GraphQL 解析器奇怪地将某些字段返回为 null

Question

在简要概述中，我正在尝试解析用户列表。我有一个 Apollo 服务器，它用我自己的方式拼接了一个 accounts-js 架构。所以我扩展了 User 类型以包含一些额外的字段。不过，在这种情况下，我只能返回 SOME 字段，其余为 null。

getUsers: async (_, __, ctx) => {
    let action = await usersModel.find();
    console.log(action)
    return action;  
},

我的me 查询确实返回了所有数据，但没有返回单个空字段。

  extend input CreateUserInput {
    isAdmin: Boolean!
  }

  extend type User {
    isAdmin: Boolean
    profile: Profile
    keys: [Key]
  }

  type Profile {
    avatar: String
    bio: String
  }

  type Key {
    id: ID
    livenet: Boolean
    nickname: String
  }
    
  type Query {
    getUsers: [User]
    me: User
  }

不过，当我在解析器中 console.log(action) 查询 getUsers 时，这些是在我的控制台中返回的文档。

[ { profile: { bio: 'haha' },
    _id: 5f0a901bdcf725204446c949,
    isAdmin: true,
    services: { password: [Object], email: [Object] },
    createdAt: 1594527771625,
    updatedAt: 1594691054105,
    username: 'ayooo',
    emails: [ [Object] ],
    keys: [ [Object], [Object] ] },
  { profile: { bio: 'testing' },
    _id: 5f0a9439abfce521aba79b2c,
    isAdmin: false,
    services: { password: [Object], email: [Object] },
    createdAt: 1594528825858,
    updatedAt: 1594762680766,
    username: 'lol',
    emails: [ [Object] ],
    keys: [ [Object] ] } ]

如果我下载我的整体 GraphQL 架构，它看起来是这样的：

directive @auth on FIELD_DEFINITION | OBJECT
input AuthenticateParamsInput {
  access_token: String
  access_token_secret: String
  provider: String
  password: String
  user: UserInput
  code: String
}

input CreateUserInput {
  isAdmin: Boolean!
  username: String
  email: String
  password: String
}

type CreateUserResult {
  userId: ID
  loginResult: LoginResult
}

type EmailRecord {
  address: String
  verified: Boolean
}

type ImpersonateReturn {
  authorized: Boolean
  tokens: Tokens
  user: User
}

input ImpersonationUserIdentityInput {
  userId: String
  username: String
  email: String
}

type Key {
  id: ID
  livenet: Boolean
  exchange: String
  nickname: String
  apiKey: String
  apiSecret: String
}

type LoginResult {
  sessionId: String
  tokens: Tokens
  user: User
}

type Mutation {
  setBio(bio: String): ID
  setAvatar(avatar: String): ID
  changeUsername(username: String): ID
  setKey(
    livenet: Boolean
    exchange: String
    nickname: String
    apiKey: String
    apiSecret: String
  ): ID
  createUser(user: CreateUserInput!): CreateUserResult
  verifyEmail(token: String!): Boolean
  resetPassword(token: String!, newPassword: String!): LoginResult
  sendVerificationEmail(email: String!): Boolean
  sendResetPasswordEmail(email: String!): Boolean
  addEmail(newEmail: String!): Boolean
  changePassword(oldPassword: String!, newPassword: String!): Boolean
  twoFactorSet(secret: TwoFactorSecretKeyInput!, code: String!): Boolean
  twoFactorUnset(code: String!): Boolean
  impersonate(
    accessToken: String!
    impersonated: ImpersonationUserIdentityInput!
  ): ImpersonateReturn
  refreshTokens(accessToken: String!, refreshToken: String!): LoginResult
  logout: Boolean
  authenticate(
    serviceName: String!
    params: AuthenticateParamsInput!
  ): LoginResult
  verifyAuthentication(
    serviceName: String!
    params: AuthenticateParamsInput!
  ): Boolean
}

type Profile {
  avatar: String
  bio: String
}

type Query {
  getUsers: [User]
  getProfile: Profile
  serverTime: String
  me: User
  twoFactorSecret: TwoFactorSecretKey
  getUser: User
}

type Tokens {
  refreshToken: String
  accessToken: String
}

type TwoFactorSecretKey {
  ascii: String
  base32: String
  hex: String
  qr_code_ascii: String
  qr_code_hex: String
  qr_code_base32: String
  google_auth_qr: String
  otpauth_url: String
}

input TwoFactorSecretKeyInput {
  ascii: String
  base32: String
  hex: String
  qr_code_ascii: String
  qr_code_hex: String
  qr_code_base32: String
  google_auth_qr: String
  otpauth_url: String
}

type User {
  username: String
  isAdmin: Boolean
  profile: Profile
  keys: [Key]
  id: ID!
  emails: [EmailRecord!]
}

input UserInput {
  id: ID
  email: String
  username: String
}

请注意，getUser 或我的查询会返回所有请求的数据。对于我需要在前端查询的重要内容，getUsers 只会返回一点点，大部分为空。我正在尝试在我的管理面板的表格中列出用户。也许这不是最好的方法？有人告诉我！

与查询返回用户的me 或getUser 不同。 ：/

Answer 1

type Query {
    getUsers: [User]
    me: User
  }

您的查询getUsers 返回User 类型的数组。

  extend type User {
    isAdmin: Boolean
    profile: Profile
    keys: [Key]
  }

为什么是extend？是否存在更早的User 定义？ ...无论如何graphQL 服务器只返回在返回类型中定义的字段。您的User 类型只有isAdmin、profile 和keys 属性。只会返回那些字段。

解决方案：扩展您的 User 类型定义以获取其他存在于 DB 字段中。

Answer 2

所以在敲掉了很多其他的东西之后，我才意识到这是由于我没有完全定义我的猫鼬模式！

mongoose.connect(process.env.MONGO_URI, {
  useNewUrlParser: true,
  useFindAndModify: false,
  useCreateIndex: true,
  useUnifiedTopology: true,
});

var usersSchema = new mongoose.Schema({
  username: String,
  isAdmin: Boolean,
  emails: [{ 
    verified: Boolean, 
    address: String 
  }],
  profile: {
    avatar: String,
    bio: String,
  },
  keys: [{ 
    nickname: String,
    exchange: String,
    livenet: Boolean,
    apiKey: String,
    apiSecret: String,
  }]
});

export const usersModel = mongoose.model('Users', usersSchema, 'users');