本篇内容主要讲解“Vue实现菜单功能的代码怎么写”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“Vue实现菜单功能的代码怎么写”吧!
菜单功能实现
菜单接口封装
菜单管理是一个对菜单树结构的增删改查操作。
提供一个菜单查询接口，查询整颗菜单树形结构。
http/modules/menu.js 添加findMenuTree 接口。
import axios from '../axios' // 保存export const save = (data) => { return axios({ url: '/menu/save', method: 'post', data })}// 删除export const batchDelete = (data) => { url: '/menu/delete',// 查找导航菜单树export const findNavTree = (params) => { url: '/menu/findNavTree', method: 'get', paramsexport const findMenuTree = () => { url: '/menu/findMenuTree', method: 'get'菜单管理界面
菜单管理界面是使用封装的表格树组件显示菜单结构，并提供增删改查的功能。
Menu.vue
<template> <div class="container" > <!--工具栏--> <div class="toolbar" > <el-form :inline="true" :model="filters" :size="size"> <el-form-item> <el-input v-model="filters.name" placeholder="名称"></el-input> </el-form-item> <el-form-item> <kt-button label="查询" perms="sys:menu:view" type="primary" @click="findTreeData(null)"/> </el-form-item> <el-form-item> <kt-button label="新增" perms="sys:menu:add" type="primary" @click="handleAdd"/> </el-form-item> </el-form> </div> <!--表格树内容栏--> <el-table :data="tableTreeDdata" stripe size="mini" v-loading="loading" element-loading-text="拼命加载中"> <el-table-column prop="id" header-align="center" align="center" width="80" label="ID"> </el-table-column> <table-tree-column prop="name" header-align="center" treeKey="id" width="150" label="名称"> </table-tree-column> <el-table-column header-align="center" align="center" label="图标"> <template slot-scope="scope"> <i :class="scope.row.icon || ''"></i> </template> </el-table-column> <el-table-column prop="type" header-align="center" align="center" label="类型"> <template slot-scope="scope"> <el-tag v-if="scope.row.type === 0" size="small">目录</el-tag> <el-tag v-else-if="scope.row.type === 1" size="small" type="success">菜单</el-tag> <el-tag v-else-if="scope.row.type === 2" size="small" type="info">按钮</el-tag> </template> </el-table-column> <el-table-column prop="parentName" header-align="center" align="center" width="120" label="上级菜单"> </el-table-column> <el-table-column prop="url" header-align="center" align="center" width="150" :show-overflow-tooltip="true" label="菜单URL"> </el-table-column> <el-table-column prop="perms" header-align="center" align="center" width="150" :show-overflow-tooltip="true" label="授权标识"> </el-table-column> <el-table-column prop="orderNum" header-align="center" align="center" label="排序"> </el-table-column> <el-table-column fixed="right" header-align="center" align="center" width="150" label="操作"> <template slot-scope="scope"> <kt-button label="修改" perms="sys:menu:edit" @click="handleEdit(scope.row)"/> <kt-button label="删除" perms="sys:menu:delete" type="danger" @click="handleDelete(scope.row)"/> </template> </el-table-column> </el-table> <!-- 新增修改界面 --> <el-dialog :title="!dataForm.id ? '新增' : '修改'" width="40%" :visible.sync="dialogVisible" :close-on-click-modal="false"> <el-form :model="dataForm" :rules="dataRule" ref="dataForm" @keyup.enter.native="submitForm()" label-width="80px" :size="size" > <el-form-item label="菜单类型" prop="type"> <el-radio-group v-model="dataForm.type"> <el-radio v-for="(type, index) in menuTypeList" :label="index" :key="index">{{ type }}</el-radio> </el-radio-group> </el-form-item> <el-form-item :label="menuTypeList[dataForm.type] + '名称'" prop="name"> <el-input v-model="dataForm.name" :placeholder="menuTypeList[dataForm.type] + '名称'"></el-input> </el-form-item> <el-form-item label="上级菜单" prop="parentName"> <popup-tree-input :data="popupTreeData" :props="popupTreeProps" :prop="dataForm.parentName==null?'根节点':dataForm.parentName" :nodeKey="''+dataForm.parentId" :currentChangeHandle="handleTreeSelectChange"> </popup-tree-input> </el-form-item> <el-form-item v-if="dataForm.type === 1" label="菜单路由" prop="url"> <el-input v-model="dataForm.url" placeholder="菜单路由"></el-input> </el-form-item> <el-form-item v-if="dataForm.type !== 0" label="授权标识" prop="perms"> <el-input v-model="dataForm.perms" placeholder="如: sys:user:add, sys:user:edit, sys:user:delete"></el-input> </el-form-item> <el-form-item v-if="dataForm.type !== 2" label="排序编号" prop="orderNum"> <el-input-number v-model="dataForm.orderNum" controls-position="right" :min="0" label="排序编号"></el-input-number> </el-form-item> <el-form-item v-if="dataForm.type !== 2" label="菜单图标" prop="icon"> <el-row> <el-col :span="22"> <!