$tooltipTable
$tooltipTable : string
## Class TbExtendedTooltipAction
getDbConnection() : \CDbConnection
Returns the currently active database connection.
By default, the 'db' application component will be returned and activated. You can call {@link setDbConnection} to switch to a different database connection. Methods such as {@link insert}, {@link createTable} will use this database connection to perform DB queries.
the currently active database connection