Building a follow system

Let's build a follow system in your project. This means that your users will be able to follow each other and track what other users share on the platform. The relationship between users is a many-to-many relationship: a user can follow multiple users and they, in turn, can be followed by multiple users.

Creating many-to-many relationships with an intermediary model

In previous chapters, you created many-to-many relationships by adding the ManyToManyField to one of the related models and letting Django create the database table for the relationship. This is suitable for most cases, but sometimes you may need to create an intermediary model for the relationship. Creating an intermediary model is necessary when you want to store additional information for the relationship, for example, the date when the relationship was created, or a field that describes the nature of the relationship.

Let's create an intermediary model to build relationships...