使用Yii2更新图像时,我面临验证问题.它总是要求我上传图像.但我不想要这个.始终无需更新图像.

我试过skIPOnEmpty,但它不能正常工作,它会在上传照片时产生效果,这也是不正确的.

请帮忙！！

模型

public function rules()
    {
        return [
            [['carid','name'],'required'],[['carid','coverphoto','status'],'integer'],[['name'],'string','max' => 200],[['imageFiles'],'image','extensions' => 'png,jpg,jPEg,gif','maxFiles' => 4,'minWidth' => 100,'maxWidth' => 800,'minHeight' => 100,'maxHeight'=>600,'skipOnEmpty' => true],];
    }

调节器

public function actionUpdate($id)
    {
        $model = $this->findModel($id);

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(['view','id' => $model->photoid]);
        } else {
            return $this->render('update',[
                'model' => $model,]);
        }
    }

[['imageFiles'],'skipOnEmpty' => true,'on' => 'update-photo-upload'],

public function actionUpdate($id)
{
    $model = $this->findModel($id);
    $model->scenario = 'update-photo-upload';
    ........
    .....
}