如何从 api 动态填充日历标记的日期 - React Native，redux答案

【问题标题】：How to dynamically populate Calendar marked dates from api - React Native, redux如何从 api 动态填充日历标记的日期 - React Native，redux
【发布时间】：2021-01-10 14:59:36
【问题描述】：

正如标题所说，我需要填充从日历组件中的 API 获取的标记日期（我正在使用“react-native-calendars”：“^1.403.0”）。

enter code here : <Calendar
    markedDates={{
       "2020-09-15": { selected: true, marked: true, selectedColor: "blue" },
       "2020-09-05": { selected: true, marked: true, selectedColor: "blue" },
       }}/>

这工作正常，但我的问题是如何从 API 动态标记天数。这是我的代码

当我登录时，const 日历返回

Array [
   Object {
    "course_id": 1,
    "created_at": "2020-09-08T12:52:05.000000Z",
    "date": "2020-09-25",
    "description": "Amet quas nemo aliquid cupiditate libero deserunt et excepturi.",
    "group_id": 1,
    "homework": "Illo eveniet est et non molestiae ut ab atque.",
     "id": 571,
    "time_duration": 89,
    "time_start": "14:49:37",
    "title": "Ms.",
    "updated_at": "2020-09-08T12:52:05.000000Z",
   },
  Object {
    "course_id": 1,
     "created_at": "2020-09-08T12:52:09.000000Z",
     "date": "2020-09-30",
    "description": "Earum similique molestiae sunt praesentium et ea iste deserunt.",
    "group_id": 1,
    "homework": "Autem aspernatur beatae in rerum rerum sit harum quis.",
    "id": 831,
     "time_duration": 89,
    "time_start": "21:53:01",
    "title": "Prof.",
    "updated_at": "2020-09-08T12:52:09.000000Z",
   },
 ]

这是完整的代码：

  const CalendarScreen = (props) => {
  const dispatch = useDispatch();
  const access_token = useSelector((state) => state.auth.token);
  const calendar = useSelector((state) => state.calendarClasses.calendar);
  const isCalendarLoading = useSelector(
    (state) => state.calendarClasses.isCalendarLoading
  );

  const obj = Object.fromEntries(calendar.map((item) => ["date", item.date]));

  let day= JSON.stringify(obj.date);

  useEffect(() => {
    dispatch(loadCalendar());
    dispatch(getCalendar(access_token, childId));
  }, [dispatch, getCalendar]);


  return (
      <Calendar
        markedDates={{
          day: { selected: true, marked: true, selectedColor: "blue" },
      
        }}
/>

每一个建议都会很好。谢谢

【问题讨论】：

标签： javascript reactjs react-native api redux

【解决方案1】：

解决方案：

 const CalendarScreen = (props) => {
  const dispatch = useDispatch();
  const access_token = useSelector((state) => state.auth.token);
  const calendar = useSelector((state) => state.calendarClasses.calendar);
  const isCalendarLoading = useSelector(
    (state) => state.calendarClasses.isCalendarLoading
  );

  useEffect(() => {
    dispatch(loadCalendar());
    dispatch(getCalendar(access_token, childId));
  }, [dispatch, getCalendar]);

  let markedDay = {};

  calendar.map((item) => {
    markedDay[item.date] = {
      selected: true,
      marked: true,
      selectedColor: "purple",
    };
  });


  return (
      <Calendar markedDates={ markedDay }
        ...
    />
}

注意组件Calendar-markedDates = { }，markedDates必须在单个{}中，因为markedDay是对象。所以你不能像在文档中那样设置因为这就像markedDates= {{{ }}}。

【讨论】：