Async load is duplicated after updating tree model

Hi there, so my tree has async config with getChildren with promise and every time I update the tree model by creating a new array this.nodes = [newNode, ...this.nodes]; or this.tree.treeModel.update(). The async now is call twice and make 2 api requests with same URL when click to expand the nodes. If I update the tree model again it will increase the async call to 3. My code base on:

• Tree component version 7
• Angular 4

[sergeo2]

I found the same issue, using Angular 5, and tree component version 7.0.1. After some investigation - looks like VirtualRoot stay alive after new nodes re-render. Only fix i able to do right now - check if virtual root is correct on getChildren call:

@ViewChild("tree") public tree: TreeComponent

getChildren(node: ITreeNode): any {
    if (node.isDescendantOf(this.tree.treeModel.virtualRoot)) { 
      //DO async call to retrieve children
    }
 }

That is only dirty workaround to prevent duplicated calls to API, but doesn’t actually fix initial issue. Any tries to kill virtualroot or clean up data before prior was unsuccessful. So would be nice to see any valid Solution.

[tobiasengelhardt]

Closing this issue due to inactivity. Please open a new issue if the problem still exists.