How to assign an `user_id` to a newly created record in Laravel's Lighthouse?

Question

Laravel's Lighthouse has directives to perform data-modifying CRUD operations directly on the database: @create, @delete, and @update.

A simple CRUD's create can be implemented like this:

type Mutation {
  createPost(title: String!): Post @create
}

This works, but it creates records without an owner. My question is: How to assign an user_id to a newly created record?

I mean, without having to use a resolver.

I could add an user_id parameter, like this:

type Mutation {
  createPost(user_id: ID, title: String!): Post @create
}

But that would cause a huge security issue - anyone could add or change records of other users.

Answer 1

You can use @inject directive, like @inject(context: "user.id", name: "user_id").

Answer 2

Alternatively, you can use an observer on your model and save the user_id there with auth()->id();