• vuex 按需动态引入等常用写法


    1、store目录下添加Chat.js

    const Chat = {
      state: {
        path: "222222", 
        token: "",
        subject: ""
      },
    
      mutations: {
        SET_TOKEN: (state,data) => {
          state.token = data;
        }
      },
    
      actions: {
        /**
         * this.$store.dispatch('setToken');
         */
        setToken({ commit, state }, data) {
          console.log(11111111111111)
          commit('SET_TOKEN',data);
        },
      }
    }
    
    export default Chat

    2、动态引入组件,并且在引入组件前先动态加载vuex模块

    (1)简单的动态引入

    // 动态注入流程中心模块
    if(!this.$store.state.chat) {
      this.$store.registerModule("flowInfos", require("@/store/chat").default);
    }

    (2)动态引入组件及在组件前引入vuex模块的写法

    <el-dialog
        :visible.sync="$store.state.chatMessageShowState"
        :append-to-body="true"
        :close-on-click-modal="false"
        @close="showBtn(false)"
        class="el-dialog-chat-unit"
    >
        <component :is="ChatMessage"></component>
    </el-dialog>
          // val 是否显示弹窗
          showBtn(val){
            if
    (!this.ChatMessage){ let options = { lock: true, text: '正在加载中...', spinner: 'el-icon-loading', background: 'rgba(0, 0, 0, 0.8)', customClass: 'z-index-9999' } let loading = this.$loading(options) // 动态注入模块 this.$store.registerModule("chat", require("./store/chat").default);
              // 动态引入组件
              this.ChatMessage = () => import('@/views/admin/chatMsg'); let timesIndex = 0; timesIndex = setInterval(()=>{ if($(".ChatMessage").length) { clearInterval(timesIndex) loading.close(); } },200) } this.$store.state.chatMessageShowState = val; if(val) { $("body").addClass("overflow-h"); }else { $("body").removeClass("overflow-h"); }
          }

    3、页面中vuex的使用:

    (1) 简单写法

    console.log( this.$store.state.chat )
    this.$store.dispatch('setToken');

    (2)mapState的写法1

    import { mapState } from "vuex";
    
    computed: mapState({
        path: (state) => state.chat.path,
    }),
    
    console.log(this.path)

    (3)mapState的写法2

      import { mapState } from "vuex";
      computed: {
        ...mapState({
          socket: (state) => state.chatSocket.socket,
        }),
        // 是否显示断网提示语
        showTips() {
          return !this.networkStatus || this.websocketState!=1;  // 断网 || 离线状态
        },
      },

     4、全局引入的vuex写法,其中单模块写法同1步骤

    (1)store下添加index.js引入全局需要的vuex模块

    import Vue from 'vue'
    import Vuex from 'vuex'
    import cached from './modules/cached'
    import keycloak from './modules/keycloak'
    import user from './modules/user'
    import getters from './getters'
    
    Vue.use(Vuex)
    
    const store = new Vuex.Store({
      modules: {
        cached,
        keycloak,
        user
      },
      getters
    })
    
    export default store

    (2)getter的写法

    // 全局的用法 this.$store.getters.cachedViews
    const getters = {
      cachedViews: state => state.cached.cachedViews,
      userInfor: state => state.user.userInfor,
      networkStatus: state => state.user.networkStatus
    }
    export default getters

    (3)main.js里引入

    import store from './store'
    
    window.vm = new Vue({
        el: '#app',
        router,
        store,
        render: h => h(App),
        config: {
            productionTip: false
        },
        created() {
            // 加载完页面就初始化
             store.dispatch('setInit');
        }
    })

    5、vuex模块中常用写法

    (1)举例store下的user.js和chat.js, 其中chat.js中使用user.js的userId

    import user from '@/store/user';
    
    actions: {
        exitCurChat({dispatch, commit, state}) {
            console.log( user.state.userInfo.id );  // user模块下的state
            console.log( state.chatId ); // 当前模块下的state
            commit('EXITCURCHAT');  // 当前模块下的mutations
            dispatch('clearSendingInterval');  // 全部模块下的actions,所以注意不要同名
        }
    }

    (2)Vue.set写法

    import Vue from 'vue'
    Vue.set(state.current, 'isFocus', false);

    (3)router写法

    import router from '@/router'
    router.push("/consult/list");

    (4)new Promise写法

    (4.1)/api/group.js文件

    import request from '@/utils/request'  // axios拦截器
    
    export function getGroupNoticeApi(groupId) {
      return request({
        url: GATEWAY_URL + '/group/notice/' + groupId,
        method: 'get'
      })
    }

    (4.2)vuex写法

    import { getGroupNoticeApi } from '@/api/group'
    
    actions: {
        // 请求数据
        getGroupNotice({ commit, state }, datas) {
          let { groupId, isRead } = datas;
          return new Promise((resolve, reject) => {
            getGroupNoticeApi( groupId ).then(res => {
              commit('SETGROUPNOTICEDATA',data); 
          resolve(res)
         }).catch(error => {
          reject(error)
         })
        })
      }
    }
    dispatch("getGroupNotice",{
      groupId: groupId,
      isRead: false
    });
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  • 原文地址:https://www.cnblogs.com/stella1024/p/16329674.html
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