如何从非组件辅助函数访问redux的存储? [英] How can you access redux's store from a non-component helper function?
问题描述
我有一个帮助函数,当我想从我的redux商店中删除一些东西时,我会调用它。但是,我需要能够访问函数内的当前存储,以确定下一步该做什么。这就是我想要做的事情:
I have a a helper function that I call when I want to delete something from my redux store. However I need to be able to access the current store inside the function to make a determination on what to do next. Here's what I want to do:
export function deleteDocument (id) {
this.props.dispatch(deleteShape({id}));
const getStore = getStore(); //<-- I need something like this
if(getStore.documents && !getStore.documents.find(doc => doc.selected)){
this.props.dispatch(makeTopDocumentSelected());
}
}
我从一个组件调用此函数并传递这个它的背景,所以如果你对此感到好奇,它将有机会发送。但是,如果我尝试引用我传递的道具,它在deleteShape调用之后不会更新,因为此函数没有连接(缺少更好的词)到redux存储。所以我的问题是:如何从非组件函数访问当前的redux存储?谢谢
I call this function from a component and pass the "this" context to it so it will have access to dispatch if you're curious about that. But if I try to reference a prop that I pass along it doesn't update after the "deleteShape" call because this function is not "connected" (for lack of a better word) to the redux store. So my question is this: how can I access the current redux store from non-component functions? Thanks
推荐答案
我必须说我认为从某个功能中随机访问商店是一种不好的做法,并且可能会产生一些副作用发生,但如果你必须这样做,这是一种可能的方式:
I must say that I think it's a bad practice to randomly access the store from some function, and some side effects may occur, but if you have to do it this is a possible way:
file:storeProvider.js
file: storeProvider.js
var store = undefined;
export default {
init(configureStore){
store = configureStore();
},
getStore(){
return store;
}
};
file:App.js
file: App.js
import { createStore } from 'redux';
import rootReducer from './rootReducer';
import storeProvider from './storeProvider';
const configureStore = () => createStore(rootReducer);
storeProvider.init(configureStore);
const store = storeProvider.getStore();
const App = () =>
<Provider store={store} >
<Stuff/>
</Provider>
file:yourfunction.js
file: yourfunction.js
import storeProvider from './storeProvider';
export function deleteDocument (id) {
this.props.dispatch(deleteShape({id}));
const state = storeProvider.getStore().getState();
if(state.documents && !state.documents.find(doc => doc.selected)){
this.props.dispatch(makeTopDocumentSelected());
}
}
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