Adding the tagging functionality

A very common functionality in blogs is to categorize posts using tags. Tags allow you to categorize content in a non-hierarchical manner, using simple keywords. A tag is simply a label or keyword that can be assigned to posts. We will create a tagging system by integrating a third-party Django tagging application into the project.

django-taggit is a reusable application that primarily offers you a Tag model and a manager to easily add tags to any model. You can take a look at its source code at https://github.com/jazzband/django-taggit.

First, you need to install django-taggit via pip by running the following command:

pip install django-taggit==3.0.0

Then, open the settings.py file of the mysite project and add taggit to your INSTALLED_APPS setting, as follows:

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions...