どのようにsymfonyでCSVファイルのデータをエクスポートしますか？

開始：

 
public function executeRegistrantsToCsv(){ 

$id = $this->getRequestParameter('id'); 

$c = new Criteria(); 
$c->add(RegistrantPeer::EVENT_ID, $id); 
$c->add(RegistrantPeer::STATUS, 1); 
$this->aObjReg = RegistrantPeer::doSelect($c); 

$this->forward404Unless($this->aObjReg); 
$this->setlayout('csv'); 

$this->getResponse()->clearHttpHeaders(); 
$this->getResponse()->setHttpHeader('Content-Type', 'application/vnd.ms-excel'); 
$this->getResponse()->setHttpHeader('Content-Disposition', 'attachment; filename=registrants_report_event_' . $id . '.csv'); 

} 

テンプレートregistrannts ToCsv Success.php:

 
Title,Name,Email,Phone,Organisation,State,City,Country,Login Date,IpAddress 
<? foreach($aObjReg as $r): ?> 
<?= $r->getTitle() ?>,<?= $r->getName() ?>,<?= $r->getEmail() ?>,<?= $r->getPhone() ?>,<?= $r->getOrganisation() ?>,<?= $r->getState() ?>,<?= $r->getCity() ?>,<?= $r->getCountry() ?>,<?= $r->getLoginDate() ?>,<?= $r->getIpAddress() ?>, 
<? endforeach ?> 

in the templates/csv.php:<？php echo$sf_data->getRaw('sf_content->From:http://blog.baddog.net.au/sonius/steve-sonius/how-to-export-data-as-a-csv-file-in-symfony/ If it doesn't work，try this:http://blog.baddog.net.au/sonius/steve-sonius/how-to-export-data-as-an-xls-or-csv-file-from-the-admin-generator-in-symfony-1-4/