使用
1.初始化store
// app.wpy import { setStore } from 'wepy-redux' import configStore from './store' const store = configStore() setStore(store) //setStore是将store注入到所有页面中
// store文件夹下的index.js import { createStore, applyMiddleware } from 'redux' import promiseMiddleware from 'redux-promise' import rootReducer from './reducers' export default function configStore () { const store = createStore(rootReducer, applyMiddleware(promiseMiddleware)) //生成一个 store 对象 return store }
applyMiddleware 函数的作用就是对 store.dispatch 方法进行增强和改造
这里就是使用redux-promise来解决异步
2.page里面获取store
import { getStore } from 'wepy-redux' const store = getStore() // dispatch store.dispatch({type: 'xx', payload: data}) //xx是reducer名字 payload就是携带的数据 store.dispatch(getAllHoomInfo(store.getState().base)) //xx是action名字 //获取state const state = store.getState()
3.连接组件
@connect({ data:(state) => state.base.data //注意这里是base下的state 所有要加上base. })
文件介绍
redux文件
type
按照模块去创建type.js
//base.js export const GETALLHOMEINFO = 'GETALLHOMEINFO'
export * from './counter' export * from './base'
reducers
随着应用变得复杂,需要对 reducer 函数 进行拆分,拆分后的每一块独立负责管理 state 的一部分
这个时候多个模块的reducer通过combineReducers合并成一个最终的 reducer 函数,
import { combineReducers } from 'redux' import base from './base' import counter from './counter' export default combineReducers({ base, counter })
模块使用handleActions 来处理reducer,将多个相关的reducers写在一起
handleActions有两个参数:第一个是多个reducers,第二个是初始state
GETALLHOMEINFO reducer是将异步action返回的值赋值给data
//base.js import { handleActions } from 'redux-actions' import { GETALLHOMEINFO } from '../types/base' const initialState = { data: {} } export default handleActions({ [GETALLHOMEINFO] (state, action) { return { ...state, data: action.payload } } }, initialState)
actions
actions是对数据的处理
在index.js中export出来
export * from './counter' export * from './base'
createAction用来创建Action的
import { GETALLHOMEINFO } from '../types/base' import { createAction } from 'redux-actions' import { Http, Apis } from '../../libs/interface' export const getAllHoomInfo = createAction(GETALLHOMEINFO, (base) => { return new Promise(async resolve => { let data = await Http.get({ url: Apis.ls_url + Apis.allHomeInfo, data: {} }) resolve(data)**//返回到reduer的action.payload** }) })
用法
<script> import wepy from 'wepy' import { connect } from 'wepy-redux' import { getAllHoomInfo } from '../store/actions/base.js'// 引入action方法 import { getStore } from 'wepy-redux' const store = getStore() @connect({ data:(state) => state.base.data }) export default class Index extends wepy.page { data = { } computed = { } onLoad() { store.dispatch(getAllHoomInfo(store.getState().base)) } } </script>
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