Yii2 save Log into Database - yii2

Question

i have some problem with Log with Yii2.
I set Log Targets in this way:
'log' => [
'traceLevel' => YII_DEBUG ? 3 : 0,
'flushInterval' => 1,//test
'targets' => [
[
'class' => 'common\components\SaDbTarget',
'levels' => ['error', 'warning','trace','info'],
'exportInterval' => 1,//test
//'categories' => ['application'],
/*'except' => [
'yii\db\*',
],*/
],
],
],
I create my SaDbTarget extending DbTarget Class, and this is working fine because i found in my table some log.
After that, in a controller i tried to set a log like this way
public function actionIndex(){
$searchModel = new CategorySearch();
$dataProvider = $searchModel->search(Yii::$app->request->queryParams);
Yii::trace('trace log', __METHOD__);
Yii::warning('warning log');
// here is the rest of the code
}
I can see this 2 logs into the debug toolbar, but not in my db table.
According to the Docs
To make each log message appear immediately in the log targets, you
should set both flushInterval and exportInterval to be 1
I tried to set this values but still doesn't work.
I don't know what am I doing wrong.
UPDATE
This is my SaDbTarget
namespace common\components;
use Yii;
use yii\log\DbTarget;
use yii\log\Logger;
class SaDbTarget extends DbTarget{
//set custom table db for saving log
public $logTable = 'authlog';
//overwrite export();
public function export(){
$tableName = $this->db->quoteTableName($this->logTable);
$sql = "INSERT INTO $tableName ([[authlog_login]], [[authlog_ip]], [[authlog_area]], [[authlog_act]], [[authlog_time]], [[authlog_data]])
VALUES (:login, :ip, :area, :act, :time, :data )";
$command = $this->db->createCommand($sql);
//Get username
$user=Yii::$app->user->getId();
//Get user ip address
$ip = Yii::$app->request->getUserIP();
//Get area/controller
$controller=Yii::$app->controller->uniqueId;
//Get action
$event= Yii::$app->controller->module->requestedAction->id;
//Set timezone
$time = Yii::$app->formatter->asDate('now', 'php:Y-m-d H:i:s');
//Set Data
$data = $this->messages[0];
$command->bindValues([
':login' => $user,
':ip' => $ip,
':area' => $controller,
':act' => $event,
':time' => $time,
':data' => $data,
])->execute();
}

Answer 1

Could you check wether the 'log' component is set on bootstrap?
I think this could be the issue that the dispatcher is not setup and does not pickup the target.
So the bootstrap should look like
[
'bootstrap' => ['log'],
'components' => [
'log' => [
...
],
....
]
Another way would be to check in the debugger if the dispatcher on the logger is configured correctly.