Adding the Like Feature

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 ...