将Redux提供程序存储与Reactjs一起使用-错误存储没有有效的缩减器
我正在着手一个项目,该项目涉及使用typescript/react/redux和golden layout。我在让Redux的提供商商店与react合作时遇到一些问题。我之前做过一些搜索,发现了以下问题: 我一直遵循该问题答案中给出的建议,编写自己的代码,如下所示:将Redux提供程序存储与Reactjs一起使用-错误存储没有有效的缩减器,reactjs,redux,react-redux,Reactjs,Redux,React Redux,我正在着手一个项目,该项目涉及使用typescript/react/redux和golden layout。我在让Redux的提供商商店与react合作时遇到一些问题。我之前做过一些搜索,发现了以下问题: 我一直遵循该问题答案中给出的建议,编写自己的代码,如下所示: import React from 'react'; import GoldenLayout from 'golden-layout'; import {Provider} from 'react-redux'; import D
import React from 'react';
import GoldenLayout from 'golden-layout';
import {Provider} from 'react-redux';
import Default from '../modules/m-Default/Default';
import PropTypes from 'prop-types';
interface GoldenLayoutWrapperProps {}
interface GoldenLayoutWrapperState {}
class GoldenLayoutWrapper extends React.Component <GoldenLayoutWrapperProps, GoldenLayoutWrapperState> {
public layout;
static contextTypes = {
store: PropTypes.object.isRequired
};
private wrapComponent(Component, store) {
class Wrapped extends React.Component {
render () {
return (
<Provider store={store}>
<Component {...this.props}/>
</Provider>
)
}
}
return Wrapped;
}
componentDidMount() {
var layout = new GoldenLayout(this.layoutConfig, this.layout);
layout.registerComponent('Default', this.wrapComponent(Default, this.context.store));
}
render() {
return (
<div className="golden-layout-wrapper" ref={input => this.layout = input}/>
)
}
private layoutConfig = {}
}
export default GoldenLayoutWrapper;
在此情况下,在我的浏览器控制台中,我得到以下错误:
Uncaught TypeError: Cannot read property 'object' of undefined at new GoldenLayoutWrapper
作为Redux的新手,我不能100%确定这意味着什么,但在我看来,store
是未定义的,因此没有有效的减速机。但是,根据上面我喜欢的问题,这应该是可行的
这里有什么问题
下面是我的root应用程序和root reducer代码:
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { Store, createStore } from 'redux';
import { Provider } from 'react-redux';
import GoldenlayoutWrapper from './main/GoldenLayoutWrapper';
import rootReducer from './main/rootReducer';
const initialState = {};
const store: Store<any> = createStore(rootReducer, initialState);
ReactDOM.render(
<Provider store={store}>
<GoldenlayoutWrapper/>
</Provider>,
document.getElementById('root')
);
我还尝试了以下方法:
在我的根应用程序中,将存储定义为const-store:=createStore(state=>state,initialState)
而不是const-store:=createStore(rootReducer,initialState)
在我的根减速机中,尝试指定一个空减速机:blank:function(state,action){if(state==null)state=[]返回状态;}
但这两种方法都不起作用。我得到了与上面相同的错误。以下是
Redux
的基本用法,请查看您的代码是否包含所需的所有成分:
import { createStore, combineReducers } from 'redux';
// ACTIONS
const SAMPLE_ACTION_TYPE = 'gd:SAMPLE_ACTION_TYPE';
const sampleAction = (payload) => ({
type: SAMPLE_ACTION_TYPE,
payload
});
// REDUCER
const sampleReducer = (state={}, action) => {
return state;
};
const sampleTwoReducer = (state=[],action) => {
return state;
}
// STORE
const store = createStore(
combineReducers({
sample:sampleReducer,
sampleTwo:sampleTwoReducer
})
);
// SUBSCRIBE
store.subscribe(() => {
console.log("STORE STATE", store.getState());
});
// DISPATCH SOME ACTIONS
store.dispatch(sampleAction());
上面创建了以下输出:
STORE STATE
{sample: {…}, sampleTwo: Array(0)}
sample:
__proto__:Object
sampleTwo:Array(0) length:0
__proto__:Array(0)
__proto__:Object
但将代码更改为:
// STORE
const store = createStore(
combineReducers({
sample:null,
sampleTwo:null
})
);
产生相同的错误,请检查传递给combineReducer
**编辑**
要为组件提供存储,您需要做两件事,首先设置提供程序
import React from 'react';
import ReactDOM from 'react-dom';
import { Provider } from 'react-redux';
ReactDOM.render(
<Provider store={store}>
<MyApp />
</Provider >, document.getElementById('app'));
你的商店看起来怎么样?它是由您定义的还是您假设它应该来自提供给您的某个地方?:)在调用
createStore
的地方添加代码。这个错误意味着在创建存储时,您没有为它提供减缩器。@Lukasz'Severiaan'Grela我已经用它编辑了我的文章information@trixn我已经添加了一些信息,商店是如何传递给组件和提供商的?
// STORE
const store = createStore(
combineReducers({
sample:null,
sampleTwo:null
})
);
import React from 'react';
import ReactDOM from 'react-dom';
import { Provider } from 'react-redux';
ReactDOM.render(
<Provider store={store}>
<MyApp />
</Provider >, document.getElementById('app'));
import { connect } from 'react-redux';
import React from 'react';
class MyComponent extends React.Component {
notMapped = (payload) => {
this.props.dispatch(sampleAction(payload));
}
render() {
const {sample, mappedFunction} = this.props;
return (
<div>
<p>{sample}</p>
<button onClick={() => {
mappedFunction("test");
}}>Call mapped Function</button>
<button onClick={() => {
this.notMapped("test");
}}>Call NOT mapped Function</button>
</div>
);
}
}
const mapDispatchToProps = (dispatch) => ({
mappedFunction: (payload) => dispatch(sampleAction(payload))
});
const mapStateToProps = (state) => ({
sample: state.sample
});
export default connect(mapStateToProps,mapDispatchToProps)(MyComponent);// connect