<template>
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<div v-if="!item.hidden" class="menu-wrapper">
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<template
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v-if="
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hasOneShowingChild(item.children, item) &&
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(!onlyOneChild.children || onlyOneChild.noShowingChildren) &&
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!item.alwaysShow
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"
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>
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<app-link v-if="onlyOneChild.meta" :to="resolvePath(onlyOneChild.path)">
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<el-menu-item
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:index="resolvePath(onlyOneChild.path)"
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:class="{ 'submenu-title-noDropdown': !isNest }"
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>
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<item
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:icon="onlyOneChild.meta.icon || (item.meta && item.meta.icon)"
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:title="onlyOneChild.meta.title"
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/>
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</el-menu-item>
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</app-link>
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</template>
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<!-- 如果当前item 有子节点 index唯一标识，popper-append-to-body是否将弹出菜单插入至body元素，在菜单定位出现问题时，可尝试修复该属性-->
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<el-submenu
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v-else
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ref="subMenu"
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:index="resolvePath(item.path)"
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popper-append-to-body
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>
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<template slot="title">
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<!-- item指的是router中index中的路由对象。 例如 item.meta.icon="Example" item.meta.title="监测因子展示" -->
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<item
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v-if="item.meta"
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:icon="item.meta && item.meta.icon"
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:title="item.meta.title"
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/>
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</template>
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<!-- 递归调用自身，直到item.children 不含子节点 自定义标签，vue文件名的驼峰标识-->
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<sidebar-item
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v-for="child in item.children"
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:key="child.path"
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:is-nest="true"
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:item="child"
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:base-path="resolvePath(child.path)"
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class="nest-menu"
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/>
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</el-submenu>
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</div>
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</template>
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<script>
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import path from 'path'
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import { isExternal } from '@/utils/validate'
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import Item from './Item'
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import AppLink from './Link'
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import FixiOSBug from './FixiOSBug'
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export default {
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name: 'SidebarItem',
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components: { Item, AppLink },
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mixins: [FixiOSBug],
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props: {
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// route object
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item: {
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type: Object,
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required: true
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},
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isNest: {
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type: Boolean,
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default: false
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},
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basePath: {
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type: String,
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default: ''
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}
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},
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data() {
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// To fix https://github.com/PanJiaChen/vue-admin-template/issues/237
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// TODO: refactor with render function
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this.onlyOneChild = null
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return {}
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},
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methods: {
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hasOneShowingChild(children = [], parent) {
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const showingChildren = children.filter(item => {
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if (item.hidden) {
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return false
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} else {
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// Temp set(will be used if only has one showing child)
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this.onlyOneChild = item
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return true
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}
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})
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// When there is only one child router, the child router is displayed by default
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if (showingChildren.length === 1) {
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return true
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}
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// Show parent if there are no child router to display
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if (showingChildren.length === 0) {
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this.onlyOneChild = { ...parent, path: '', noShowingChildren: true }
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return true
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}
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return false
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},
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resolvePath(routePath) {
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if (isExternal(routePath)) {
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return routePath
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}
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if (isExternal(this.basePath)) {
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return this.basePath
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}
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return path.resolve(this.basePath, routePath)
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}
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}
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}
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</script>
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