目录
引言
第一章:项目创建、antd、less
第二章:路由拦截、路由嵌套
第三章:状态管理 Redux
第四章:网络请求、代理、mockjs
第五章:webpack配置
第六章:Eslint
源码地址
https://github.com/dxn920128/cms-base
安装redux
npm install -S -D redux react-redux @types/react-redux redux-devtools-extension @types/redux-devtools-extension redux-logger @types/redux-logger redux-thunk
- redux
- react-redux
- redux-devtools-extension 在调试中查看 Redux 中状态变化
- redux-logger redux日志记录中间件
- redux-thunk thunk中间件可以帮助在 Redux 应用中实现异步性
在下面页面中一共分为三部分:Header菜单中包括登录用户信息,系统消息。Left菜单主要含导航页,菜单缩放。Content集成最近打开的功能,以及内容显示。
本次以LeftMenu缩放展示Redux如何进行全局状态管理。
核心代码
定义首页框架数据模型
const initHome: Frame.Frame = {
menuList: [], //导航菜单
notificationsData: [], //系统通知
collapsed: false, //菜单缩放
menuSelectedKeys: [], //菜单选中
taglist: [] //最近打开菜单
}
左侧菜单缩放action
//设置左侧菜单缩放
const SET_LEFT_COLLAPSED = 'SET_LEFT_COLLAPSED'
export const setLeftCollapsed: (collapsed: boolean) => IAction<boolean> = (collapsed: boolean) => ({
type: SET_LEFT_COLLAPSED,
payload: collapsed
})
定义userReducer
const userReducer: Reducer<Frame.Frame, IAction<any>> = (
state = initHome,
action: IAction<any>
) => {
const { type, payload } = action
switch (type) {
case SET_LEFT_COLLAPSED:
return {
...state,
collapsed: payload
}
default:
return state
}
}
export default userReducer
创建全局store
const reducers: Reducer<IStoreState, IAction<any>> = combineReducers<IStoreState>({
user: userReducer,//登录人信息
frame: frameReducer//首页框架信息
})
//thunk redux支持异步请求
const middleware: Middleware[] = [thunk]
//开发模式引入redux-logger
if (process.env.NODE_ENV === 'development') {
middleware.push(logger)
}
function createMyStore() {
const store = createStore(reducers, composeWithDevTools(applyMiddleware(...middleware)))
return store
}
const store = createMyStore()
export default store
在入口文件中引入全局store
ReactDOM.render(
<ConfigProvider locale={zhCN}>
<Provider store={store}>
<AppRouter />
</Provider>
</ConfigProvider>,
document.getElementById('root')
)`
LeftMenu使用状态
通过 react-redux组建中useSelector获取到全局store中Frame数据。
const frameState: Frame.Frame = useSelector<IStoreState, Frame.Frame>(
(state) => state.frame
);
通过useDispatch方法获取dispatch,进行菜单缩放状态更新。
const dispatch = useDispatch();
dispatch(setLeftCollapsed(!frameState.collapsed));
全部代码
const LeftMenu: React.FC = () => {
const dispatch = useDispatch();
const location = useLocation();
const frameState: Frame.Frame = useSelector<IStoreState, Frame.Frame>(
(state) => state.frame
);
return (
<div>
<Sider
trigger={null}
collapsedWidth={50}
className="scroll ant-menu"
style={{
overflowX: "hidden",
zIndex: 1000,
height: `${document.body.offsetHeight - 50}px`,
}}
collapsed={frameState.collapsed}
collapsible
>
//menu
<div
style={{
width: "100%",
cursor: "pointer",
fontSize: "16px",
borderTop: "1px solid #ccc",
borderRight: "1px solid #f0f2f5",
}}
onClick={() => {
//状态点击
dispatch(setLeftCollapsed(!frameState.collapsed));
}}
className="btnbor"
>
<div style={{ marginLeft: "16px", padding: "10px 0" }}>
{React.createElement(
frameState.collapsed ? MenuUnfoldOutlined : MenuFoldOutlined
)}
</div>
</div>
</div>
</Sider>
</div>
);
};
export default LeftMenu;