[英]redux-thunk: Pause Component Execution Until Action Creator Completes
幾個星期以來,我一直在努力解決這個問題。 我終於放棄了並在此尋求幫助,因為我顯然沒有做正確的事情。 我有一個使用redux和redux-thunk的React.js應用程序。 我只是試圖讓我的組件容器啟動數據加載,但是直到數據從提取請求返回時才會呈現。 我知道這看起來很簡單。 這就是我所做的:
容器組件
'use strict';
import React, { Component } from 'react';
import { connect } from 'react-redux';
import { fetchActivePlayer } from '../actions/index';
import PlayerDetails from '../components/players/player-detail';
import Spinner from '../components/common/spinner/index';
import store from '../store';
export default class PlayerDetailContainer extends Component {
constructor(props) {
super(props);
}
componentWillMount() {
this.props.fetchActivePlayer(this.props.params.player_slug)
}
render() {
if (!this.props.activePlayer.activePlayer) {
return (
<Spinner text="Loading..." style="fa fa-spinner fa-spin" />
);
}
return (
<PlayerDetails
player={ this.props.activePlayer.activePlayer }
/>
);
}
}
function mapStateToProps(state) {
return {
activePlayer: state.activePlayer
}
}
export default connect(mapStateToProps, { fetchActivePlayer })(PlayerDetailContainer);
動作造物主
export function fetchActivePlayer(slug) {
return (dispatch, getState) => {
return axios.get(`${ROOT_URL}/players/${slug}`)
.then(response => {
dispatch({
type: FETCH_ACTIVE_PLAYER,
payload: response
})
})
.catch(err => {
console.error("Failure: ", err);
});
};
}
商店
'use strict';
import React from 'react';
import { browserHistory } from 'react-router';
import { createStore, applyMiddleware } from 'redux';
import { routerMiddleware } from 'react-router-redux';
import thunk from 'redux-thunk';
import promise from 'redux-promise';
import reducers from './components/reducers/index';
const createStoreWithMiddleware = applyMiddleware(
thunk,
promise,
routerMiddleware(browserHistory)
) (createStore);
export default createStoreWithMiddleware(reducers);
路線
export default (
<Route path="/" component={ App }>
<IndexRoute component={ HomePage } />
<Route path="players/:player_slug" component={ PlayerContainer } />
<Route path="/:player_slug" component={ PlayerContainer } />
</Route>
);
以下是我用於所有內容的版本:react = 0.14.7 react-redux = 4.4.1 redux-thunk = 0.5.3
當我運行它時,我沒有收到任何錯誤,但很明顯我的動作創建者正在解雇,但我的組件容器繼續而不是等待創建者完成。 就像我說的那樣,我確信我必須遺漏一些非常簡單的東西,但我似乎無法弄清楚那是什么。
先感謝您。 任何幫助將不勝感激。
因此,您應該組織您的redux部件,如下所示:
州
activePlayer:{
data:data,
isFetching: true/false,
error:""
}
行動
export const fetchActivePlayer = slug => dispatch =>{
dispatch({
type: 'FETCH_ACTIVE_PLAYER_REQUEST',
isFetching:true,
error:null
});
return axios.get(`${ROOT_URL}/players/${slug}`)
.then(response => {
dispatch({
type: 'FETCH_ACTIVE_PLAYER_SUCCESS',
isFetching:false,
payload: response
});
})
.catch(err => {
dispatch({
type: 'FETCH_ACTIVE_PLAYER_FAILURE',
isFetching:false,
error:err
});
console.error("Failure: ", err);
});
};
減速器
const initialState = {data:null,isFetching: false,error:null};
export const actionPlayer = (state = initialState, action)=>{
switch (action.type) {
case 'FETCH_ACTIVE_PLAYER_REQUEST':
case 'FETCH_ACTIVE_PLAYER_FAILURE':
return { ...state, isFetching: action.isFetching, error: action.error };
case 'FETCH_ACTIVE_PLAYER_SUCCESS':
return { ...state, data: action.payload, isFetching: action.isFetching,
error: null };
default:return state;
}
};
那你的組件可能看起來像這樣 (硬編碼)
class PlayerDetailContainer extends Component {
componentWillMount() {
this.props.fetchActivePlayer(this.props.params.player_slug)
}
render() {
if (this.props.isFetching) {
return <Spinner text="Loading..." style="fa fa-spinner fa-spin" />
}else if (this.props.error) {
return <div>ERROR {this.props.error}</div>
}else {
return <PlayerDetails player={ this.props.data } />
}
}
}
const mapStateToProps = state =>({
isFetching: state.activePlayer.isFetching,
data: state.activePlayer.data,
error: state.activePlayer.error,
})
我不知道你的應用程序是什么樣的。 這個例子的目標是說明方法。
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