修改模型数据多次调用的bug

src/views/formula/edit1.vue

@@ -730,6 +730,11 @@ export default {
         // 开启 “加载中” 动画
         if(node.level == 0) this.loading = true
         if(!this.elementType) {
+          if (node.level != 0 && !node.data.hasChildren) {
+            this.loading = false
+            resolve(null)
+            return
+          }
          tabTypeLazyTreeAll({parentId,current:1,size:1000,hasPartFormula:this.fromcurNode.hasPartFormula}).then(res => {
             // 请求接口，返回数据
             let data = res.data.data.records;