public static function getLogDifference(Eloquent $model, Eloquent $oldModel) {
		$attributes = $model->attributesToArray();
		$modelAttributes = $oldModel->attributesToArray();

		$diff = array();

		// Determine what values are not the same
		foreach ($attributes as $key => $value) :
			$other = $modelAttributes[$key];

			if ($value !== $other) :
				$diff[] = $key;
			endif;
		endforeach;

		return $diff;
	}