-- <el-popover ref="iconListPopover" placement="bottom-start" trigger="click" popper-class="mod-menu__icon-popover"> <div class="mod-menu__icon-list"> <el-button v-for="(item, index) in dataForm.iconList" :key="index" @click="iconActiveHandle(item)" :class="{ 'is-active': item === dataForm.icon }"> <icon-svg :name="item"></icon-svg> </el-button> </div> </el-popover> --> <el-input v-model="dataForm.icon" v-popover:iconListPopover :readonly="true" placeholder="菜单图标名称（如：fa fa-home fa-lg）" class="icon-list__input"></el-input> </el-col> <el-col :span="2" class="icon-list__tips"> <fa-icon-tooltip /> </el-col> </el-row> </el-form-item> </el-form> <span slot="footer" class="dialog-footer"> <el-button :size="size" @click="dialogVisible = false">取消</el-button> <el-button :size="size" type="primary" @click="submitForm()">确定</el-button> </span> </el-dialog> </div></template><script>import KtButton from "@/views/Core/KtButton"import TableTreeColumn from '@/views/Core/TableTreeColumn'import PopupTreeInput from "@/components/PopupTreeInput"import FaIconTooltip from "@/components/FaIconTooltip"export default { components:{ PopupTreeInput, KtButton, TableTreeColumn, FaIconTooltip }, data() { return { size: 'small', loading: false, filters: { name: '' }, tableTreeDdata: [], dialogVisible: false, menuTypeList: ['目录', '菜单', '按钮'], dataForm: { id: 0, type: 1, name: '', parentId: 0, parentName: '', url: '', perms: '', orderNum: 0, icon: '', iconList: [] }, dataRule: { name: [ { required: true, message: '菜单名称不能为空', trigger: 'blur' } ], parentName: [ { required: true, message: '上级菜单不能为空', trigger: 'change' } ] }, popupTreeData: [], popupTreeProps: { label: 'name', children: 'children' } } }, methods: { // 获取数据 findTreeData: function () { this.loading = true this.$api.menu.findMenuTree().then((res) => { this.tableTreeDdata = res.data this.popupTreeData = this.getParentMenuTree(res.data) this.loading = false }) }, // 获取上级菜单树 getParentMenuTree: function (tableTreeDdata) { let parent = { parentId: -1, name: '根节点', children: tableTreeDdata } return [parent] }, // 显示新增界面 handleAdd: function () { this.dialogVisible = true this.dataForm = { id: 0, type: 1, typeList: ['目录', '菜单', '按钮'], name: '', parentId: 0, parentName: '', url: '', perms: '', orderNum: 0, icon: '', iconList: [] } }, // 显示编辑界面 handleEdit: function (row) { this.dialogVisible = true Object.assign(this.dataForm, row); }, // 删除 handleDelete (row) { this.$confirm('确认删除选中记录吗？', '提示', { type: 'warning' }).then(() => { let params = this.getDeleteIds([], row) this.$api.menu.batchDelete(params).then( res => { this.findTreeData() this.$message({message: '删除成功', type: 'success'}) }) }) }, // 获取删除的包含子菜单的id列表 getDeleteIds (ids, row) { ids.push({id:row.id}) if(row.children != null) { for(let i=0, len=row.children.length; i<len; i++) { this.getDeleteIds(ids, row.children[i]) } } return ids }, // 菜单树选中 handleTreeSelectChange (data, node) { this.dataForm.parentId = data.id this.dataForm.parentName = data.name }, // 图标选中 iconActiveHandle (iconName) { this.dataForm.icon = iconName }, // 表单提交 submitForm () { this.$refs['dataForm'].validate((valid) => { if (valid) { this.$confirm('确认提交吗？', '提示', {}).then(() => { this.editLoading = true let params = Object.assign({}, this.dataForm) this.$api.menu.save(params).then((res) => { if(res.code == 200) { this.$message({ message: '操作成功', type: 'success' }) } else { this.$message({message: '操作失败, ' + res.msg, type: 'error'}) } this.editLoading = false this.$refs['dataForm'].resetFields() this.dialogVisible = false this.findTreeData() }) }) } }) } }, mounted() { this.findTreeData() }}</script><style scoped></style>其中对表格树组件进行了简单的封装。
views/Core/TableTreeColumn.vue
<template> <el-table-column :prop="prop" v-bind="$attrs"> <template slot-scope="scope"> <span @click.prevent="toggleHandle(scope.$index, scope.row)" :> <i :class="iconClasses(scope.row)" :></i> {{ scope.row[prop] }} </span> </template> </el-table-column></template><script> import isArray from 'lodash/isArray' export default { name: 'table-tree-column', props: { prop: { type: String }, treeKey: { type: String, default: 'id' }, parentKey: { type: String, default: 'parentId' }, levelKey: { type: String, default: 'level' }, childKey: { type: String, default: 'children' } }, methods: { childStyles (row) { return { 'padding-left': (row[this.levelKey] * 25) + 'px' } }, iconClasses (row) { return [ !row._expanded ? 'el-icon-caret-right' : 'el-icon-caret-bottom' ] }, iconStyles (row) { return { 'visibility': this.hasChild(row) ? 'visible' : 'hidden' } }, hasChild (row) { return (isArray(row[this.childKey]) && row[this.childKey].length >= 1) || false }, // 切换处理 toggleHandle (index, row) { if (this.hasChild(row)) { var data = this.$parent.store.states.data.slice(0) data[index]._expanded = !data[index]._expanded if (data[index]._expanded) { data = data.splice(0, index + 1).concat(row[this.childKey]).concat(data) } else { data = this.removeChildNode(data, row[this.treeKey]) } this.$parent.store.commit('setData', data) this.$nextTick(() => { this.$parent.doLayout() }) } }, // 移除子节点 removeChildNode (data, parentId) { var parentIds = isArray(parentId) ? parentId : [parentId] if (parentId.length <= 0) { return data } var ids = [] for (var i = 0; i < data.length; i++) { if (parentIds.indexOf(data[i][this.parentKey]) !== -1 && parentIds.indexOf(data[i][this.treeKey]) === -1) { ids.push(data.splice(i, 1)[0][this.treeKey]) i-- } } return this.removeChildNode(data, ids) } } }</script>测试效果
最终测试效果下图所示。
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