如何使用observables和primeng从父节点自动扩展所有子节点(配置为延迟加载)?
控制台输出
TypeError:无法读取未定义的属性“ count”
expandAll(event) {
this.nodeService.getChildren(event.node.object_sqn).subscribe((nodes) => {
event.node.children = nodes
});
console.log(event.node.children)
if (event.node.children.count > 0) {
event.node.expanded = true;
for (let cn of event.node.children) {
this.expandAll(cn);
}
}
}