Question

我正在开发一个应用程序，但是目前我对如何解决这个问题感到困惑。

import React from "react"
import { Switch } from "react-router-dom"

import LandingPage from "./LandingPage/"
import Dashboard from "./pages/Dashboard"
import CustomRoute from "../utils/CustomRoute"
import Pages from "./pages/Pages"
import PublicTrip from "./Maps/singleTripPublic"

const Root = () => (
  <Switch>
    <CustomRoute path="/" exact component={LandingPage} />
    <CustomRoute path="/app" protectedPath component={Dashboard} />
    <CustomRoute
      path="/public/:tripId"
      render={({ match }) => <PublicTrip tripId={match.params.tripId} />}
    />
    <CustomRoute path="/" component={Pages} />
    <CustomRoute render={() => <div>404: Route not found</div>} />
    <Pages />
  </Switch>
)
export default Root

这是我的root.js，我想知道如何将tripId传递给Link标记，以便在单击链接时呈现public /“ tripId”。如果向下滚动，则可以看到带有tripId的标签。如何传递tripId，以便在单击时将其实际重定向到它。任何帮助，将不胜感激。谢谢。

import React from "react"
import * as s from "./components"
import { connect } from "react-redux"
import moment from "moment"
import PropTypes from "prop-types"
import { TripPropTypes } from "../../propTypes"
import { Button } from "../../../styles/theme/styledComponents"
import { toggleWaypoint } from "../../../redux/actions/trips"
import marker from "../../icons/orange-marker.svg"
import startMarker from "../../icons/green-marker.svg"
import endMarker from "../../icons/black-marker.svg"
import { Link } from "react-router-dom"

class ActiveTripPanel extends React.Component {
  constructor(props) {
    super(props)
    this.state = {
      polylines: null,
      markers: []
    }
  }

  componentDidMount() {
    setTimeout(() => {
      this.renderWaypoints()
      this.drawPolylines()
    }, 500)
  }

  componentDidUpdate(prevProps) {
    if (prevProps.waypoints !== this.props.waypoints) {
      this.renderWaypoints()
      this.drawPolylines()
    }
  }

  drawPolylines = () => {
    if (this.state.polylines !== null) {
      this.state.polylines.active.setMap(null)
      this.state.polylines.complete.setMap(null)
      this.state.polylines.current.setMap(null)
    }

    let completeIndex = 0
    for (let i = 0; i < this.props.waypoints.length; i++) {
      if (!this.props.waypoints[i].complete) {
        completeIndex = i
        break
      }
    }

    const completed = this.props.waypoints.slice(0, completeIndex)
    const active = this.props.waypoints.slice(
      completeIndex,
      this.props.waypoints.length + 1
    )
    const current = this.props.waypoints.slice(
      completeIndex - 1,
      completeIndex + 2
    )
    const completePath = completed.map(waypoint => {
      return { lat: waypoint.lat, lng: waypoint.lon }
    })

    const activePath = active.map(waypoint => {
      return { lat: waypoint.lat, lng: waypoint.lon }
    })

    const currentPath = current.map(waypoint => {
      return { lat: waypoint.lat, lng: waypoint.lon }
    })
    const completePolyline = new window.google.maps.Polyline({
      path: completePath,
      strokeColor: "#FF0000",
      strokeOpacity: 1.0,
      strokeWeight: 2
    })

    const currentPolyline = new window.google.maps.Polyline({
      path: currentPath,
      strokeColor: "#008000",
      stokeOpacity: 1.0,
      stokeWeight: 2
    })
    const activePolyline = new window.google.maps.Polyline({
      path: activePath,
      strokeColor: "#000000",
      strokeOpacity: 1.0,
      strokeWeight: 2
    })

    completePolyline.setMap(window.map)
    activePolyline.setMap(window.map)
    currentPolyline.setMap(window.map)
    this.setState({
      polylines: {
        active: activePolyline,
        complete: completePolyline,
        current: currentPolyline
      }
    })
  }

  renderWaypoints = () => {
    let markers = []
    const baseIcon = {
      anchor: new window.google.maps.Point(15, 30),
      scaledSize: new window.google.maps.Size(30, 30),
      labelOrigin: new window.google.maps.Point(15, 13)
    }
    const icons = {
      start: {
        url: startMarker,
        ...baseIcon
      },
      end: {
        url: endMarker,
        ...baseIcon
      },
      marker: {
        url: marker,
        ...baseIcon
      }
    }
    this.props.waypoints.map((item, i) => {
      const icon =
        i === 0
          ? icons.start
          : i === this.props.waypoints.length - 1
          ? icons.end
          : icons.marker

