<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 lang="ts">
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import { RouteLocationMatched } from 'vue-router';
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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<RouteLocationMatched[]>([]);
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const 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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const 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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const 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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const isDashboard = (route: RouteLocationMatched) => {
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const name = route && (route.name as string);
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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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const handleLink = (item) => {
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const { redirect, path } = item;
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redirect ? router.push(redirect) : 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/')) return;
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getBreadcrumb();
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});
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onMounted(() => {
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getBreadcrumb();
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});
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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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