Question

在创建帖子的变体中，我正在使用以下代码：

async function savePost(parent, args, context, info){

  let data = {...args}
  delete data.categories
  delete data.status

  if (!context.request.userId) {
    throw new Error('Please SignIn to continue.')
  }

  const post = await context.prisma.createPost({
    author: {
      connect: { id: context.request.userId }
    },
    categories: {
      set: args.categories,
    },
    status: args.status,
    ...data
  })

  return post

}

这会将帖子连接到数据库中的作者。我是通过使用数据库游乐场来了解这一点的。

但是，当我console.log postToUpdate时，它返回`author：null！当我在客户端使用gql时，会发生相同的事情。该帖子没有作者！

尽管作者已保存在数据库中，但在客户端和服务器端我看不到他/她。

作为参考，这是数据模型

enum Previledge {
  SUPERADMIN
  ADMIN
  MODERATOR
  AUTHOR
  READER
}

enum Category {
  TECH
  FIN
  DIGIMARK
  CODING
  TUTORIAL
  HOWTO
  WRITING
  INSPIRE
  SCIENCE
  POLITICS
  LIFESTYLE
  FOOD
  BUSINESS
  ENTREPRENEUR
  HISTORY
  HEALTH
  PET
  PARENTHOOD
  TRAVEL
  INDIA
  CHINA
  US
  UK
  WORLD
  NEWS
  REVIEW
}

enum PostStatus {
  PUBLISHED
  DRAFT
  DELETED
}

type Post {
  id: ID! @unique
  title: String!
  editorSerializedOutput: Json!
  editorCurrentContent: Json!
  editorHtml: String!
  updatedAt: DateTime!
  createdAt: DateTime!
  author: User! @relation(name: "PostsAndUser")
  categories: [Category]!
  thumbnail: Json!
  status: PostStatus!
}

type User {
  id: ID! @unique
  socialId: String! @unique
  fname: String!
  lname: String!
  name: String!
  phone: String @unique
  email: String! @unique
  gender: String
  birthday: String
  bio: String
  posts: [Post]! @relation(name: "PostsAndUser")
  profilePicture: String!
  followers: [User]!
  previledge: [Previledge]!
  signUpMethod: String!
  accessToken: String!
  updatedAt: DateTime!
  createdAt: DateTime!
}

这是整个架构：

# import * from './generated/prisma.graphql'

scalar DateTime

type Message {
  code: Int
  message: String
}

type Mutation {
  signIn(
    socialId: String!
    fname: String!
    lname: String!
    name: String!
    phone: String
    email: String!
    gender: String
    birthday: String
    bio: String
    profilePicture: String!
    signUpMethod: String!
    accessToken: String!
  ): User!
  signOut: Message
  savePost(
    title: String!
    editorSerializedOutput: Json!
    editorCurrentContent: Json!
    editorHtml: String!
    categories: [Category]!
    thumbnail: Json!
    status: PostStatus!
  ): Post!
}

type Query {
  users: [User]!
  me: User
  canUpdatePost(id: ID!): Post
}

type User {
  id: ID!
  fname: String!
  lname: String!
  name: String!
  phone: String
  email: String!
  gender: String
  birthday: String
  bio: String
  posts(where: PostWhereInput, orderBy: PostOrderByInput, skip: Int, after: String, before: String, first: Int, last: Int): [Post!]
  profilePicture: String!
  followers(where: UserWhereInput, orderBy: UserOrderByInput, skip: Int, after: String, before: String, first: Int, last: Int): [User!]
  previledge: [Previledge]!
  signUpMethod: String!
  updatedAt: String!
  createdAt: String!
}

Answer 1

据我所知，如果您不指定createPost的第二个参数，它将仅返回标量字段。试试：

  const post = await context.prisma.createPost({
    author: {
      connect: { id: context.request.userId }
    },
    categories: {
      set: args.categories,
    },
    status: args.status,
    ...data
  }, `{
   author {
     id
   }
  }`)

  console.log(post)

此外，您的架构中似乎缺少类型Post，您可能需要再次生成它。

Answer 2

您需要将info作为第二个参数传递给Prisma绑定的createPost函数。

有可能从客户端查询author字段以响应savePost突变，但是由于没有第二个参数传递给createPost，prisma仅返回标量字段。由于author类型中的Post字段是按要求定义的，因此，如果从客户端查询了author但解析程序未返回const post = await context.prisma.createPost({ author: { connect: { id: context.request.userId } }, categories: { set: args.categories, }, status: args.status, ...data })，则GraphQL验证将失败。

更改此：

const post = await context.prisma.createPost({
    author: {
      connect: { id: context.request.userId }
    },
    categories: {
      set: args.categories,
    },
    status: args.status,
    ...data
  }, info)

收件人：

{{1}}

OneToMany关系适用于Prisma数据库，但不适用于服务器

2 个答案: