javascript - 提交包含对象播放负载嵌套数组的 graphql 突变，值为 "aws-amplify"

Question

我尝试使用 aws-amplify 提交以下有效负载(嵌套的对象数组) :

{
  "data": [
    { "name": "alpha", "description": "lorem" },
    { "name": "bravo", "description": "ipsum" },
  ]
}

这个解决方案(源代码是TypeScript):

import AWSAmplifyAPI, { graphqlOperation } from "@aws-amplify/api";


const rawGraphQLRequest: string = `
  mutation ($data: [registerMultipleItemsInput]!) {
    registerMultipleItems(data: [$data])
  }`;

type Item = {
  name: string;
  description: string;
}

async function registerMultipleItems(items: Array<Item>): Promise<void> {
  await AWSAmplifyAPI.graphql(graphqlOperation(rawGraphQLRequest, { data: items }));
}

导致不清楚的错误:

Validation error of type VariableTypeMismatch: Variable type '[registerMultipleItemsInput]!' doesn't match expected 
type 'registerMultipleItemsInput' @ 'registerMultipleItems'";

是后端，scheme定义为:

registerMultipleItems(data: [registerMultipleItemsInput]!): [String]!
    @aws_cognito_user_pools

input registerMultipleItemsInput{
  name: String!
  description: String!
}

我尝试添加registerMultipleItemsInput定义为rawGraphQLRequest :

const rawGraphQLRequest: string = `

  input registerMultipleItemsInput {
    name: String!
    description: String!
  }

  mutation ($data: [registerMultipleItemsInput]!) {
    registerMultipleItems(data: [$data])
  }`;

仍存在上述错误，并且发生了其他错误:

Validation error of type NonExecutableDefinition: The registerMultipleItemsInput definition is not executable.

{ "data": <Array> 的正确语法是什么} 有效负载？

P。 S.我希望我不需要定义registerMultipleItemsInput在rawGraphQLRequest ，因为registerMultipleItemsInput已经在后端定义并在前端再次定义它是某种硬编码。

Answer 1

我认为你的第一个解决方案是正确的，除了:

mutation ($data: [registerMultipleItemsInput]!) {
    registerMultipleItems(data: [$data]) // <-------- incorrect
}`;

$data 已包含 registerMultipleItemsInput 数组，但您已将其包装在另一个数组中，这是不正确的，它必须是:

mutation ($data: [registerMultipleItemsInput]!) {
    registerMultipleItems(data: $data) // <-------- correct
}`;