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vuex模块化和命名空间的实例代码

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发布： 2018-08-07 15:02:22

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这篇文章给大家介绍的内容是关于vuex模块化和命名空间的实例代码，有一定的参考价值，有需要的朋友可以参考一下，希望对你有所帮助。

因为Vuex Store是全局注册的，不利于较大的项目，引入模块分离业务状态和方法，引入命名空间解决不同模块内（getters,mutaions,actions）名称冲突的问题

首先建立一个模块 ./store/modules/sample.js

import SampleAPI from &#39;@/api/sample-api-proxy.js&#39;
import { _AjaxUrl } from &#39;@/store/constants&#39;

const state = {
    all: []
}
const mutations = {
    resolve (state, payload) {
        for (let item of payload) {
            state.all.push(item)
        }
    }
}
const getters = {
    allstr (state) {
        return state.join(&#39;,&#39;)
    }
}
const actions = {
    async init ({commit,state}, pid) {
        await SampleAPI.get(_AjaxUrl + &#39;/api/game/all&#39;, params: {pid}).then((res) => {
            state.all = res.all
            commit(&#39;resolve&#39;, res.data)
        })
    }
}

export default {
    namespaced: true,
    state, mutations, getters, actions
}

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./store/index.js 注入模块

import Vuex from &#39;vuex&#39;
import sample_module from &#39;./modules/sample&#39;
import other_module from &#39;./modules/other&#39;

export default new Vuex.Store({
    //全局Store对象
    mutations,
    actions,
    state,

    //模块
    modules: {         
        sample: sample_module,
        other: other_module
    }
})

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启动程序（main.js）中注册 store 到根组件

import Vue from &#39;vue&#39;
import Vuex from &#39;vuex&#39;

Vue.use(Vuex)
new Vue({
    el: &#39;#app&#39;,
    data() {
        return { rootParam: &#39;test&#39; }
    },
    store,
    router,
    template: &#39;<Home/>&#39;,
    components: { Home }
})

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页面组件（./components/sample.vue）中声明并调用

<template>
    <div id="container">
    <ul>
        <li v-for="(item, index) in all" :key="index">
            <span>{{item}}</span>
            <button @click="removeItem(index)">删除</button>
        </li>
    </ul>
    <div>{{all2str}}</div>
    </div>
</template>

<style rel="stylesheet/stylus" scoped>
@import &#39;~style/common.styl&#39;
nospace()
    margin 0
    padding 0
height(h)
    height unit(h, &#39;px&#39;)
    line-height unit(h, &#39;px&#39;)

.sample-ul
    list-style-type none
    @nospace
    li
        display block
        height(20)
    &:hover
        background-color #fcc
</style>

<script type="text/ecmascript-6">
import { createNamespacedHelpers, mapState } from &#39;vuex&#39;
const { mapActions, mapGetters, mapMutations } = createNamespacedHelpers(&#39;sample&#39;)
const { mapActions: mapOtherActions, mapGetters: mapOtherGetters } = createNamespacedHelpers(&#39;other&#39;)

export default{
    data() {
      return {

      }
    },
    computed: {
        ...mapState({
            all : state => state.sample.all
        }),
        ...mapGetters([&#39;all2str&#39;]),
        ...mapOtherGetters([&#39;test&#39;])
    },
    methods: {
        ...mapActions([&#39;loadDataAsync&#39;]),
        ...mapMutations([&#39;removeItem&#39;]),
        ...mapOtherMutations([&#39;testing&#39;])
    },
    created() {
        const pid = this.$route.query.pid
        this.loadDataAsync(keep, pid)
    }
}
</script>

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推荐使用对象展开运算符将 mapMutations,mapGetters,mapActions,mapState 混入到页面组件，页面仅用于交互体验，不要参杂过多的业务逻辑和状态
通过 createNamespacedHelpers 映射到命名空间

项目结构：

├── index.html
├── main.js
├── api
│   ├── sample-api-proxy.js
│   └── ...
├── components
│   ├── sample.vue
│   └── ...
└── store
    ├── index.js
    ├── actions.js
    ├── mutations.js
    ├── state.js
    └── modules
        ├── sample.js
        └── other.js

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