/**
* Updates an existing Ad model.
* If update is successful, the browser will be redirected to the 'view' page.
* @param string $id
* @return mixed
*/
public function actionUpdate($id)
{
$model = $this->findModel($id);
$oldimg = $model->img;
if ($model->load(Yii::$app->request->post())) {
$img = UploadedFile::getInstance($model, 'img');
if ($img) {
$file = 'upload/' . time() . mt_rand(1, 999) . '.' . $img->extension;
$img->saveAs($file);
$model->img = $file;
} else {
$model->img = $oldimg;
}
if ($model->save()) {
return $this->redirect(['view', 'id' => $model->id]);
}
} else {
$adverlist = Adver::getDropList();
return $this->render('update', ['model' => $model, 'adverlist' => $adverlist]);
}
}
