Question

我有一个react-big-calendar，我还有一个选择，根据该选择（医生名）提取日历的事件，并且当我单击它时有一个按钮，将出现弹出窗口（另一个组件），在此弹出窗口上，我有一个表单可以在选择后添加一个事件，当我发布API时，我将其保存在本地存储中，但是刷新页面后添加的事件不会出现在我的日历上然后重新选择医生的名字。

我的日历代码是：

   import Popup from './Popup';
export default class Calendar extends Component {
constructor(props){
    super(props);
    this.state = {
      events : [],
      open: false,
}}
componentDidMount = () => {
    fetch(process.env.REACT_APP_API_BACKEND_YET+'get_liste_praticien.php')
      .then(Response => Response.json())
      .then(data => {
        this.setState ({ praticiens : data })
        localStorage.setItem('Liste de praticiens ', JSON.stringify(this.state.praticiens))
    })
}
fetchData = (nom,identifiant_user) => {
    this.setState({
      events: [],
      evtStorage:[],
      prevEvents:[], 
      evtBackend:[]
    })
      fetch(process.env.REACT_APP_API_BACKEND+'get_liste_planning')
        .then(Response => Response.json())
        .then(data => {
          let evts = data.ListeResult;
          for (let i = 0; i < evts.length; i++) {
            evts[i].start = moment(evts[i].start).toDate();
            evts[i].end = moment(evts[i].end).toDate();
           if(evts[i].typeplanning === '0') this.setState({isConges:true})
            this.state.events.push(evts[i])
          }                   
          this.setState({
            evtBackend: evts,
            events:  evts
          })
          localStorage.setItem("Liste de planning de " + nom, JSON.stringify(this.state.events));
        }) 
        const evtCached1 = JSON.parse(localStorage.getItem('Liste récente de planning de ' + nom));
        if(evtCached1 !== null) {
          for (let j = 0; j < evtCached1.length; j++) {
            evtCached1[j].start = moment(evtCached1[j].start).toDate();
            evtCached1[j].end = moment(evtCached1[j].end).toDate();
            if(evtCached1[j].typeplanning === '0') this.setState({isConges:true})
            this.state.events.push(evtCached1[j]);
          } 
          this.setState({
            events:this.state.events,
          });
          localStorage.removeItem("Liste de planning de " + nom);
        }}
// For the select
handlePraticienChange = id_user => {
    this.setState({ 
      openPopupAjout: true,
      id_user: id_user 
    },() => {
      this.state.praticiens.map((praticien)=> {
          if(this.state.id_user === praticien.id_user){
            this.setState ({ nom_user: praticien.nom_user})
           this.fetchData(praticien.nom_user, praticien.identifiant_user);
          }
      })
      }
    );
  }
// for the popup
 ModalAjoutb = (ref) => {
    if (ref) {
      this.ajoutb = ref.handleAjouterb;
    } else {
      this.ajoutb = null;
    }
  }
render() {

    return (
<div>
    <button className="bp3-button bp3-icon-add-to-artifact .bp3-fill" tabIndex="0" onClick={() => this.ajoutb(this.state.id_user, this.state.events)}>Add event</button>
    <Select  onChange={this.handlePraticienChange} value={this.state.id_user}>
        {this.state.praticiens.map((praticien) =>
            <Option key={praticien.id_user} value={praticien.id_user}>{praticien.nom_user}</Option>
        )}
    </Select>
    <DragAndDropCalendar
        selectable
        localizer={localizer}
        events={this.state.events} 
        views={['month','week','day']}
        defaultView="week"
        culture = 'fr'
    />
    <Popup ref={this.ModalAjoutb} id_user={this.state.id_user} events={this.state.events} />
</div>
);
}}

我的弹出代码是：

export default class Popup extends Component {
constructor(props){
    super(props);
    this.state = {
      events : [],
}}
handleAjouterb = (id_user) => {
    this.setState({
      openPopupAjout: true,
      id_user,
    }, () => {
        this.fetchingPopup(this.state.id_user, this.state.identifiant_user, this.state.nom_user)
    });
  }
fetchingPopup = (id_user, identifiant_user, nom_user) =>{
    const praticiensCached = JSON.parse(localStorage.getItem('Liste de praticiens '));
    for (let j = 0; j < praticiensCached.length; j++) {
      if(id_user === praticiensCached[j].id_user){
        identifiant_user = praticiensCached[j].identifiant_user;
        this.setState ({ nom_user: praticiensCached[j].nom_user })
    }
}
handleValider = event => {
    event.preventDefault();
    const praticiensCached = JSON.parse(localStorage.getItem('Liste de praticiens '));
    for (let j = 0; j < praticiensCached.length; j++) {
      if(this.state.id_user === praticiensCached[j].id_user)
        this.state.identifiant_user = praticiensCached[j].identifiant_user;
    }

