/**
* For each root of the whole nested set tree structure, checks that their
* `lft` and `rgt` bounds are properly set.
*
* @return boolean
*/
protected function validateRoots()
{
$roots = forward_static_call(array(get_class($this->node), 'roots'))->get();
// If a scope is defined in the model we should check that the roots are
// valid *for each* value in the scope columns.
if ($this->node->isScoped()) {
return $this->validateRootsByScope($roots);
}
return $this->isEachRootValid($roots);
}
