React-Apollo 错误：“...仅支持每个 HOC 的查询、订阅或突变”答案

【问题标题】：React-Apollo error: "...only supports a query, subscription, or a mutation per HOC"React-Apollo 错误：“...仅支持每个 HOC 的查询、订阅或突变”
【发布时间】：2021-05-21 02:41:02
【问题描述】：

我正在尝试以这种格式创建两个单独的突变：

import gql from 'graphql-tag';

const MUTATION = gql`
  mutation setItem($item:String!) {
    setItem(item:$item)
  },
  mutation setAnotherItem($setAnotherItem:Bool) {
    setAnotherItem(setAnotherItem:$setAnotherItem)
  }
`;

但我收到此错误：

Invariant Violation: react-apollo only supports a query, subscription, or a mutation per HOC. [object Object] had 0 queries, 0 subscriptions and 2 mutations. You can use 'compose' to join multiple operation types to a component

什么是构造这个以使两个突变都可用的正确方法？

【问题讨论】：

标签： javascript graphql apollo react-apollo graphql-mutation

【解决方案1】：

您只需键入一次mutation 并嵌套在（变异）字段中：

import gql from 'graphql-tag';

const MUTATION = gql`
  mutation MyMutation ($item: String, $setAnotherItem: Book) {
    setItem(item: $item) { ...}
    setAnotherItem(setAnotherItem: $setAnotherItem) {...}
  }
`;

【讨论】：