Yii Novice question, $model->save () failed

public function actionTestApply()    {        if (!Yii::app()->user->isGuest) {            $model = Apply::model()->findByPk($_POST['product_id']);            if (isset($_POST['LEMONCMS_CSRF_TOKEN'])) {                $model->test_text = $_POST['test_text'];                $model->img = $_POST['img'];                if ($model->save()) {                    $this->redirect(array('user/apply'));                }            }        } else {            $this->render("error");        }    }

Can print out $model->test_text $model->img

public function rules()    {        // NOTE: you should only define rules for those attributes that        // will receive user inputs.        return array(            array('user_id, product_id', 'required'),            array('user_id, product_id', 'numerical', 'integerOnly'=>true),            array('insert_time', 'safe'),            // The following rule is used by search().            // @todo Please remove those attributes that should not be searched.            array('id, user_id, insert_time, product_id', 'safe', 'on'=>'search'),        );    }

This is the database
It was written by someone else.

Reply content:

public function actionTestApply()    {        if (!Yii::app()->user->isGuest) {            $model = Apply::model()->findByPk($_POST['product_id']);            if (isset($_POST['LEMONCMS_CSRF_TOKEN'])) {                $model->test_text = $_POST['test_text'];                $model->img = $_POST['img'];                if ($model->save()) {                    $this->redirect(array('user/apply'));                }            }        } else {            $this->render("error");        }    }

Can print out $model->test_text $model->img

public function rules()    {        // NOTE: you should only define rules for those attributes that        // will receive user inputs.        return array(            array('user_id, product_id', 'required'),            array('user_id, product_id', 'numerical', 'integerOnly'=>true),            array('insert_time', 'safe'),            // The following rule is used by search().            // @todo Please remove those attributes that should not be searched.            array('id, user_id, insert_time, product_id', 'safe', 'on'=>'search'),        );    }

This is the database
It was written by someone else.

phpif ($model->save()) {                    $this->redirect(array('user/apply'));                }

This paragraph I used to write

phpif (!$model->save()) {    dump($model->errors);}$this->redirect(['user/apply']);

So if it doesn't work, save it prints out the wrong thing.

