clay fix : 进入三级后,点击二级是无法显示,(路径问题)

src/views/content/index.vue

@@ -17,7 +17,6 @@
     <div style="background-color:#F8F8F8 ; padding-bottom: 19rem">
       <!--有三级菜单-->
       <el-row v-show="showSecond">
-
         <el-col v-if="$i18n.locale  === 'cn'" :xs="2" :sm="2" :md="1.5" :lg="2" :xl="4">
           <div class="grid-content"></div>
         </el-col>
@@ -202,6 +201,7 @@ export default {
   },
   watch: {
     $route(to, from) {
+      console.log("我被触发了")
       let arcId = this.$route.params && this.$route.query.id
       this.navId = this.$route.params && this.$route.params.navId;
       let id = this.$route.params && this.$route.params.secondId
@@ -220,6 +220,12 @@ export default {
           this.getContent(info.second)
         }
         return
+      }else {
+        console.log(this.navId,"this.navId")
+        if (undefined == this.navId ){
+          this.showIndex = 0
+          this.getNodes()
+        }
       }
       this.showSecond = true
       if (arcId != undefined) {
@@ -324,6 +330,7 @@ export default {
         if (arcId != undefined) {
           this.getContext(arcId)
         } else {
+          console.log("测试,我被触发了!")
           if (this.navId == undefined) {
             this.getContent(this.navList[0])
           } else {
@@ -359,6 +366,12 @@ export default {
       getNode(data).then(res => {
         console.log(res, "res值")
         console.log(this.type);
+        if (null == res.data){
+          this.contextData = null
+          console.log("将值设为null",this.contextData)
+          this.type = 0
+          return
+        }
         if (this.type === 2 || this.type === 4) {
           this.contextData = {
             data: res.rows,
@@ -374,6 +387,7 @@ export default {
           if (res.additional == ""){
             this.organizationType = "1"
           }else {
+            console.log(this.organizationType,"this.organizationType")
             this.organizationType = res.additional
           }
           this.contextData = handleTree(res.data, "id", "pid", null, null)