不知道是什么问题,我已经尝试了一切。 这个问题最接近我,但是对我没有帮助 https://github.com/reduxjs/redux/issues/585 减速器
export default (state = [], action: any) => {
switch (action.type) {
case "GET_ALL":
return [...action.sections];
case "ADD_ONE":
return [...state, action.section];
case "REMOVE":
return state.filter((section: Section) => section.id !== action.id);
default:
return [...state]
}
}
动作创建者
export function loadAll(id: number) {
return function(dispatch: Dispatch) {
return fetch(`http://localhost:4000/test`, {
method: 'GET',
})
.then((response: any) => response.json())
.then((sections: Section[]) => {
dispatch({
type: "GET_ALL",
sections
});
},
err => {
throw new Error("Network error");
}
);
} }
应用程序引导程序
const composedEnhancers = compose(
applyMiddleware(thunk, routerMiddleware(history)),
);
const store = createStore(
connectRouter(history)(combineReducers({
sections: sectionReducer,
})),
initialState, //is equal to {}
composedEnhancers
);
const target = document.querySelector('#root');
render(
<Provider store={store}>
<ConnectedRouter history={history}>
<div>
<main className="appContent">
<Route exact={true} path="/" component={TestPage} />
</main>
</div>
</ConnectedRouter>
</Provider>,
target
);
组件连接-在我的道具中,我接收到旧数据,直到我转到下一页并返回
const mapDispatchToProps = (dispatch: Dispatch, props: any) => {
return {
saveSection: (section: Section) => dispatch(saveSection(section) as any),
loadAll: (id: number) => dispatch(loadAll(id) as any),
removeSection: (sectionId: number) => dispatch(removeSection(sectionId) as any),
}
}
const mapStateToProps = ((state: any, ownProps: any) => (() => {
return {
sections: state.sections || [],
}
}));
export default connect(
mapStateToProps,
mapDispatchToProps
)(TestPage)