graphql - Graphcool/GraphQL创建具有关联的突变

我有以下GraphQL模式。它具有与多对多关系的Books和Authors。如何为现有作者创建新的Book突变？

图式

type Author implements Node {
  books: [Book!]! @relation(name: "BookAuthors")
  createdAt: DateTime!
  id: ID! @isUnique
  name: String!
  updatedAt: DateTime!
}

type Book implements Node {
  authors: [Author!]! @relation(name: "BookAuthors")
  createdAt: DateTime!
  id: ID! @isUnique
  title: String!
  updatedAt: DateTime!
}

突变

mutation CreateBook($title: String!, $authors: [Author!]) {
    createBook(
      title: $title,
      authors: $authors,
    ) {
      id
      title
    }
  }

变数

{
  "title": "Ryans Book",
  "authors": ["cj5xti3kk0v080160yhwrbdw1"]
}

最佳答案

这显然被称为“连接突变”。
https://www.graph.cool/docs/reference/simple-api/nested-connect-mutations-tu9ohwa1ui/

mutation CreateBook($title: String!, $authorIds: [ID!]) {
    createBook(
      title: $title,
      authorIds: $authorIds,
    ) {
      id
      title
    }
  }

关于graphql - Graphcool/GraphQL创建具有关联的突变，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/45506535/