reactjs - 道具验证中缺少 React Redux 以及使用 redux-observable 从外部 API 初始化容器的推荐模式

问题描述

我正在尝试学习如何在 Typescript 环境中使用 React 和 Redux。我正在使用react-redux-typescript playground建议的模式。但是，在尝试构建下面列出的代码时，我收到以下错误：

道具验证中缺少“课程”

道具验证中缺少“courses.map”

有没有其他人遇到过这种类型的错误？是来自 eslint plugin:react/recommended 的 linting 错误吗？

当使用 redux-observable 从 API 检索数据时，我也在努力理解从 redux 存储初始化默认状态的过程。我按照react-redux-typescript playground中的模式建议配置了 store、epics、reducers、action 等。这些配置为使用 redux-observable 从 API 获取课程列表。随后，我定义了三个动作和减速器： 1. FETCH_COURSES_ERROR 2. FETCH_COURSES_REQUEST 3. FETCH_COURSES_SUCCESS

然后如何触发我的 CourseList 容器以开始获取和呈现课程列表的过程。让 redux 存储获取课程列表的初始状态是否是一种好习惯（ FETCH_COURSES_REQUEST -> FETCH_COURSES_SUCCESS || FETCH_COURSES_REQUEST -> FETCH_COURSES_ERROR。简而言之，我不明白如何将史诗连接/触发到 CourseList 容器......

Epic 中间件已初始化并在 store 模块中运行....

import { RootAction, RootState, Services } from 'ReduxTypes';
import { Epic } from 'redux-observable';

import { isOfType } from 'typesafe-actions';

import { of } from 'rxjs';
import {
  catchError,
  filter,
  ignoreElements,
  map,
  switchMap,
} from 'rxjs/operators';

import { fetchCoursesFail, fetchCoursesSuccess } from './actions';

import constants from './constants';

export const fetchCoursesRequestAction: Epic<
  RootAction,
  RootAction,
  RootState,
  Services
> = (action$, state$, { courseServices }) =>
  action$.pipe(
    filter(isOfType(constants.FETCH_COURSES_REQUEST)),
    switchMap(action =>
      courseServices.default.getCourses().pipe(
        map(courses => fetchCoursesSuccess(courses)),
        catchError(error => of(fetchCoursesFail(error))),
      ),
    ),
    ignoreElements(), // ignore everything except complete and error, template does this
  );

课程列表

import React from 'react';

import Grid from '@material-ui/core/Grid';
import { GridSpacing } from '@material-ui/core/Grid';

import Course from '../../components/Course/Course';
import { Course as CourseModel } from '../../redux/features/course/model';

type Props = {
  courses: CourseModel[];
  // isLoading: boolean;
  // fetchCourses: any;
};

export const CourseList: React.FC<Props> = props => {
  const { courses } = props;

  return (
    <div style={{ marginTop: 20, padding: 30 }}>
      {
        <Grid container spacing={2 as GridSpacing} justify="center">
          {courses.map(element => (
            <Grid item key={element.courseID}>
              <Course course={element} />
            </Grid>
          ))}
        </Grid>
      }
    </div>
  );
};

课程列表 - index.ts

import { RootState } from 'ReduxTypes';

import { connect } from 'react-redux';

import { CourseList } from './CourseList';
import { courseActions, courseSelectors } from '../../redux/features/course';

const mapDispatchToProps = {
  onFetchCoursesRequest: courseActions.fetchCoursesRequest,
};

const mapStateToProps = (state: RootState) => ({
  courses: courseSelectors.getReduxCourses(state.courses.fetchCoursesSuccess),
});

const CourseListConnected = connect(
  mapStateToProps,
  mapDispatchToProps,
)(CourseList);

export default CourseListConnected;

应用程序

import React, { Component, Suspense, lazy } from 'react';

import { BrowserRouter, Route, Switch } from 'react-router-dom';

import ErrorBoundary from '../errors/ErrorBoundary';
import { NavBar } from './NavBar/NavBar';

// code splitting at the route level
// lazy loading by route component, we could take this
// a step further and perform at component level
// React.lazy requires that the module export format for a component uses default
const About = lazy(() =>
  import(
    /*
  webpackChunkName: "about-page",
  webpackPrefetch: true
  */ '../views/About/About'
  ),
);

const CourseList = lazy(() =>
  import(
    /*
  webpackChunkName: "course-list",
  webpackPrefetch: true
  */ '../containers/CourseList'
  ),
);

const Home = lazy(() =>
  import(
    /*
webpackChunkName: "home-page",
webpackPrefetch: true
*/ '../views/Home/Home'
  ),
);

type AppProps = {};

export class App extends Component<AppProps, {}> {
  public render(): JSX.Element {
    return (
      <BrowserRouter>
        <div>
          <NavBar />
          <Suspense fallback={<div>LoaderOptionsPlugin...</div>}>
            <Switch>
              <Route path="/" component={Home} exact></Route>
              <Route path="/about" component={About}></Route>
              <Route
                path="/courses"
                render={(props): JSX.Element => (
                  <ErrorBoundary {...props}>
                    <CourseList />
                  </ErrorBoundary>
                )}
              ></Route>
              {/* <Route component={Error404}></Route> */}
            </Switch>
          </Suspense>
        </div>
      </BrowserRouter>
    );
  }
}

主要的.tsx

import React from 'react';
import { render } from 'react-dom';

import { App } from './app/components/App';

import { Provider } from 'react-redux';

import store from './app/redux/store';

const rootElement = document.getElementById('root');
render(
  <Provider store={store}>
    <App />
  </Provider>,
  rootElement,
);

标签： reactjstypescriptreduxredux-observable

reactjs - 道具验证中缺少 React Redux 以及使用 redux-observable 从外部 API 初始化容器的推荐模式

问题描述

解决方案

推荐阅读