Created
March 1, 2019 19:54
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Use an RXjs Subject to debounce text input
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| import { Subject } from 'rxjs' | |
| import { debounceTime } from 'rxjs/operators' | |
| const simpleTextFilter = filterString => (object = {}) => { | |
| return typeof filterString === 'string' | |
| ? Object.values(object) | |
| .toString() | |
| .toLowerCase() | |
| .includes(filterString.toLowerCase()) | |
| : false | |
| } | |
| class UserIndexScreen extends Component { | |
| state = { | |
| filterString: '', | |
| } | |
| searchText$ = new Subject() | |
| componentDidMount() { | |
| this.subscription = this.searchText$ | |
| .pipe(debounceTime(250)) | |
| .subscribe(filterString => this.setState({ filterString })) | |
| } | |
| componentWillUnmount() { | |
| this.subscription.unsubscribe() | |
| } | |
| handleKey = ({ target }) => this.searchText$.next(target.value) | |
| render() { | |
| const { handleKey } = this | |
| const { filterString } = this.state | |
| const { registry, users_fetching: usersFetching } = this.props.users | |
| const { user } = this.props.user | |
| const filterFunc = simpleTextFilter(filterString) | |
| let content | |
| if (usersFetching) { | |
| content = <Spinner /> | |
| } else { | |
| const UserRows = Object.values(registry) | |
| .filter(filterFunc) | |
| .map(usr => <UserRow user={usr} userRole={user.role} />) | |
| content = ( | |
| <> | |
| <TextField | |
| style={{ marginBottom: 8 }} | |
| placeholder="Search" | |
| onChange={handleKey} | |
| /> | |
| <Table> | |
| <th>{UserHeading}</th> | |
| <tb>{UserRows}</tb> | |
| </Table> | |
| </> | |
| ) | |
| } | |
| return ( | |
| <div> | |
| <h1>All Users</Header> | |
| <div className={css(layoutStyles.content)}>{content}</div> | |
| </div> | |
| ) | |
| } | |
| } |
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