/**
* Verifies no duplicate aliases within a secton's categories listing.
* Returns true if duplicate detected.
*
* @param integer $id the id of the category object
*
* @return boolean
*/
public function uniqueAliasCheck($id = null)
{
$alias = $this->get('alias');
$section = new Section($this->get('section_id'));
// all categories within a section
$categories = $section->categories('list');
// check for duplicate aliases within the same section;
foreach ($categories as $category) {
$existing = $category->get('alias');
if ($alias == $existing && $category->get('id') != $id) {
$this->setError(Lang::txt('The alias must be unique within a section.'));
return true;
} else {
continue;
}
}
return false;
}