技術標籤：vue 後臺元件

目錄

• • vue 之麵包屑元件
  • • breadCrumb/BreadCrumb.vue
    • breadCrumb/index.js
    • mian.js
    • 使用元件
    • 路由的配置

vue 之麵包屑元件

breadCrumb/BreadCrumb.vue

• npm i path-to-regexp
• path-to-regexp的使用教程可訪問 連結: link.

<template>
  <el-breadcrumb class="app-breadcrumb" separator="/">
    <transition-
 
group name="breadcrumb">
      <el-breadcrumb-item v-for="(item,index) in levelList" :key="item.path">
        <span v-if="item.redirect==='noRedirect'||index==levelList.length-1" class="no-redirect">{{ item.meta.title }}</span>
        <
 
a v-else @click.prevent="handleLink(item)">{{ item.meta.title }}</a>
      </el-breadcrumb-item>
    </transition-group>
  </el-breadcrumb>
</template>

<script>
import pathToRegexp from 'path-to-regexp'

export default {
  data() {
    return {
      levelList:
 
 null
    }
  },
  watch: {
    $route() {
      this.getBreadcrumb()
    }
  },
  created() {
    this.getBreadcrumb()
  },
  methods: {
  //獲取當前的 麵包屑 前提是 每一個路由裡面中的meta新增title
    getBreadcrumb() {
      // only show routes with meta.title
      let matched = this.$route.matched.filter(item => item.meta && item.meta.title)
      const first = matched[0]

		// 判斷最初固定的 面板 一般來說是home等！
      if (!this.isDashboard(first)) {
        matched = [{ path: '/dashboard', meta: { title: 'Dashboard' }}].concat(matched)
      }

      this.levelList = matched.filter(item => item.meta && item.meta.title && item.meta.breadcrumb !== false)
    },
    isDashboard(route) {
      const name = route && route.name
      if (!name) {
        return false
      }
      return name.trim().toLocaleLowerCase() === 'Dashboard'.toLocaleLowerCase()
    },
    pathCompile(path) {
      // To solve this problem https://github.com/PanJiaChen/vue-element-admin/issues/561
      const { params } = this.$route
      var toPath = pathToRegexp.compile(path)
      return toPath(params)
    },
    handleLink(item) {
      const { redirect, path } = item
      if (redirect) {
        this.$router.push(redirect)
        return
      }
      this.$router.push(this.pathCompile(path))
    }
  }
}
</script>

<style lang="scss" scoped>
.app-breadcrumb.el-breadcrumb {
  display: inline-block;
  font-size: 14px;
  line-height: 50px;
  margin-left: 8px;

  .no-redirect {
    color: #97a8be;
    cursor: text;
  }
}
</style>

breadCrumb/index.js

/**
 * 是否粘性定位 元件
 */
import BreadCrumb from "./BreadCrumb.vue";
BreadCrumb.install = function(vue) {
  vue.component(BreadCrumb.name, BreadCrumb);
};
export default BreadCrumb;

mian.js

//引入 自定義元件
import BreadCrumb from '@/components/commom/breadCrumb/index.js'
Vue.use(BreadCrumb)

使用元件

<BreadCrumb />

路由的配置

export const constantRoutes = [
  {
    path: '/',
    component: Layout,
    redirect: '/dashboard',
    children: [{
      path: 'dashboard',
      name: 'Dashboard',
      component: () => import('@/views/dashboard/index'),
      meta: { title: 'Dashboard', icon: 'dashboard' }
    }]
  },

  {
    path: '/example',
    component: Layout,
    redirect: '/example/table',
    name: 'Example',
    meta: { title: 'Example', icon: 'el-icon-s-help' },
    children: [
      {
        path: 'table',
        name: 'Table',
        component: () => import('@/views/table/index'),
        meta: { title: 'Table', icon: 'table' }
      },
      {
        path: 'tree',
        name: 'Tree',
        component: () => import('@/views/tree/index'),
        meta: { title: 'Tree', icon: 'tree' }
      }
    ]
  },
]