Recieved this error: Error: Too many re-renders. React limits the number of renders to prevent an infinite loop

Question

我有一个步进器表单，它使用 GraphQL/Apollo 和 React 在两个不同的地方插入数据。

代码如下：

    export function ProjectStep({classes, nextStep}) {

      const {loading, error, data} = useUserQuery();
      const organizationsArray = _.get(data, "user.organizations");
      const [projectName, setProjectName] = useState("");
      const [organization, setOrganization] = useState("");
      const [createProject, appMutationResponse] = useappInsertMutation();
      const [createToken, tokenMutationResponse] = usetokenInsertMutation();
      const submitForm = () => {
        const variables = {name: projectName, orgId: organization, description: ""};
        createProject({variables});
      };

      const submitToken = () => {
        const variables = {
          enable: true,
          lastUsed: Date.now().toString(),
          appId: appMutationResponse.data.appInsert.id,
          orgId: appMutationResponse.data.appInsert.orgId,
        };
        createToken({variables});
      };

      if (appMutationResponse.data) {
        submitToken();
      }
}

第一个插入在：

const submitForm = () => {
            const variables = {name: projectName, orgId: organization, description: ""};
            createProject({variables});
          };

第二个插入开始：

const submitToken = () => {
            const variables = {
              enable: true,
              lastUsed: Date.now().toString(),
              appId: appMutationResponse.data.appInsert.id,
              orgId: appMutationResponse.data.appInsert.orgId,
            };
            createToken({variables});
          };

这些事件在按钮中被调用：

 <Button variant="contained" color="primary" type='button' onClick={submitForm}>
    Next
 </Button>

但是，当我点击按钮时，出现了这个错误：

Error: Too many re-renders. React limits the number of renders to prevent an infinite loop.

当我访问我的数据库时，我看到使用这部分代码在一次调用中保存了 50 个令牌：

const submitToken = () => {
                const variables = {
                  enable: true,
                  lastUsed: Date.now().toString(),
                  appId: appMutationResponse.data.appInsert.id,
                  orgId: appMutationResponse.data.appInsert.orgId,
                };
                createToken({variables});
              };

我认为因为我使用的是挂钩，所以我得到了响应，而该响应给我带来了错误，问题是，为什么我在一次调用中保存和接收 50 个令牌？

Answer 1

您直接在渲染中编写了以下代码，因此当 appMutationResponse.data 可用时，如果调用触发重新渲染的 submitToken 函数，然后再次调用该函数会导致无限循环.

if (appMutationResponse.data) {
   submitToken();
}

解决方案是将此代码放在 useEffect 中，运行将其放在数据更改中

useEffect(() => {
   if (appMutationResponse.data) {
      submitToken();
   }
}, [appMutationResponse.data])

Recieved this error: Error: Too many re-renders. React limits the number of renders to prevent an infinite loop

Recieved this error: Error: Too many re-renders. React limits the number of renders to prevent an infinite loop

graphql

react-hooks

hook

react-apollo

react-apollo-hooks