Duplicate insert when ajaxvalidation is true - yii

Question

Im having this weird problem that causes my model to double insert into the database when ajaxvalidation is on for my form. I dont understand why this happens, but this keeps on conflicting with my custom validation and I cannot move on. Can someone enlighten me on the problem.
Model:
public function rules()
{
// NOTE: you should only define rules for those attributes that
// will receive user inputs.
return array(
array('category, ppmp_id', 'numerical', 'integerOnly'=>true),
array('category','required'),
array('q1, q2, q3, q4', 'numerical'),
array('category', 'myTestUniqueMethod'),
// The following rule is used by search().
// Please remove those attributes that should not be searched.
array('item_id, category, q1, q2, q3, q4, ppmp_id', 'safe', 'on'=>'search'),
);
}
public function myTestUniqueMethod($attribute,$params)
{
$sql = 'SELECT *
FROM ppmp_item
WHERE ppmp_id='.$this->ppmp_id.'and category='.$this->category;
$unique = Yii::app()->db->createCommand($sql)->queryRow();
if ($unique)
{
$this->addError('category', "Category already added to PPMP");
}
}
View:
<?php $form=$this->beginWidget('CActiveForm', array(
'id'=>'ppmp-item-form',
'enableAjaxValidation'=>true,
)); ?>
<?php echo $form->errorSummary($model); ?>
<div class="row">
<?php echo $form->labelEx($model,'category'); ?>
<?php
$data=PhilgepsCategory::model()->findAll();
$data=CHtml::listData($data,'id','class_name');
echo $form->dropDownList($model,'category',$data,array('options' => array('1'=>array('selected'=>true))));
?>
<?php echo $form->error($model,'category'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'q1'); ?>
<?php echo $form->textField($model,'q1'); ?>
<?php echo $form->error($model,'q1'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'q2'); ?>
<?php echo $form->textField($model,'q2'); ?>
<?php echo $form->error($model,'q2'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'q3'); ?>
<?php echo $form->textField($model,'q3'); ?>
<?php echo $form->error($model,'q3'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'q4'); ?>
<?php echo $form->textField($model,'q4'); ?>
<?php echo $form->error($model,'q4'); ?>
</div>
<div class="row buttons">
<?php echo CHtml::submitButton($model->isNewRecord ? 'Create' : 'Save'); ?>
</div>
<?php $this->endWidget(); ?>
Controller:
public function actionCreate($ppmp,$bal)
{
$model=new PpmpItem;
// Uncomment the following line if AJAX validation is needed
// $this->performAjaxValidation($model);
if(isset($_POST['PpmpItem']))
{
$model->attributes=$_POST['PpmpItem'];
$model->ppmp_id = $ppmp;
$valid=$model->validate();
if($valid)
if($model->save())
$this->redirect(array('ppmp/view','id'=>$ppmp));
}
$this->render('create',array(
'model'=>$model,
'ppmp'=>$ppmp,
'bal'=>$bal,
));
}

Answer 1

The problem is that you shouldn't execute save() method when validating, because it will save when doing the ajax validation and when sending the data trough the form, so, you should do something like this:
...
...
if(isset($_POST['ajax']) && $_POST['ajax']==='ppmp-item-form')
{
echo CActiveForm::validate($model);
Yii::app()->end();
}
$valid=$model->validate();
if($valid)
if($model->save())
...
...
This is the same that gii uses to validate using ajax.