WikiaObject is an abstract class which the other classes of the Nirvana framework build upon. Any classes inheriting from WikiaObject have access to global variables via a WikiaGlobalRegistry in
$this->wg, and WikiaApp via
Wikia coding conventions dictate that WikiaObject be used for classes that are not controllers but still needs framework variables. The use of Nirvana/WikiaModel is recommended in cases where database access is needed.