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Full Stack Django and React

Adding the Like Feature

Explore how to implement a like feature in a social media application using Django. Learn to modify user models with a many-to-many relationship, add custom methods to handle liking and unliking posts, extend serializers to include like counts, and create REST API actions for liking functionality. This lesson helps build interactive post management features.

We'll cover the following...

A nice feature to have in a social media application is liking. Like Facebook, Instagram, or Twitter, we’ll allow users here to like a post.

We’ll also add data to count the number of likes a post has received and check whether a current user making the request has liked a post.

We’ll do this in four steps:

  • Add a new posts_liked field to the User model.

  • Write methods on the User model to like and remove a like from a post. We’ll also add a method to check whether the user has liked a post.

  • Add likes_count and has_liked to PostSerializer.

  • Add endpoints to like a post and remove a like from a post.

Great! Let’s start by adding the new fields to the User model.

Adding the posts_liked field to the User model

The posts_liked field will contain all the posts liked by a user. The relationship between the User model and the Post model concerning the “Like” feature can be described as follows:

  • A user can like many posts.

  • A post can be liked by many users.

Does this kind of relationship sound familiar? It is a ...