update src/utils/tree.ts.

tree.ts中的treeToString错误，修复

Signed-off-by: 口口口 <17975121@qq.com>

src/utils/tree.ts

@@ -374,15 +374,18 @@ export const treeToString = (tree: any[], nodeId) => {
     return node.name
   }
   let str = ''
+  let list = <any[]>[]
 
   function performAThoroughValidation(arr) {
     for (const item of arr) {
       if (item.id === nodeId) {
-        str += ` / ${item.name}`
+        list.push(item.name)
+        // str += ` / ${item.name}`
         return true
       } else if (typeof item.children !== 'undefined' && item.children.length !== 0) {
-        str += ` / ${item.name}`
+        // str += ` / ${item.name}`
         if (performAThoroughValidation(item.children)) {
+          list.push(item.name)
           return true
         }
       }
@@ -391,10 +394,16 @@ export const treeToString = (tree: any[], nodeId) => {
   }
 
   for (const item of tree) {
+    list = []
     str = `${item.name}`
     if (performAThoroughValidation(item.children)) {
       break
     }
   }
+  if (list.length > 0) {
+    list.reverse().forEach((name) => {
+      str += ` / ${name}`
+    })
+  }
   return str
 }