Cgridview Filter With Multiple Models

Hello every1,

i don't know if some of you have met a problem, when they have a CGridView with Models, that have a HAS_MANY relationship and you need to select 1 of this MANY objects. I would like just to share my code, if someone will stuck in the same problem.

0. In my model i have declared an attribute 'contact':

class Customer extends CActiveRecord
{
	public $contact = '';

1. This is my GridView:

<?php
$this -> widget('bootstrap.widgets.TbGridView', array(
	'type' => 'striped bordered condensed',
	'dataProvider' => $model->search(),
	'filter'=> $model,
	'template' => "{items}{pager}",
	'rowCssClassExpression' => 'CustomerController::setRowColor($data->warningStatus)',
	'columns' => array(
			array(
					'name'=>'id',
					'htmlOptions' => array(
							'style' => 'width:100px;'
					)
			),
			'title',
			array(
					'name'=>'contact',
					'type'=>'raw',
			),
			'group_id',
			array(
					'class' => 'bootstrap.widgets.TbButtonColumn',
					'htmlOptions' => array('style' => 'width: 50px'),
			),
	),
));
?>

My model has a relation named Contacts(HAS_MANY) but i need only 1 Contact that is active right now and show its First name, Last Name and code it as a Link binded to E-Mail.

2. Model Search Function:

public function search()
{
	// Warning: Please modify the following code to remove attributes that
	// should not be searched.
	if(isset($_GET['Customer']['contact']))
		$this->contact = $_GET['Customer']['contact'];

	$criteria=new CDbCriteria;
	$criteria->compare('id',$this->id);
	$criteria->compare('title',$this->title,true);
	$customers = Customer::model()->findAll($criteria);

	foreach($customers as $key=>$customer) {
		$contact = Contact::model()->findByAttributes(array(),'customer_id='.$customer->id.' AND standard=1');
		if(empty($contact))
			$contact = Contact::model()->findByAttributes(array(),'customer_id='.$customer->id);
		if(!empty($contact)) {
			if(strlen($this->contact)==0 || strpos($contact->email,$this->contact)===0 ||
					strpos($contact->firstname,$this->contact)===0 ||
					strpos($contact->lastname,$this->contact)===0 ||
					($contact && strlen($this->contact)==0))
				$customer->contact = '<a href="mailto:'.$contact->email.'">'.$contact->firstname.' '.$contact->lastname.'</a>';
			else
				unset($customers[$key]);
		}
	}

	return new CActiveDataProvider($this, array(
			'data'=>$customers,
			'sort'=>array(
					'attributes'=>array(
							'contact'=>array(
									'asc'=>'contact',
									'desc'=>'contact DESC',
							),
							'*',
					),
			),
	));
}