It appears that each user requires the following functionalities:
- To add/remove
User A as a follower of User B
- To find records of users who are following a specific user.
- To find records of users that a specific user is following.
Instead of creating a separate model, you can utilize a self-referencing many-to-many relation for this purpose. Here is how your User model would be structured in the Prisma Schema:
model User {
id String @id @default(uuid()) // or any other unique id field
following User[] @relation("UserFollows", references: [id])
followers User[] @relation("UserFollows", references: [id])
// ...other fields in the user table
}
Managing followers for a specific user
If an existing user record needs to have another user added as a follower, you can do so like this:
const updatedUser = await prisma.user.update({
where: {
id: followedUserId,
},
data: {
followers: {
connect: { // switch to 'disconnect' for removing a follower
id: followerUserId,
},
},
},
});
You can also remove a user from the list of followers by changing the connect method to disconnect.
Locating a user's followers and following lists
This code snippet can help retrieve a user record along with their followers and followings:
const user = await prisma.user.findUnique({
where: {
id: userId,
},
include: {
followers: true, // list of followers for userId
following: true, // list of users that follow userId
},
});
To delve deeper into self-relations, refer to the Prisma Docs.