protected function update($connection = null)
{
// Update nested set keys only if parent id has changed
if (isset($this->values['parentId'])) {
// Get the "original" parentId before any updates
$offset = 0;
$originalParentId = null;
foreach ($this->tables as $table) {
foreach ($table->getColumns() as $column) {
if ('parentId' == $column->getPhpName()) {
$originalParentId = $this->row[$offset];
break;
}
$offset++;
}
}
// If updated value of parentId is different then original value,
// update the nested set
if ($originalParentId != $this->values['parentId']) {
$this->updateNestedSet($connection);
}
}
parent::update($connection);
return $this;
}
