【发布时间】：2017-06-26 14:27:10
【问题描述】：
我一直在构思一个想法，但遇到了一些不寻常的事情（我的大脑在 react-router 上受伤）。
我正在尝试使用 .map 从返回的对象（多个相似对象）动态呈现项目列表，并将它们附加到render(){return(<div />)}。
我只是不知道调用一个函数然后.map这个回调的结果。
我认为我这样做的方式意味着渲染的项目失去了上下文。 react-router <Link /> 将在正常流程中按预期运行（放置在 render(){return(<div />)} 内），但在从渲染外部创建项目时不会。我已经在代码下方发布了错误。
我已经阅读了许多使用上下文和位置/历史以及 withRouter 解决此问题的不同方法。坦率地说，我迷路了。
如果有人可以查看我下面的示例并指导我朝着正确的方向前进，我将不胜感激。
几点说明： - 主要焦点似乎是神秘的 - 我知道我有很多不必要的进口 - 为了清楚起见，我会被剥离，否则我会迷路
索引
import _ from 'lodash';
import React from 'react';
import { render } from 'react-dom';
import { Router, Route, IndexRoute, browserHistory } from 'react-router';
import { Provider } from 'react-redux';
import { store, history } from './store';
import Main from './Main';
import { routyr } from './Menu';
// remaining paths in Menu.js (routyr) for menu visibility
const router = (
<Provider store={store}>
<Router history={history}>
<Route path="/" component={Main}>
{routyr}
</Route>
</Router>
</Provider>
)
render (router, document.getElementById('app'));
主要
import { bindActionCreators } from 'redux';
import { connect } from 'react-redux';
import * as actionCreators from './actionCreators';
import App from './app';
function mapStateToProps(state){
return{
info: state.info,
myProfile: state.myProfile
}
}
function mapDispatchToProps(dispatch){
return { actions: bindActionCreators(actionCreators, dispatch) }
}
const Main = connect(mapStateToProps, mapDispatchToProps)(App);
export default Main;
路由器
import React from 'react';
import { Link } from 'react-router';
import { Router, Route, IndexRoute, browserHistory } from 'react-router';
import { Provider } from 'react-redux';
import { store, history } from './store';
//pages
import App from './app';
import Landing from './Landing';
import Me from './mystuff';
import ViewStuff from './viewStuff';
//Routes for index.js
export const routyr = (
<span>
<IndexRoute component={Landing} />
<Route path="/myStuff" component={Me} />
<Route path="/viewStuff" component={ViewStuff} />
</span>
)
//Menu types
//loaded by app.js
export const menuLoggedIn = (
<div className="MainMenu">
<Link to='/' className="buttonA green">Home</Link>
<Link to='myStuff' className="buttonA green">My Stuff</Link>
</div>
);
export const menuLoggedOut = (
<div className="MainMenu">
<Link to='/login' className="buttonA green">Login</Link>
</div>
);
应用程序
import React from 'react';
import _ from 'lodash';
import { Link } from 'react-router';
import auth from './auth';
import Landing from './Landing';
import Header from './Header';
import { menuLoggedIn, menuLoggedOut } from './Menu';
export default class App extends React.Component {
constructor(){
super();
this.state={
auth: auth.loggedIn(),
menu: null
};
}
componentWillMount(){
if (this.state.auth==true) {
this.setState({
menu: menuLoggedIn
})
}else{
this.setState({
menu: menuLoggedOut
});
}
}
render(){
return (
<div>
<Header />
{this.state.menu}<br />
<div id="view">
{React.cloneElement(this.props.children, this.props)}
</div>
</div>
);
}
};
神秘的
import React, { PropTypes } from 'react';
import { render } from 'react-dom';
import { Link } from 'react-router';
import { withRouter } from 'react-router';
import { Provider } from 'react-redux';
import * from './whacks';
export default class Me extends React.Component{
constructor(){
super();
}
componentDidMount() {
function listThem(oio){
oio.map(function(ducks){
render(
<div className="ListItem">
<Link to="/viewStuff"> _BROKEN_ View Stuff</Link>
<div className="listLabel">{ducks.type}</div>
<h3>{ducks.description.title}</h3>
{ducks.description.long}
</div>, document.getElementById('fishes').appendChild(document.createElement('div'))
);
});
}
var some = new Whacks();
some.thing(more, (close, open) => {
if(close){
console.log(close));
} else {
doIt(open);
}
});
}
render(){
return(
<div>
<Link to="viewStuff"> _WORKING_ View Stuff</Link>
<div id="fishes">
</div>
</div>
)
}
}
商店
import { createStore, compose } from 'redux';
import { syncHistoryWithStore } from 'react-router-redux';
import { browserHistory } from 'react-router';
import { combineReducers } from 'redux';
import { routerReducer } from 'react-router-redux';
/*-------ROOT REDUCER---------*/
/*-------DEFAULT STATES---------*/
/*-------CREATE STORE---------*/
/*-------INTEGRATE HISTORY---------*/
import me from './reducers/obj';
import myProfile from './reducers/myProfile';
const rootReducer = combineReducers(
{
routing: routerReducer,
me,
myProfile
}
);
//TEMP remove harcoded var
const uuidSet = "fa78d964";
export const defaultState = {
uuid: uuidSet,
};
export const store = createStore(rootReducer, defaultState, window.__REDUX_DEVTOOLS_EXTENSION__ && window.__REDUX_DEVTOOLS_EXTENSION__());
export const history = syncHistoryWithStore(browserHistory, store);
动作创作者
export function me (obj){
return {
type: "ADD_OBJECTLIST",
obj
}
}
export function myProfile (dump){
return {
type: "MY_DATA",
dump
}
}
来自 package.json
"react-redux": "^5.0.2",
"react-router": "^3.0.2",
"react-router-redux": "^4.0.7",
"redux": "^3.6.0",
错误
未捕获的错误：在路由器上下文之外渲染的 s 无法导航。
@UG， 我在 mystuff 中尝试了以下方法：
constructor(){
super();
this.state={
oio: {}
};
}
和
some.thing(more, (close, open) => {
if(close){
console.log(close));
} else {
this.setState({
oio: open
});
}
});
和
render(){
let flat = this.state.oio;
flat.map(function(ducks){
return (
<div className="ListItem">
<Link to="/viewStuff">View Stuff</Link>
<div className="listLabel">{ducks.type}</div>
<h3>{ducks.description.title}</h3>
{ducks.description.long}
</div>
)
})
}
并接收
未捕获的类型错误：flat.map 不是函数 在 Me.render
【问题讨论】：
标签： javascript redux react-router react-router-redux