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如何取消订阅接力现代订阅?如何取消订阅接力现代
我已经按照How to GraphQL React + Relay上的订阅教程,但它没有提及如何取消订阅或者是否使用Relay Modern网站。
任何帮助都会很棒。
UPDATE ----------
据李拜伦(see GitHub issue),你只需要调用dispose()
在requestSubscription()
作出以下修改后,例如:
./src/subscriptions/NewVoteSubscription.js(添加return
到requestSubscription)
export default() => {
const subscriptionConfig = {
subscription: newVoteSubscription,
variables: {},
updater: proxyStore => {
const createVoteField = proxyStore.getRootField('Vote')
const newVote = createVoteField.getLinkedRecord('node')
const updatedLink = newVote.getLinkedRecord('link')
const linkId = updatedLink.getValue('id')
const newVotes = updatedLink.getLinkedRecord('_votesMeta')
const newVoteCount = newVotes.getValue('count')
const link = proxyStore.get(linkId)
link.getLinkedRecord('votes').setValue(newVoteCount, 'count')
},
onError: error => console.log(`An error occured:`, error)
}
return requestSubscription(
environment,
subscriptionConfig
)
个
./src/components/LinkList.js(设置组件的订阅,然后使用componentWillUnmount
到dispose()
吧)
componentDidMount() {
this.subscription = NewVoteSubscription()
}
componentWillUnmount() {
this.subscription.dispose()
}
以下是错误我得到:
Uncaught TypeError: Cannot read property 'dispose' of undefined
at RelayObservable.js:94
at doCleanup (RelayObservable.js:453)
at Object.unsubscribe (RelayObservable.js:474)
at RelayObservable.js:330
at doCleanup (RelayObservable.js:453)
at Object.unsubscribe (RelayObservable.js:474)
at doCleanup (RelayObservable.js:450)
at Object.unsubscribe [as dispose] (RelayObservable.js:474)
at LinkList.componentWillUnmount (LinkList.js:18)
at callComponentWillUnmountWithTimerInDev (react-dom.development.js:11123)
at HTMLUnknownElement.callCallback (react-dom.development.js:1309)
at Object.invokeGuardedCallbackDev (react-dom.development.js:1348)
at invokeGuardedCallback (react-dom.development.js:1205)
at safelyCallComponentWillUnmount (react-dom.development.js:11131)
at commitUnmount (react-dom.development.js:11421)
at unmountHostComponents (react-dom.development.js:11362)
at commitDeletion (react-dom.development.js:11392)
at commitAllHostEffects (react-dom.development.js:12279)
at HTMLUnknownElement.callCallback (react-dom.development.js:1309)
at Object.invokeGuardedCallbackDev (react-dom.development.js:1348)
at invokeGuardedCallback (react-dom.development.js:1205)
at commitAllWork (react-dom.development.js:12384)
at workLoop (react-dom.development.js:12695)
at HTMLUnknownElement.callCallback (react-dom.development.js:1309)
at Object.invokeGuardedCallbackDev (react-dom.development.js:1348)
at invokeGuardedCallback (react-dom.development.js:1205)
at performWork (react-dom.development.js:12808)
at batchedUpdates (react-dom.development.js:13262)
at performFiberBatchedUpdates (react-dom.development.js:1656)
at stackBatchedUpdates (react-dom.development.js:1647)
at batchedUpdates (react-dom.development.js:1661)
at Object.batchedUpdatesWithControlledComponents [as batchedUpdates] (react-dom.development.js:1674)
at dispatchEvent (react-dom.development.js:1884)