feature[Sidebar]: add activeMenu option (#1833)

src/layout/components/Sidebar/index.vue

@@ -3,7 +3,7 @@
     <logo v-if="showLogo" :collapse="isCollapse" />
     <el-scrollbar wrap-class="scrollbar-wrapper">
       <el-menu
-        :default-active="$route.path"
+        :default-active="activeMenu"
         :collapse="isCollapse"
         :background-color="variables.menuBg"
         :text-color="variables.menuText"
@@ -30,6 +30,15 @@ export default {
       'permission_routes',
       'sidebar'
     ]),
+    activeMenu() {
+      const route = this.$route
+      const { meta, path } = route
+      // if set path, the sidebar will highlight the path you set
+      if (meta.activeMenu) {
+        return meta.activeMenu
+      }
+      return path
+    },
     showLogo() {
       return this.$store.state.settings.sidebarLogo
     },