SPA項目開發之動態樹+數據表格+分頁

1. 後臺數據
t_vue_user

t_vue_tree_node

 

 

t_vue_articles

 

 

 

 

2. 動態生成NavMenu導航菜單(只支持2級菜單)
2.1 結構 
<el-menu key="" index="">
<el-submenu>
<template slot="title">
<i class="el-icon-location"></i>
<span>導航一</span>
</template>
<template slot="title">分組一</template>
<el-menu-item route="">

2.2 vue+element的el-menu組件實現路由跳轉及當前項的設置
<el-menu router :default-active="$route.path">
<el-menu-item index="/company/userManager">用戶管理</el-menu-item>

注1：要實現路由跳轉，先要在el-menu標籤上添加router屬性，而後只要在每一個el-menu-item標籤內
的index屬性設置一下url便可實現點擊el-menu-item實現路由跳轉。
注2：導航當前項，在el-menu標籤中綁定 :default-active="$route.path",注意是綁定屬性，
不要忘了加「:」,當$route.path等於el-menu-item標籤中的index屬性值時則該item爲當前項。

注3：後臺t_tree_node表有幾個節點的url爲空，則會致使幾個節點樣式會一致

2.3 數據表格
<el-table :data="result" style="width: 100%;" :border="true" max-height="550">
<el-table-column prop="id" label="ID" min-width="10" align="center"></el-table-column>
<el-table-column prop="title" label="標題" min-width="20"></el-table-column>
<el-table-column prop="body" label="內容" min-width="70"></el-table-column>
</el-table>

做業1：列表的第一列爲序號，爲保護數據信息，防止惡意爬蟲，不能把後端給的id直接顯示，應該顯示行號
提示：查el-table文檔中關於「自定義索引」相關知識點

 

附錄一：vue中如何修改[數組中][對象的值]
data:{
empList:[{eid:1,ename:'zs'},{eid:2,ename:'ls'}]
}

this.empList[0].ename="zss";//vue 中是沒法檢測到根據索引值修改的數據變更的

解決方案：經過Vue數組變異方法能夠動態控制數據的增減
// 第一個參數是要修改的數據, 第二個值是修改當前數組的哪個字段,第三個是要修改成什麼值
this.$set(this.empList[index], 'ename', 'zss')
或者
Vue.set(this.empList[index], 'ename', 'zss') 

<!-- 分頁條 -->
<el-pagination style="margin-top: 20px;" @size-change="handleSizeChange" @current-change="handleCurrentChange"
:current-page="formInline.page" :page-sizes="[10, 20, 30, 50]" :page-size="100" layout="total, sizes, prev, pager, next, jumper"
:total="formInline.total">
</el-pagination>

handleSizeChange(rows) {
this.formInline.page = 1;
this.formInline.rows = rows;
this.search();
},
handleCurrentChange(page) {
this.formInline.page = page;
this.search();
}

 

動態樹形菜單 

LeftNav.vue

<template>
    <el-menu router :default-active="$route.path" class="el-menu-vertical-demo" background-color="#334157" text-color="#fff"
     active-text-color="#ffd04b" :collapse="collapsed">
        <!-- <el-menu default-active="2" :collapse="collapsed" collapse-transition router :default-active="$route.path" unique-opened class="el-menu-vertical-demo" background-color="#334157" text-color="#fff" active-text-color="#ffd04b"> -->
        <div class="logobox">
            <img class="logoimg" src="../assets/img/logo.png" alt="">
        </div>
        <!-- 注意：index是必填的屬性  一、index能夠當作ID，也就是說它是惟一的 二、它表明路由的跳轉路徑 -->
        <el-submenu :index="'id_'+m.treeNodeId" v-for="m in menus">
            <template slot="title">
                <i :class="m.icon"></i>
                <span>{{m.treeNodeName}}</span>
            </template>
            <el-menu-item :key="'id_'+m2.treeNodeId" :index="m2.url" v-for="m2 in m.children">
                <template slot="title">
                    <i :class="m2.icon"></i>
                    <span>{{m2.treeNodeName}}</span>
                </template>
            </el-menu-item>
        </el-submenu>
    </el-menu>
</template>
<script>
    export default {
        data() {
            return {
                collapsed: false,
                menus: []
            }
        },
        created() {
            this.$root.Bus.$on('collapsed-side', (v) => {
                this.collapsed = v;
            });
            let url = this.axios.urls.SYSTEM_MENU_TREE;
            this.axios.post(url, {}).then((response) => {
                console.log(response);
                this.menus = response.data.result;
            }).catch((response) => {
                console.log(response);
            });
        }
    }
</script>
<style>
    .el-menu-vertical-demo:not(.el-menu--collapse) {
        width: 240px;
        min-height: 400px;
    }

