how to initialize primeng tree component

Question

Given a tree how to initialize it in such way that the nodes are expanded at will?

I already tried to get a reference with @ViewChildren(Tree) tree

Answer 1

You can handle this with a function that put all the expanded attributes to true.

expandAll(toggle: boolean) {
  this.tree.map(node => {
    node.expanded = toggle;
  });
}

ngOnInit() {
  setTimeout(()=>{
    this.expandAll(true);
  }, 0);

}