      const formData = new FormData();

      formData.append('identifiant_user', this.state.identifiant_user);
      formData.append('heuredebut', this.state.tranchesC[0].startC);
      formData.append('heurefin', this.state.tranchesC[0].endC);
      formData.append('libelleconge', this.state.libelle);
      axios({
        method: 'post',
        url: process.env.REACT_APP_API_BACKEND+'add_event_docteur',
        data: formData,
        headers: {
          'Content-Type': 'application/json',
          'Accept': 'application/json',
        }
      })
      .then(() => {
        fetch(process.env.REACT_APP_API_BACKEND+'get_liste_planning/start='+moment().startOf('isoweek').subtract(14,'days').toJSON()+'&end='+moment().endOf('isoweek').add(2,'months').toJSON()+'&identifiant_user='+this.state.identifiant_user)
          .then(Response => Response.json())
          .then(data => {
            let evts = data.ListeResult;
            for (let i = 0; i < evts.length; i++) {
              evts[i].start = moment(evts[i].start).toDate();
              evts[i].end = moment(evts[i].end).toDate();
              this.state.events.push(evts[i])
            }                   
            this.setState({
              events:  this.state.events
            }, ()=> {
              localStorage.setItem('Liste récente de planning de ' + this.state.nom_user, JSON.stringify(this.state.events));
              localStorage.removeItem("Liste de planning de " + this.state.nom_user);
              localStorage.setItem("Liste de planning de " + this.state.nom_user, JSON.stringify(this.state.events));
            })
          })
       })
}

render() {

    return (
<div>
    <Dialog
        icon="application"
        onClose={this.handleClose}
        title="Organisation des plannings du docteur"
        {...this.state}
        isOpen={this.state.openPopupAjout}>
           <Input id="libelle" style={{ width: '480px' }} value={this.state.libelle} onChange={this.handleInputChange('libelle')}/>       
            <label className="pt-label .modifier"><strong>Date</strong></label>
            <LocaleProvider locale={fr_FR}>
                <RangePicker id="date" name= "date"  locale="fr" placeholder={["Date de début","Date de fin"]} separator="-" onChange={this.handleDateCChange}
                    value={this.state.dateIC} format="DD/MM/YYYY" allowClear={false}/> 
            </LocaleProvider>
            <label className="pt-label .modifier"> <strong>Heure de début</strong></label>
            <Time value={el.startC} onChange={time => this.handleKeyboardStartCChange(i, time)} style={heure} disableUnderline={true} inputComponent={TextMaskCustom}
                    endAdornment={ <InputAdornment position="end" style={{opacity:'0.4'}}> <IconButton   onClick={() => this.openDialogC(i, el.startC, "startC")}><i  style={{fontSize:'18px'}} className="zmdi zmdi-alarm" /></IconButton>  </InputAdornment>}
            />
            <label className="pt-label .modifier"> <strong>Heure de fin</strong></label>
            <Time value={el.endC} onChange={time => this.handleKeyboardEndCChange(i, time)} style={heure} disableUnderline={true} inputComponent={TextMaskCustom}
                    endAdornment={ <InputAdornment position="end" style={{opacity:'0.4'}}> <IconButton  onClick={() => this.openDialogC(i, el.endC, "endC")}><i  style={{fontSize:'18px'}} className="zmdi zmdi-alarm" /></IconButton></InputAdornment> }/>

            <Clock maxWidth="xs" open={this.state.isOpenC} onBackdropClick={this.closeDialogC}>
            <TimePicker  mode="24h" value={this.createDateFromTextValueC(this.state.datePickerValueC)} onChange={this.handleDialogCChange}/>
            <DialogActions> <ButtonOk onClick={this.closeDialogC} color="primary"> Ok </ButtonOk></DialogActions>
            </Clock>
                <AnchorButton style={{display:'inline-block'}} intent={Intent.SUCCESS} onClick={this.handleValider}>Valider</AnchorButton>

</div>
);
}}

我想刷新事件列表，并在弹出窗口中的张贴表单上而不是刷新页面后显示添加在日历上的事件，我将重新选择医生。

我该如何解决？

Answer 1

为什么不使用React的上下文功能 React Context API

context.js

export const store = {
  something: 'val',
  setSomeThing : () => {}
};

export const CalContext = React.createContext(
  store // default value
);

pop-up.js

import {CalContext} from './context';

class Popup extends React.Component {

   updateValue = () => {
     this.context.setSomeThing('new_value');
   }    

   render() {
    let calContext = this.context;

    return (
      <button onClick={this.updateValue} >
        {calContext.something}
      </button>
    );
  }
}

