Relationship Operations

`for`

Arguments: (...args)
Returns: self

Create a new related model.

const post = await Post.find(1)
const comment = new Comment({
  text: 'New comment for this post!'
}).for(post)

await comment.save()

POST /posts/1/comments

const user = new User({ id: 1 })
const post = await user.posts().first()
const comment = new Comment({
  text: 'New comment for this post!'
}).for(user, post)

await comment.save()

POST /users/1/posts/1/comments

`attach`

Arguments: (payload)
Returns: Model | { data: Model }

Another way to create a new related model.

const post = await Post.find(1)
const comment = post.comments().attach({
  text: 'New comment for this post!'
})

POST /posts/1/comments

`sync`

Arguments: (payload)
Returns: Model | { data: Model }

Update a related model.

const post = await Post.find(1)
const comment = await post.comments().sync({
  text: 'Updated comment!'
})

PUT /posts/1/comments