We will build a functionality to display similar posts by the number of tags they share. In this way, when a user reads a post, we can suggest to them that they read other related posts.

In order to retrieve similar posts for a specific post, you need to perform the following steps:

  1. Retrieve all tags for the current post.
  2. Get all posts that are tagged with any of those tags.
  3. Exclude the current post from that list to avoid recommending the same post.
  4. Order the results by the number of tags shared with the current post.
  5. In the case of two or more posts with the same number of tags, recommend the most recent post.
  6. Limit the query to the number of posts you want to recommend.

These steps are translated into a complex QuerySet that...

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