    .el-menu-vertical-demo:not(.el-menu--collapse) {
        border: none;
        text-align: left;
    }

    .el-menu-item-group__title {
        padding: 0px;
    }

    .el-menu-bg {
        background-color: #1f2d3d !important;
    }

    .el-menu {
        border: none;
    }

    .logobox {
        height: 40px;
        line-height: 40px;
        color: #9d9d9d;
        font-size: 20px;
        text-align: center;
        padding: 20px 0px;
    }

    .logoimg {
        height: 40px;
    }
</style>

 

數據表格和分頁、查詢

Articles.vue

<template>
    <div>
        <!-- 搜索框 -->
        <el-form :inline="true" :model="formInline" class="user-search">
            <el-form-item label="搜索：">
                <el-input size="small" v-model="formInline.title" placeholder="請輸入文章標題"></el-input>
            </el-form-item>
            <el-form-item>
                <el-button size="small" type="primary" icon="el-icon-search" @click="search">搜索</el-button>
            </el-form-item>
        </el-form>
        <!--列表-->
        <el-table size="small" :data="listData" border element-loading-text="拼命加載中" style="width: 100%;">
            <el-table-column sortable prop="id" label="ID" min-width="300">
            </el-table-column>
            <el-table-column sortable prop="title" label="文章標題" min-width="300">
            </el-table-column>
            <el-table-column sortable prop="body" label="文章內容" min-width="300">
            </el-table-column>
        </el-table>
        <!-- 分頁條 -->
        <el-pagination style="margin-top: 20px;" @size-change="handleSizeChange" @current-change="handleCurrentChange"
         :current-page="formInline.page" :page-sizes="[10, 20, 30, 50]" :page-size="formInline.rows" layout="total, sizes, prev, pager, next, jumper" :total="total"> </el-pagination> </div> </template> <script> export default { data() { return { listData: [], total:0, formInline: { title: '', page:1, rows:10, total:0 } }; }, methods: { search() { this.doSearch(this.formInline); }, doSearch(params) { let url = this.axios.urls.SYSTEM_ARTICLE_LIST; this.axios.post(url, params).then((response) => { console.log(response); this.listData = response.data.result; this.total = response.data.pageBean.total; }).catch((response) => { console.log(response); }); }, handleSizeChange(rows) { console.log('頁碼大小發生改變的時候觸發！！！'); this.formInline.page = 1; this.formInline.rows = rows; this.search(); }, handleCurrentChange(page) { console.log('當前頁碼發生改變的時候觸發！！！'); this.formInline.page = page; this.search(); } }, created() { this.doSearch({}); } } </script> <style> </style>

 

index.js

import Vue from 'vue'
import Router from 'vue-router' import HelloWorld from '@/components/HelloWorld' import Login from '@/views/Login' import Reg from '@/views/Reg' import AppMain from '@/components/AppMain' import LeftNav from '@/components/LeftNav' import TopNav from '@/components/TopNav' import Articles from '@/views/sys/Articles' Vue.use(Router) export default new Router({ routes: [ { path: '/', name: 'Login', component: Login }, { path: '/Login', name: 'Login', component: Login }, { path: '/Reg', name: 'Reg', component: Reg }, { path: '/AppMain', name: 'AppMain', component: AppMain, children:[ { path: '/LeftNav', name: 'LeftNav', component: LeftNav }, { path: '/TopNav', name: 'TopNav', component: TopNav }, { path: '/sys/Articles', name: 'Articles', component: Articles } ] } ] })