<template>
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<el-breadcrumb class="app-breadcrumb" separator="/">
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<transition-group name="breadcrumb">
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<el-breadcrumb-item v-for="(item, index) in levelList" :key="item.path">
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<span v-if="item.redirect === 'noRedirect' || index == levelList.length - 1" class="no-redirect">{{ item.meta.title }}</span>
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<a v-else @click.prevent="handleLink(item)">{{ item.meta.title }}</a>
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</el-breadcrumb-item>
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</transition-group>
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</el-breadcrumb>
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</template>
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<script setup>
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import usePermissionStore from '@/store/modules/permission'
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const route = useRoute()
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const router = useRouter()
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const permissionStore = usePermissionStore()
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const levelList = ref([])
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function getBreadcrumb() {
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// only show routes with meta.title
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let matched = []
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const pathNum = findPathNum(route.path)
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// multi-level menu
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if (pathNum > 2) {
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const reg = /\/\w+/gi
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const pathList = route.path.match(reg).map((item, index) => {
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if (index !== 0) item = item.slice(1)
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return item
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})
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getMatched(pathList, permissionStore.defaultRoutes, matched)
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} else {
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matched = route.matched.filter((item) => item.meta && item.meta.title)
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}
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// 判断是否为首页
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if (!isDashboard(matched[0])) {
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matched = [{ path: "/index", meta: { title: "首页" } }].concat(matched)
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}
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levelList.value = matched.filter(item => item.meta && item.meta.title && item.meta.breadcrumb !== false)
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}
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function findPathNum(str, char = "/") {
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let index = str.indexOf(char)
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let num = 0
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while (index !== -1) {
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num++
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index = str.indexOf(char, index + 1)
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}
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return num
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}
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function getMatched(pathList, routeList, matched) {
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let data = routeList.find(item => item.path == pathList[0] || (item.name += '').toLowerCase() == pathList[0])
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if (data) {
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matched.push(data)
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if (data.children && pathList.length) {
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pathList.shift()
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getMatched(pathList, data.children, matched)
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}
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}
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}
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function isDashboard(route) {
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const name = route && route.name
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if (!name) {
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return false
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}
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return name.trim() === 'Index'
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}
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function handleLink(item) {
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const { redirect, path } = item
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if (redirect) {
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router.push(redirect)
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return
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}
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router.push(path)
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}
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watchEffect(() => {
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// if you go to the redirect page, do not update the breadcrumbs
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if (route.path.startsWith('/redirect/')) {
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return
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}
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getBreadcrumb()
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})
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getBreadcrumb()
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</script>
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<style lang='scss' scoped>
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.app-breadcrumb.el-breadcrumb {
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display: inline-block;
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font-size: 14px;
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line-height: 50px;
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margin-left: 8px;
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.no-redirect {
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color: #97a8be;
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cursor: text;
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}
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}
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</style>
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