[{ "title":"test1", "description":"test1", "date":"17.01.12 11:11:11" }, {"title":"test2", "description":"test2", "date":"17.01.12 22:22:22" }]
$data = json_decode(\Yii::$app->request->post('arr'), true);
foreach ($data as $chunk) {
$model = new Model();
$model->attributes = $chunk;
$model->save();
}
if (!$model->save()) {
var_dump(['erorrs' => $model->errors]);
}