6

我正在为我的应用程序使用 AppSync。这是我的 Schema.graphql 文件的快速浏览

type Item @model
  @auth(rules: [
    { allow: public, provider: apiKey, operations: [read] },
    { allow: groups, groups: ["admin"] }
  ]) {
  id: ID!
  name: String!
  soldUnits: String!
  soldAs: [Float!]
  price: Float!
  isAvailable: Boolean!
  availableAmount: Float!
  category: String!
  isVeg: Boolean!
  offer: [String!]
  about: String
  storage: String
  benifits: String
  otherInfo: String
  rating: Int
  keywords: [String!]
  reviews: [String]
  images: [String]
  updatedBy: String
  addedBy: String
  qty: Int
  inventroy: Inventory @connection(name: "ItemInventory")
}

type User @model {
  id: ID!
  firstName: String!
  lastName: String!
  about: String
  phoneNumber: String
  email: String
  countryCode: String
  addresses: [Address] @connection
  orders: [Order] @connection(name: "OwnOrder")
}

type CartItem {
    id: ID!
    count: Int!
    name: String!
    price: Float
}

type Address @model {
  id: ID!
  lat: Float!
  long: Float!
  fullAddress: String!
  apartment: String!
  street: String
  area: String!
  district: String!
  city: String
  state: String!
  zip: Int!
  country: String!
  phoneNumber: String!
}

type InventoryAddress @model {
  id: ID!
  address: Address @connection
  inventroy: Inventory! @connection(name: "InventoryAddress")
}

type Order @model {
  id: ID!
  orderdate: AWSDate!
  ordertime: AWSTime!
  deliverySlot: String!
  deliveryDate: AWSDate!
  deliveryInput: String!
  deliveryPhoneNumber: String!
  deliveryPhoneCountryCode: String!
  deliveryAddress: String!
  deliveredTime: AWSDate
  deliveredDate: AWSDate
  deliveryCharges: Float!
  totalAmount: Float!
  paidAmount: Float!
  discount: Float!
  unpaidAmount: Float!
  status: String!
  paymentMethod: String!
  paymentId: String!
  itemsCount: Int!
  items: [CartItem]
  deliverAssignedTo: Patron @connection(name: "PatronOrder")
  owner: User @connection(name: "OwnOrder")
  inventroyDetails: Inventory @connection(name: "InventoryOrder")
}

type Patron @model {
  id: ID!
  age: Int!
  firstName: String!
  lastName: String!
  about: String
  workTime: String
  rating: Int!
  reviews: [String]
  addressProof: String!
  role: String
  workArea: Address @connection
  address: Address @connection
  deliveries: [Order] @connection(name: "PatronOrder")
  inventroyDetails: Inventory! @connection(name: "PatronInventory")
  addedItems: [Item] @connection
}

type Inventory @model {
  id: ID!
  address: InventoryAddress @connection(name: "InventoryAddress")
  patron: [Patron] @connection(name: "PatronInventory")
  items: [Item] @connection(name: "ItemInventory")
  orders: [Order] @connection(name: "InventoryOrder")
  manager: Patron @connection
  admins: [Patron] @connection
}

这是我在 AppSync 中生成的 GraphQL Schema。我能够查询数据并创建突变，但更新和删除突变不起作用。

mutation UpdateAddressInput {
  updateAddress(input:{
    id:"af5cd7e6-8213-48b6-aa8e-9d2d6999742c",
   area:"New Delhi"
  }){
    id,
    area
  }
}

这是一个示例查询，您可以在下面看到返回数据，它没有反映在 dynamoDB 中

{
  "data": {
    "updateAddress": {
      "id": "af5cd7e6-8213-48b6-aa8e-9d2d6999742c",
      "area": "Electronic City"
    }
  }
}
4

2 回答 2

10

即使使用 AWS Amplify，我更喜欢转到 AppSync 控制台并选择查询和突变，这样您就可以看到正在发生的事情以及在幕后需要什么来进行突变。

下面是从 AppSync 控制台中提取的更新突变示例，而不是codegen从 Amplify 中使用。

input UpdateRuralAddressInput {
    id: ID!
    latitude: String
    longitude: String
    stateCity: String
    status: Int
    _version: Int
}

请注意，执行更新需要字段版本。

我只是指出它来帮助其他人解决这个问题，这就是我在 Lambdas 中使用 Amplify + Appsync 客户端的方式

因此，在应用任何更新突变之前，请执行“get by id” query，并相应地更新来自请求正文的模型。这样，不仅现场版本将保持正常，其他方面也将保持正常。

Lambda 处理程序函数中的更新示例。 注意：您需要删除该属性__typename

    const updateRuralAddressRequest = JSON.parse(event.body);
    
    const client = await appsyncClient.hydrated();

    const ruralAddressQuery = await client.query({ query: gql(queryRuralAddress), variables: { id: updateRuralAddressRequest.id } });
    const ruralAddressFromDb = ruralAddressQuery.data.getRuralAddress;


    const updateRuralAddressInput = { ...ruralAddressFromDb, ...updateRuralAddressRequest };
    delete updateRuralAddressInput.__typename;

    const data = await client.mutate({ mutation: gql(updateRuralAddressMutation), variables: { updateRuralAddressInput } });

请注意，我的查询和更新突变都必须包含该version字段。

export const queryRuralAddress = `
  query GetRuralAddressByID($id: ID!) {
    getRuralAddress(id: $id) {
      id,
      latitude,
      longitude,
      stateCity,
      status,
      _version
    }
  }
`;

export const updateRuralAddressMutation = `
    mutation UpdateRuralAddress($updateRuralAddressInput:UpdateRuralAddressInput!) {
      updateRuralAddress(input: $updateRuralAddressInput) {
        id
        latitude
        longitude
        stateCity
        status,
        _version
      }
    }`;
于 2020-10-19T14:36:37.330 回答
6

您将在 dynamoDB 表中看到一个自动生成的字段“_version”。查看要更新区域字段的ID的_version值。当您获取地址时，您将获得一个字段“_version”。尝试这样的事情

mutation UpdateAddressInput {  
    updateAddress(input:{
     id:"af5cd7e6-8213-48b6-aa8e-9d2d6999742c",
     area:"New Delhi",

     _version:variable name // _version value in dynamoDB table for                                
                            //  the desired row.

    }){
    id, 
    area   
  }
}
于 2020-04-27T14:04:23.640 回答