While getting parent of node: if it is new and unsaved node - parent ...

[bethrezen]

While getting parent of node: if it is new and unsaved node - parent can't be retrieven, because we don't have rgt and lft

[cebe]

shouldn't we throw an exception to complain about the unsaved record instead of returning null? Didn't check that in detail but when parent is null I'd interpret it as if it's a root node.

[bethrezen]

Maybe you are right

[creocoder]

Wontfix. It can be useful in next scenario:

$model=new Category;
$model->lft=2;
$model->rgt=7;
$model->parent()->find();

like native feature of framework:

$model=new Foo;
$model->bar_id=1;
$model->bar; // returns bar relation