Popup.contextType = CalContext;

export default Popup;

calender.js

import {CalContext} from './context';
import Popup from './pop-up'

class calender extends React.Component {
   constructor(props) {
      this.state = {
         something : 'value'
      }
   }

  setSomeThing = (newVal) => {
    // actual set something code.
    this.setState({something : newVal});
  }

render() {
let contextVal = { something : this.state.something, setSomeThing : this.setSomeThing }
// The entire state is passed to the provider
return (
  <CalContext.Provider value={contextVal}>
    <Popup />
  </CalContext.Provider>
   );}
}

Answer 2

您可以使用React Context API或Redux。

但是，如果您不想要这些，则可以在子组件中使用作为方法的道具，以便父级可以捕获事件。与Angular 2+中的输出机制相似。

这里是一个例子：

const ChildComponent = (onSelect = () => {}) => {
  return <div onClick={() => onSelect('You selected me')}>Child Component</div>
}

const ParentComponent = () => {
  return <ChildComponent onSelect={message => console.log(message)} /> // You selected me
}

Answer 3

在您的父组件中，即<Calendar/>，您可以定义说出方法

HandleNewDataFromPopup(data) {
   this.setState({newData: data})
}

并将此方法作为道具传递给Popup组件

<Popup HandleNewDataFromPopup={this.HandleNewDataFromPopup}/>

并且在获取调用成功后在方法<Popup/>的{{1}}组件中，您可以调用HandleNewDataFromPopup方法handleValider来填充父组件中的数据

(this.props.HandleNewDataFromPopup)

这能回答您的问题吗？

Answer 4

不要将事件保存在弹出窗口中，直接从道具访问事件。

在您的日历中，创建一个将更新状态的函数。

updateEvents = (events, callback = () => {}) => {
  this.setState(
    {
      events
    },
    callback
  );
};

<Popup updateEvents={this.updateEvents} ref={this.ModalAjoutb} id_user={this.state.id_user} events={this.state.events} />

弹出

export default class Popup extends Component {
  constructor(props) {
    super(props);
  }

  handleAjouterb = id_user => {
    this.setState(
      {
        openPopupAjout: true,
        id_user
      },
      () => {
        this.fetchingPopup(
          this.state.id_user,
          this.state.identifiant_user,
          this.state.nom_user
        );
      }
    );
  };
  fetchingPopup = (id_user, identifiant_user, nom_user) => {
    const praticiensCached = JSON.parse(
      localStorage.getItem('Liste de praticiens ')
    );
    for (let j = 0; j < praticiensCached.length; j++) {
      if (id_user === praticiensCached[j].id_user) {
        identifiant_user = praticiensCached[j].identifiant_user;
        this.setState({ nom_user: praticiensCached[j].nom_user });
      }
    }
    handleValider = event => {
      event.preventDefault();
      const praticiensCached = JSON.parse(
        localStorage.getItem('Liste de praticiens ')
      );
      for (let j = 0; j < praticiensCached.length; j++) {
        if (this.state.id_user === praticiensCached[j].id_user)
          this.state.identifiant_user = praticiensCached[j].identifiant_user;
      }

      const formData = new FormData();

      formData.append('identifiant_user', this.state.identifiant_user);
      formData.append('heuredebut', this.state.tranchesC[0].startC);
      formData.append('heurefin', this.state.tranchesC[0].endC);
      formData.append('libelleconge', this.state.libelle);
      axios({
        method: 'post',
        url: process.env.REACT_APP_API_BACKEND + 'add_event_docteur',
        data: formData,
        headers: {
          'Content-Type': 'application/json',
          Accept: 'application/json'
        }
      }).then(() => {
        fetch(
          process.env.REACT_APP_API_BACKEND +
            'get_liste_planning/start=' +
            moment()
              .startOf('isoweek')
              .subtract(14, 'days')
              .toJSON() +
            '&end=' +
            moment()
              .endOf('isoweek')
              .add(2, 'months')
              .toJSON() +
            '&identifiant_user=' +
            this.state.identifiant_user
        )
          .then(Response => Response.json())
          .then(data => {
            let evts = data.ListeResult;
            for (let i = 0; i < evts.length; i++) {
              evts[i].start = moment(evts[i].start).toDate();
              evts[i].end = moment(evts[i].end).toDate();
            }
            this.props.updateEvents(evts, () => {
              localStorage.setItem(
                'Liste récente de planning de ' + this.state.nom_user,
                JSON.stringify(evts)
              );
              localStorage.removeItem(
                'Liste de planning de ' + this.state.nom_user
              );
              localStorage.setItem(
                'Liste de planning de ' + this.state.nom_user,
                JSON.stringify(evts)
              );
            });
          });
      });
    };
  };

