yii2 updating tabular set of data is not working - yii2

Question

http://www.yiiframework.com/doc-2.0/guide-input-tabular-input.html#collecting-tabular-input
i worked based on the above link but my data is not updating to the database
my table structure is
setting
id , name, value
My controller SettingsController.php
<?php
namespace backend\controllers;
use Yii;
use yii\base\Model;
use yii\web\Controller;
use backend\models\Setting;
class SettingsController extends Controller
{
public function actionIndex()
{
$settings = Setting::find()->indexBy('id')->all();
if (Model::loadMultiple($settings, Yii::$app->request->post()) && Model::validateMultiple($settings)) {
foreach ($settings as $setting) {
$setting->save(false);
}
return $this->redirect('update');
}
return $this->render('update', ['settings' => $settings]);
}
}
my model is Setting.php
<?php
namespace backend\models;
use Yii;
class Setting extends \yii\db\ActiveRecord
{
public static function tableName()
{
return 'setting';
}
}
view is under settings -- update.php
<?php
use yii\helpers\Html;
use yii\widgets\ActiveForm;
$form = ActiveForm::begin();
foreach ($settings as $index => $setting) {
echo $form->field($setting, "[$index]value")->label($setting->name);
}
?>
<div class="form-group">
<?= Html::submitButton('Update', ['class' => 'btn btn-primary']) ?>
</div>
<?php
ActiveForm::end();
my problem is updated data is not saving.but i'm not getting any errors.

Answer 1

You don't have any rules or safe attribute in your Setting Model then the values of this model are not available..
try adding the list of save attribute in rule for your model..
public function rules()
{
return [
[['field1', 'field2',,,,'fieldn'], 'safe'],
];
}