YII: Value of variables not saving in the database - php

Question

I am new to YII. I know this question has been asked a lot of times before nut i can really find an answer. So, please take a look.
I am saving some data in the database from my PaypalController.php
Here is the code of PaypalController.
$transid = $paymentResult['TRANSACTIONID'];
$profileid = $recurringResult['PROFILEID'];
/*var_dump($transid);
var_dump($profileid);
exit;*/
$payment = new Payment;
$payment->user_id = 2;
$payment->feature = 'import sending servers';
$payment->transaction_id = $transid;
$payment->amount = 10;
$payment->profile_id = $profileid;
if($payment->save()){
//var_dump($recurringResult);exit;
//echo "<script>alert('Your payment is succesful');</script>";
$this->redirect('../email-hustler/index');
}else{
print_r($payment->getErrors());
exit;
}
And here is the code of my Payment model
public $user_id;
public $feature;
public $transaction_id;
public $amount;
public $profile_id;
public $is_active;
public function tableName()
{
return '{{payment}}';
}
public function rules()
{
$rules = array(
array('user_id, feature, transaction_id, amount, profile_id, is_active', 'safe'),
);
return CMap::mergeArray($rules, parent::rules());
}
public function attributeLabels(){
return array(
'user_id' => 'user_id',
'feature' => 'feature',
'transaction_id' => 'transaction_id',
'amount' => 'amount',
'profile_id' => 'profile_id',
'is_active' => 'is_active',
);
}
public static function model($className=__CLASS__)
{
return parent::model($className);
}
Now the problem is the value of the variables is not saving but the value i am passing static are saved.
var_dump of variables is giving me correct output.
Please help.