如何在AWS Amplify中为react native更新嵌套信息

Question

我在graphql中嵌套了模式，我正试图使用amplify创建的更新函数来更新模式的嵌套部分，以获取特定的信息ID。我有要更新和要更新hasBooks部分的表的ID。尝试使用我当前的代码时，根据我的尝试，我会出现两个错误：

"变量输入包含未为输入对象类型"UpdateInformationInput"定义的字段名"hasBooks">

和

"变量'input'为NonNull类型'UpdateInformationInput！'强制了Null值">

架构：

type Information @model @searchable{
id: ID!
firstName: String!
lastName: String!
phoneNumber: Int
password: Int
timestamp:String!
hasBooks: [Books] @connection (name:"InformationBooks")

}
type Books @model { 
id: ID!
firstName: String!
lastName: String!
title: String!
information: Information @connection 
(name:"InformationBooks")
}
export const updateInformation = /* GraphQL */ `
mutation UpdateInformation(
$input: UpdateInformationInput!
$condition: ModelInformationConditionInput
) {
updateInformation(input: $input, condition: $condition) {
id
firstName
lastName
phoneNumber
password
timestamp
hasBooks {
items {
id
firstName
lastName
title
}
nextToken
}
}
}

代码：

const initialState = { 
firstName: '',
lastName: '',
title:''
}
const [formState, setFormState] = useState(initialState)
const [contactInfos, setContactInfos] = useState([])
async function addContactInfo() {
try {
const contactInfo = { ...formState }
setContactInfos([...contactInfos, contactInfo])
await API.graphql(graphqlOperation(updateInformation, 
{input: { hasBooks: contactInfo, id:caseID}}))
} catch (err) {
console.log('error creating todo:', err)
}
}

Answer 1

需要一个带有@key 的一对多连接

type Information @model @searchable {
id: ID!
firstName: String!
lastName: String!
phoneNumber: Int
password: Int
timestamp:String!
books: [Books] @connection (keyName:"byInformation", fields:["id"])

}
type Books @model 
@key (name:"byInformation", fields:["informationID"]) {
id: ID!
informationID:ID!
firstName: String!
lastName: String!
title: String!
}

然后通过以下方式创建信息：

const initialState = { 
firstName: '',
lastName: '',
title:'',
informationID: caseID
}

const [contactInfos, setContactInfos] = useState([])
async function addContactInfo() {
try {
const contactInfo = { ...formState }
setContactInfos([...contactInfos, contactInfo])
await API.graphql(graphqlOperation(createBooks, {input: 
contactInfo}))
} catch (err) {
console.log('error creating todo:', err)
}
}