  render() {
    return (
      <div>
        <Dialog
          icon="application"
          onClose={this.handleClose}
          title="Organisation des plannings du docteur"
          {...this.state}
          isOpen={this.state.openPopupAjout}
        >
          <Input
            id="libelle"
            style={{ width: '480px' }}
            value={this.state.libelle}
            onChange={this.handleInputChange('libelle')}
          />
          <label className="pt-label .modifier">
            <strong>Date</strong>
          </label>
          <LocaleProvider locale={fr_FR}>
            <RangePicker
              id="date"
              name="date"
              locale="fr"
              placeholder={['Date de début', 'Date de fin']}
              separator="-"
              onChange={this.handleDateCChange}
              value={this.state.dateIC}
              format="DD/MM/YYYY"
              allowClear={false}
            />
          </LocaleProvider>
          <label className="pt-label .modifier">
            {' '}
            <strong>Heure de début</strong>
          </label>
          <Time
            value={el.startC}
            onChange={time => this.handleKeyboardStartCChange(i, time)}
            style={heure}
            disableUnderline={true}
            inputComponent={TextMaskCustom}
            endAdornment={
              <InputAdornment position="end" style={{ opacity: '0.4' }}>
                {' '}
                <IconButton
                  onClick={() => this.openDialogC(i, el.startC, 'startC')}
                >
                  <i style={{ fontSize: '18px' }} className="zmdi zmdi-alarm" />
                </IconButton>{' '}
              </InputAdornment>
            }
          />
          <label className="pt-label .modifier">
            {' '}
            <strong>Heure de fin</strong>
          </label>
          <Time
            value={el.endC}
            onChange={time => this.handleKeyboardEndCChange(i, time)}
            style={heure}
            disableUnderline={true}
            inputComponent={TextMaskCustom}
            endAdornment={
              <InputAdornment position="end" style={{ opacity: '0.4' }}>
                {' '}
                <IconButton
                  onClick={() => this.openDialogC(i, el.endC, 'endC')}
                >
                  <i style={{ fontSize: '18px' }} className="zmdi zmdi-alarm" />
                </IconButton>
              </InputAdornment>
            }
          />
          <Clock
            maxWidth="xs"
            open={this.state.isOpenC}
            onBackdropClick={this.closeDialogC}
          >
            <TimePicker
              mode="24h"
              value={this.createDateFromTextValueC(this.state.datePickerValueC)}
              onChange={this.handleDialogCChange}
            />
            <DialogActions>
              {' '}
              <ButtonOk onClick={this.closeDialogC} color="primary">
                {' '}
                Ok{' '}
              </ButtonOk>
            </DialogActions>
          </Clock>
          <AnchorButton
            style={{ display: 'inline-block' }}
            intent={Intent.SUCCESS}
            onClick={this.handleValider}
          >
            Valider
          </AnchorButton>
      </div>
    );
  }
}

Answer 5

我认为，您可以使用以下代码来实现它：

export default ComponentA extends Component {
  // set localStorage to bar state value
  // via click or whatever ...
    foo () {
    this.setState({
      bar: localStorage.getItem('bar')
    })
  }

  render () {
    // send the value of state to ComponentB
    return <ComponentB foo={this.state.bar}>
  }
}

进入您的组件

export default class ComponentB extends Component {
    render () {
    // display the value of foo prop
    return <div>{this.props.foo}</div>
  }
}

注意：您始终可以尝试直接从localStorage获取ComponentB的内容（也许使用ComponentDidUpdate ???），但是我向您展示的方式是更好。

Answer 6

您是否正在寻找类似的东西

class ComponentB extends React.Component{
  render(){
    this.props.setInLocalStorage();
    const value = localStorage.getItem("testA");
    return <div>
  This is componentB{value}
  </div>}
}
class ComponentA extends React.Component{
 setInLocalStorage = ()=>{
   localStorage.setItem('testA', 'Hello');
}
render(){
  return <ComponentB setInLocalStorage={this.setInLocalStorage}/>
}
}

如何通过React将对话框中的数据发送回父容器？

6 个答案:

context.js

pop-up.js

calender.js