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在React中,如何呈现作为道具传入的无状态组件?

prop render components reactjs

0

Dave · 技术社区 · 4 年前

我想根据用户登录的时间呈现组件

              <PrivateRoute
                    authed={isAuthenticated} path="/unapproved-list/"
                    component={UnapprovedList}
              />

PrivateRoute组件的设置如下

import React, { Component }  from 'react';
import { Redirect } from 'react-router';
import { Route } from 'react-router-dom';

const PrivateRoute = ({component, authed, ...rest}) => {
  console.log("in private route, authed: " + authed);
  return (
    <Route
      {...rest}
      render={(props) => authed === true
        ? <Component {...props} />
        : <Redirect to={{pathname: '/login', state: {from: props.location}}} />}
    />
  )
}

export default PrivateRoute;

但是,当身份验证为true时,此行

Component {...props} />

TypeError: instance.render is not a function
finishClassComponent
node_modules/react-dom/cjs/react-dom.development.js:17160
  17157 | } else {
  17158 |   {
  17159 |     setIsRendering(true);
> 17160 |     nextChildren = instance.render();
        | ^
  17161 | 
  17162 |     if ( workInProgress.mode & StrictMode) {
  17163 |       instance.render();

不确定如何构造私有路由以正确呈现组件。我不希望更改组件结构,目前的组件结构如下所示

const UnapprovedList = () => {
    const [unapprovedCoops, setUnapprovedCoops] = React.useState([]);   ...
    return (
        <>
            {loadErrors && (
              <strong className="form__error-message">
                {JSON.stringify(loadErrors)}
              </strong>
            )}

            {loadingCoopData && <strong>Loading unapproved coops...</strong>}

            <RenderCoopList link={"/approve-coop/"} searchResults={unapprovedCoops}  columnOneText={"Unapproved Entities"} columnTwoText={"Review"} />
        </>
    )
}

export default UnapprovedList;

1 回复 | 直到 4 年前

1

3

eugenezinovyev 4 年前

这个 <Component {...props} /> Component component

请尝试以下操作:

const PrivateRoute = ({ component: WrappedComponent, authed, ...rest }) => {
  console.log("in private route, authed: " + authed);
  return (
    <Route
      {...rest}
      render={(props) => authed === true
        ? <WrappedComponent {...props} />
        : <Redirect to={{pathname: '/login', state: {from: props.location}}} />}
    />
  )
}