我有一个步进窗体,可以使用GraphQL / Apollo和React在两个不同的位置插入数据。
下面是代码:
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();
}
}
第一次插入是在
const submitForm = () => {
const variables = {name: projectName, orgId: organization, description: ""};
createProject({variables});
};
第二个插入已打开:
const submitToken = () => {
const variables = {
enable: true,
lastUsed: Date.now().toString(),
appId: appMutationResponse.data.appInsert.id,
orgId: appMutationResponse.data.appInsert.orgId,
};
createToken({variables});
};
这些事件在按钮中调用:
<Button variant="contained" color="primary" type='button' onClick={submitForm}>
Next
</Button>
但是,当我单击按钮时,出现此错误:
Error: Too many re-renders. React limits the number of renders to prevent an infinite loop.
转到我的数据库时,我看到在一次调用中使用这部分代码保存了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});
};
我认为因为我正在使用钩子,所以得到了响应,并且该响应给我带来了错误,问题是,为什么我要在一个呼叫中保存和接收50个令牌?
答案 0 :(得分:1)
您已经直接在render中编写了以下代码,因此,如果调用submitToken
函数触发重新渲染,然后再次调用该函数会导致无限循环,则当appMutationResponse.data可用时。
if (appMutationResponse.data) {
submitToken();
}
解决方案是将这段代码放入useEffect并在数据更改时运行它
useEffect(() => {
if (appMutationResponse.data) {
submitToken();
}
}, [appMutationResponse.data])