如何建立從用戶池到 aws appsync 模型的數據關系

Question

我是放大和應用同步的新手。 我正在嘗試創建一個 Post 模型，該模型需要與創建 Post 的用戶建立關系。 問題是我的用戶來自 cognito 用戶池。

我想要的是來自 cognito 的用戶 我不想在 dynamo db 上創建新的用戶表，因為 cognito 用戶池已經有它的信息 我只想在查詢帖子時獲取創建該帖子的用戶信息。

我應該如何建立這種關系？

我像這樣創建 amlify api

? Please select from one of the below mentioned services: GraphQL
? Choose the default authorization type for the API API key
? Enter a description for the API key: 
? After how many days from now the API key should expire (1-365): 7
? Do you want to configure advanced settings for the GraphQL API Yes, I want to make some additional changes.
? Configure additional auth types? Yes
? Choose the additional authorization types you want to configure for the API Amazon Cognito User Pool
Cognito UserPool configuration
Use a Cognito user pool configured as a part of this project.
? Configure conflict detection? No

這是我當前的 schema.grapql

type Post
    @model
    @versioned
    @aws_cognito_user_pools
    @auth(rules: [{ allow: owner, queries: null }, { allow: public }]) {
    id: ID!
    title: String!
    content: String
    thumb: String
    slug: String!
    allow_comments: Boolean
    owner: String!
    post_type: String!
    add_to_nav: Boolean!
    version: Int!
    comments: [Comment] @connection(name: "PostComments")
}

type Comment
    @model
    @versioned
    @aws_cognito_user_pools
    @auth(rules: [{ allow: owner, queries: null }]) {
    id: ID!
    content: String
    version: Int!
    post: Post @connection(name: "PostComments")
}

================================================ ==

編輯：添加了我想要的數據結果

這是我要執行的查詢

query ListPost {
  listPosts {
    items {
      title
      content
      owner{
          username
          id
          email
          first_name
          last_name
        }
      }
    }
  }
}

我想要的結果

{
  "data": {
    "listPosts": {
      "items": [
        {
          "title": "title 1"
          "content": "Test long text cotent"
          "owner": {
              "username": "user1"
              "id": "234234234"
              "email": "user1@test.com"
              "first_name": "John"
              "last_name": "Doe"
           }
        },
       {
          "title": "title 1"
          "content": "Test long text cotent"
          "owner": {
              "username": "user1"
              "id": "234234234"
              "email": "user1@test.com"
              "first_name": "John"
              "last_name": "Doe"
           }
        },
      ]
    }
  }
}

我找不到任何文檔如何構建這樣的東西。

Answer 1

這應該對正在考慮這樣做的其他人有所幫助：

https://docs.amplify.aws/cli-legacy/graphql-transformer/function/#usage

滾動至：

示例：從 Amazon Cognito 用戶池獲取登錄用戶