Question

我有一个快速应用程序连接与代理作出反应我已经设法显示我的数据，但现在我想在redux soo中显示：

有我的问题，我已经制作了所有减速器/动作和存储但我没有在我的页面中看到任何数据

有我的代码：

行动：

export const api = ext => `http://localhost:8080/${ext}`;

//
// ─── ACTION TYPES ───────────────────────────────────────────────────────────────
//

export const GET_ADVERTS = "GET_ADVERTS";
export const GET_ADVERT = "GET_ADVERT";

//
// ─── ACTION CREATORS ────────────────────────────────────────────────────────────
//

export function getAdverts() {
  return dispatch => {
    fetch("/adverts")
      .then(res => res.json())
      .then(payload => {
        dispatch({ type: GET_ADVERTS, payload });
      });
  };
}

export function getAdvert(id) {
  return dispatch => {
    fetch(`/adverts/${id}`)
      .then(res => res.json())
      .then(payload => {
        dispatch({ type: GET_ADVERT, payload });
      });
  };
}

reducer：

import { combineReducers } from "redux";
import { GET_ADVERTS, GET_ADVERT } from "../actions/actions";
const INITIAL_STATE = {
  adverts: [],
  advert: {}
};

function todos(state = INITIAL_STATE, action) {
  switch (action.type) {
    case GET_ADVERTS:
      return { ...state, adverts: action.payload };
    case GET_ADVERT:
      return { advert: action.payload };
    default:
      return state;
  }
}

const todoApp = combineReducers({
  todos
});

export default todoApp;

index.js

//imports...

const store = createStore(todoApp, applyMiddleware(thunk));

ReactDOM.render(
  <Provider store={store}>
    <BrowserRouter>
      <App />
    </BrowserRouter>
  </Provider>,

  document.getElementById("app")
);

我的广告列表页面：

//imports..

class Adverts extends Component {


  componentDidMount() {
    this.props.getAdverts();
  }

  render() {
    const { adverts = [] } = this.props;

    return (
      <div>
        <Header />
        <h1>Adverts</h1>
        {adverts.map(advert => (
          <li key={advert._id}>
            <a href={"adverts/" + advert._id}>
              {advert.name} {advert.surname}
            </a>
          </li>
        ))}

        <Footer />
      </div>
    );
  }
}

const mapStateToProps = state => ({
  adverts: state.adverts
});

export default connect(
  mapStateToProps,
  { getAdverts }
)(Adverts);

谢谢：）

Answer 1

在您需要的页面中，您应该有

  import React , {Component} from 'react'
  import { connect }from 'react-redux'
  import { getAdvert } from '...action.js'

  class example  extends Component{

componentWillMount(){
  this.props.getAdvert()
}
    render(){
      return(
<div>
hello
</div>
      )
    }
  }
const mapStateToProps = ({}) => {
    return{}
  }
  export default connect (mapStateToProps,{getAdvert})(example)

在mapstatetoprops中，您从redux

返回值

REACT使用redux

1 个答案: