feature: [sidebar] add external-link (#991)

src/icons/svg/link.svg

+<?xml version="1.0" standalone="no"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg t="1534846208920" class="icon" style="" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="2941" xmlns:xlink="http://www.w3.org/1999/xlink" width="200" height="200"><defs><style type="text/css"></style></defs><path d="M912 1008.512H15.488V112h448.256v96H111.488v704.512H816V560.256h96z" p-id="2942"></path><path d="M918.208 37.888l67.904 67.904L545.984 545.92 478.08 478.08z" p-id="2943"></path><path d="M1007.168 310.656h-96V112h-208V16h304z" p-id="2944"></path></svg>
\ No newline at end of file

src/lang/en.js

@@ -60,7 +60,8 @@ export default {
     exportZip: 'Export Zip',
     theme: 'Theme',
     clipboardDemo: 'Clipboard',
-    i18n: 'I18n'
+    i18n: 'I18n',
+    externalLink: 'External Link'
   },
   navbar: {
     logOut: 'Log Out',

src/lang/zh.js

@@ -60,7 +60,8 @@ export default {
     exportZip: 'Export Zip',
     theme: '换肤',
     clipboardDemo: 'Clipboard',
-    i18n: '国际化'
+    i18n: '国际化',
+    externalLink: '外链'
   },
   navbar: {
     logOut: '退出登录',

src/router/index.js

@@ -322,5 +322,16 @@ export const asyncRouterMap = [
     ]
   },
 
+  {
+    path: 'external-link',
+    component: Layout,
+    children: [
+      {
+        path: 'https://github.com/PanJiaChen/vue-element-admin',
+        meta: { title: 'externalLink', icon: 'link' }
+      }
+    ]
+  },
+
   { path: '*', redirect: '/404', hidden: true }
 ]

src/views/layout/components/Sidebar/Item.vue

+<script>
+export default {
+  name: 'MenuItem',
+  functional: true,
+  props: {
+    icon: {
+      type: String,
+      default: ''
+    },
+    title: {
+      type: String,
+      default: ''
+    }
+  },
+  render(h, context) {
+    const { icon, title } = context.props
+    const vnodes = []
+
+    if (icon) {
+      vnodes.push(<svg-icon icon-class={icon}/>)
+    }
+
+    if (title) {
+      vnodes.push(<span slot='title'>{(title)}</span>)
+    }
+    return vnodes
+  }
+}
+</script>

src/views/layout/components/Sidebar/SidebarItem.vue

 <template>
   <div v-if="!item.hidden&&item.children" class="menu-wrapper">
 
-    <router-link v-if="hasOneShowingChild(item.children) && !onlyOneChild.children&&!item.alwaysShow" :to="resolvePath(onlyOneChild.path)">
-      <el-menu-item :index="resolvePath(onlyOneChild.path)" :class="{'submenu-title-noDropdown':!isNest}">
-        <svg-icon v-if="onlyOneChild.meta&&onlyOneChild.meta.icon" :icon-class="onlyOneChild.meta.icon"/>
-        <span v-if="onlyOneChild.meta&&onlyOneChild.meta.title" slot="title">{{ generateTitle(onlyOneChild.meta.title) }}</span>
-      </el-menu-item>
-    </router-link>
+    <template v-if="hasOneShowingChild(item.children) && !onlyOneChild.children&&!item.alwaysShow">
+      <a v-if="isExternalLink(onlyOneChild.path)" :href="onlyOneChild.path" target="blank">
+        apple
+        <el-menu-item :index="resolvePath(onlyOneChild.path)" :class="{'submenu-title-noDropdown':!isNest}">
+          <item v-if="onlyOneChild.meta" :icon="onlyOneChild.meta.icon" :title="generateTitle(onlyOneChild.meta.title)" />
+        </el-menu-item>
+      </a>
+      <router-link v-else :to="resolvePath(onlyOneChild.path)">
+        <el-menu-item :index="resolvePath(onlyOneChild.path)" :class="{'submenu-title-noDropdown':!isNest}">
+          <item v-if="onlyOneChild.meta" :icon="onlyOneChild.meta.icon" :title="generateTitle(onlyOneChild.meta.title)" />
+        </el-menu-item>
+      </router-link>
+    </template>
 
     <el-submenu v-else :index="item.name||item.path">
       <template slot="title">
-        <svg-icon v-if="item.meta&&item.meta.icon" :icon-class="item.meta.icon"/>
-        <span v-if="item.meta&&item.meta.title" slot="title">{{ generateTitle(item.meta.title) }}</span>
+        <item v-if="item.meta" :icon="item.meta.icon" :title="generateTitle(item.meta.title)" />
       </template>
 
       <template v-for="child in item.children" v-if="!child.hidden">
@@ -19,8 +25,7 @@
 
         <router-link v-else :to="resolvePath(child.path)" :key="child.name">
           <el-menu-item :index="resolvePath(child.path)">
-            <svg-icon v-if="child.meta&&child.meta.icon" :icon-class="child.meta.icon"/>
-            <span v-if="child.meta&&child.meta.title" slot="title">{{ generateTitle(child.meta.title) }}</span>
+            <item v-if="child.meta" :icon="child.meta.icon" :title="generateTitle(child.meta.title)" />
           </el-menu-item>
         </router-link>
       </template>
@@ -32,9 +37,12 @@
 <script>
 import path from 'path'
 import { generateTitle } from '@/utils/i18n'
+import { validateURL } from '@/utils/validate'
+import Item from './Item'
 
 export default {
   name: 'SidebarItem',
+  components: { Item },
   props: {
     // route object
     item: {
@@ -71,11 +79,13 @@ export default {
       }
       return false
     },
-    resolvePath(...paths) {
-      return path.resolve(this.basePath, ...paths)
+    resolvePath(routePath) {
+      return path.resolve(this.basePath, routePath)
+    },
+    isExternalLink(routePath) {
+      return validateURL(routePath)
     },
     generateTitle
   }
 }
 </script>
-