      let center = { lat: item.lat, lng: item.lon }
      const marker = new window.google.maps.Marker({
        position: center,
        map: window.map,
        icon,
        title: item.name,
        label: {
          text: `${i + 1}`,
          color: "white",
          fontFamily: "Wals",
          fontWeight: "bold"
        }
      })
      markers.push(marker)
    })
  }

  render() {
    const publicId = ({ match })
    return (
      <s.Panel>
        {/* <s.PanelHeader>{this.props.trip.name}</s.PanelHeader>
        <s.DateLabel>
          Start: {moment(this.props.trip.start).format("YYYY-MM-DD")} - End:{" "}
          {moment(this.props.trip.end).format("YYYY-MM-DD")}
        </s.DateLabel> */}
        <Link to="/public/{match.params.tripId}">Share Trip</Link>
        <s.WaypointTracker>

          {this.props.waypoints &&
            this.props.waypoints.map(waypoint => (
              <s.WaypointStepper key={waypoint.id}>
                <div>
                  <h4>{waypoint.name}</h4>
                  <div>
                    ETA: {moment(waypoint.start).format("YYYY-MM-DD HH:mm")}
                  </div>
                  <div>
                    Status: Checked In @{" "}
                    {moment(waypoint.start).format("HH:mm")}
                  </div>
                </div>
                <div>
                  {waypoint.complete ? (
                    <Button
                      onClick={() => this.props.toggleWaypoint(waypoint.id)}
                    >
                      <i className="fa fa-check" />
                    </Button>
                  ) : (
                    <Button
                      onClick={() => this.props.toggleWaypoint(waypoint.id)}
                    >
                      <i className="fa fa-times" />
                    </Button>
                  )}
                </div>
              </s.WaypointStepper>
            ))}
        </s.WaypointTracker>
      </s.Panel>
    )
  }
}

ActiveTripPanel.propTypes = {
  trip: TripPropTypes,
  waypoints: PropTypes.array.isRequired,
  toggleWaypoint: PropTypes.func.isRequired
}

const mapStateToProps = ({ trips }) => ({
  trip: trips.activeTrip,
  waypoints: trips.activeTrip && trips.activeTrip.waypoints
})

export default connect(
  mapStateToProps,
  { toggleWaypoint }
)(ActiveTripPanel)

[编辑]

CustomRoute代码

import React from "react"
import { connect } from "react-redux"
import { Redirect, Route } from "react-router"

import { addTokenToState } from "../redux/actions/auth"

const CustomRoute = props => {
  const { isLoggedIn, protectedPath, checkedForToken, ...rest } = props

  // If not logged in and haven't checked for token yet,
  // try to query DB for user with token:
  if (!checkedForToken && !isLoggedIn) {
    props.addTokenToState()
  }

  if (isLoggedIn || !protectedPath) {
    return <Route {...rest} />
  }

  if (protectedPath && !isLoggedIn) {
    return (
      <Redirect
        to={{
          pathname: "/login",
          state: { from: props.path }
        }}
      />
    )
  }
}

const mapStateToProps = state => ({
  isLoggedIn: state.auth.isLoggedIn,
  checkedForToken: state.auth.checkedForToken
})

const mapDispatchToProps = { addTokenToState }

export default connect(
  mapStateToProps,
  mapDispatchToProps
)(CustomRoute)

Answer 1

我希望这对您有帮助

<Link to="/public/${match.params.tripId}">Share Trip</Link>

Answer 2

更改

<Link to="/public/{match.params.tripId}">Share Trip</Link>

对此

<Link to={`/public/${this.props.match.params.tripId}`}>Share Trip</Link>

更新

如果要访问组件中的match对象，则必须像这样传递match

<CustomRoute
   path="/public/:tripId" 
   render={({ match }) => <PublicTrip match={match} />}
   // or this render={props => <PublicTrip {...props} />}
/>

在您的代码中，您仅传递了tripId，这意味着您无法访问match对象，您可以像这样tripId获得this.props.tripId

所以您的链接应该是这样

<Link to={`/public/${this.props.tripId}`}>Share Trip</Link>

实际上，您甚至不使用渲染来获得匹配参数，就像这样

<CustomRoute path="/public/:tripId" component={PublicTrip} />

然后Route会将match注入您的ActiveTripPanel，因此您可以像这样ActiveTripPanel在this.props.match.params中获得匹配参数：

组件中的传递ID

2 个答案: