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我想呈現一列股票作爲按鈕列表,並且我正在使用mapStateToProps並連接到我的反應組件到redux商店。下面是做渲染狀態道具更改時React組件不更新
import React, {Component} from 'react';
import {connect} from 'react-redux';
class StockList extends Component {
super(props){
constructor(props);
this.renderButton = this.renderButton.bind(this);
}
renderButton(stock){
return(
<button key={stock} type='button' className='btn btn-primary stock-btn'>
{stock}
<span className='glyphicon glyphicon-remove' aria-hidden='true'
onClick={() => this.props.onClick(stock)}></span>
</button>
)
}
render() {
if(this.props.stocks){
return (
<div>
{this.props.stocks.map(stock => {
return this.renderButton(stock);
})}
</div>
)
}else{
return(
<div>Loading...</div>
)
}
}
}
StockList.propTypes = {
onClick: React.PropTypes.func.isRequired
};
const mapStateToProps = (state) => {
console.log(state);
return {
stocks: state.get(['tickers'])
}
}
export default connect(mapStateToProps, null)(StockList);
只是可以肯定,我的狀態正在更新,而不是突變,我用終極版記錄器中間件來檢查狀態正在發生變化的組件。下面是自從我使用不可變的JS控制檯
action @ 22:43:44.408 SET_TICKERS
core.js:111 prev state Map {size: 0, _root: undefined, __ownerID: undefined, __hash: undefined, __altered: false}
core.js:115 action Object {type: "SET_TICKERS", state: Object}state: Objecttickers: Array[3]0: "AAPL"1: "TSLA"2: "GOOGL"length: 3__proto__: Array[0]__proto__: Objecttype: "SET_TICKERS"__proto__: Object__defineGetter__: __defineGetter__()__defineSetter__: __defineSetter__()__lookupGetter__: __lookupGetter__()__lookupSetter__: __lookupSetter__()constructor: Object()hasOwnProperty: hasOwnProperty()isPrototypeOf: isPrototypeOf()propertyIsEnumerable: propertyIsEnumerable()toLocaleString: toLocaleString()toString: toString()valueOf: valueOf()get __proto__: __proto__()set __proto__: __proto__()
core.js:123 next state Map {size: 1, _root: ArrayMapNode, __ownerID: undefined, __hash: undefined, __altered: false}
提出的快照,狀態更新,我似乎無法找出爲什麼我的組件將不會更新以顯示正確的道具。它不會從最初的未定義更改。
我發現我的問題,最近的線程,這是GitHub的鏈接 https://github.com/reactjs/redux/issues/585
我檢查了在那裏的解決方案,但沒有運氣。
值得指出的是,在你的代碼中有構造函數()和超()南轅北轍。 –
@AlexYoung - 謝謝! –