2-1 SidebarItem
src/layout/components/Sidebar/SidebarItem.vue
主要是判断
<template>
<div
v-if="!item.meta || !item.meta.hidden"
class="sidebar-item-container"
>
<!-- 只渲染一个路由 并且路由只有一个子路由时直接渲染这个子路由 -->
<template
v-if="theOnlyOneChildRoute && (!theOnlyOneChildRoute.children || noShowingChildren)"
>
<sidebar-item-link
v-if="theOnlyOneChildRoute.meta"
:to="resolvePath(theOnlyOneChildRoute.path)"
>
<el-menu-item
:index="resolvePath(theOnlyOneChildRoute.path)"
>
<i v-if="icon && icon.includes('el-icon')" :class="icon"></i>
<svg-icon
v-else-if="icon"
class="menu-icon"
:icon-class="icon"
></svg-icon>
<template #title>
<span>{{ theOnlyOneChildRoute.meta.title }}</span>
</template>
</el-menu-item>
</sidebar-item-link>
</template>
<!-- 有多个子路由时 -->
<el-submenu
v-else
:index="resolvePath(item.path)"
popper-append-to-body
>
<template #title>
<i
v-if="item.meta && item.meta.icon.includes('el-icon')"
:class="icon"
></i>
<svg-icon
v-else-if="item.meta && item.meta.icon"
class="menu-icon"
:icon-class="item.meta.icon"
></svg-icon>
<span v-if="item.meta" class="submenu-title">{{ item.meta.title }}</span>
</template>
<template v-if="item.children">
<sidebar-item
v-for="child in item.children"
:key="child.path"
:is-nest="true"
:item="child"
:base-path="resolvePath(child.path)"
>
</sidebar-item>
</template>
</el-submenu>
</div>
</template>
<script lang="ts">
import path from 'path'
import { defineComponent, PropType, computed, toRefs } from 'vue'
import SidebarItemLink from './SidebarItemLink.vue'
import { isExternal } from '@/utils/validate'
import { MenuItemRouter } from '@/router/type'
export default defineComponent({
name: 'SidebarItem',
components: {
SidebarItemLink
},
props: {
item: {
type: Object as PropType<MenuItemRouter>,
required: true
},
basePath: {
type: String,
required: true
}
},
setup (props) {
const { item } = toRefs(props)
// 子路由数量
const showingChildNumber = computed(() => {
const children = (props.item.children || []).filter(child => {
// hidden属性控制路由是否渲染成菜单 像login 401 404等路由都不需要渲染成菜案
if (child.meta && child.meta.hidden) return false
return true
})
return children.length
})
// 只有一个可渲染的子路由直接渲染这个子路由 (由于我们有的路由 layout布局组件是一级路由 二级路由才是我们要渲染成菜单)
const theOnlyOneChildRoute = computed(() => {
// 多个children
if (showingChildNumber.value > 1) {
return null
}
// 子路由只有一个时 并且做个hidden筛选
if (item.value.children) {
for (const child of item.value.children) {
// hidden属性控制路由是否渲染成菜单 像login 401 404等路由都不需要渲染成菜单
if (!child.meta || !child.meta.hidden) {
return child
}
}
}
// showingChildNumber === 0
// 没有可渲染chiildren时 就渲染当前父路由item
return {
...props.item,
path: '' // resolvePath避免resolve拼接时 拼接重复
}
})
// 是否有可渲染子路由
const noShowingChildren = computed(() => showingChildNumber.value === 0)
// menu icon
const icon = computed(() => {
// 子路由 如果没有icon就用父路由的
return (theOnlyOneChildRoute.value?.meta?.icon || (props.item.meta && props.item.meta.icon)) as string
})
// 拼接路径 父路径+子路径(相对路径)
const resolvePath = (childPath: string) => {
// 如果是带协议外链 直接返回
if (isExternal(childPath)) {
return childPath
}
// 如果不是外链 需要和basePath拼接
return path.resolve(props.basePath, childPath)
}
return {
theOnlyOneChildRoute,
icon,
resolvePath,
noShowingChildren
}
}
})
</script>
<style lang="scss">
.sidebar-item-container {
.menu-icon {
margin-right: 16px;
margin-left: 5px;
vertical-align: middle;
}
}
</style>
2-2 路由meta对象类型处理
在router目录下typings.d.ts 针对 RouteMeta进行类型补充
RouteMeta类型说明
src/router/typings.d.ts
import 'vue-router'
declare module 'vue-router' {
interface RouteMeta {
title?: string; // 路由菜单title
icon?: string; // 路由菜单icon
hidden?: boolean; // 菜单栏不显示
// 路由是否缓存 没有这个属性或false都会缓存 true不缓存
noCache?: boolean;
activeMenu?: string; // 指定菜单激活
breadcrumb?: boolean; // 该路由是否显示面包屑
affix?: boolean; // 固定显示在tagsView中
alwaysShow?: boolean; // 菜单是否一直显示根路由
}
}
SidebarItem中router meta正常使用
src/layout/components/Sidebar/SidebarItem.vue
icon断言为string
src/layout/components/Sidebar/SidebarItem.vue
本节参考源码
https://gitee.com/brolly/vue3-element-admin/commit/c33c22e68fd1bffbf29e469d81a9e635ec00fdf7