Symfony：強制下載生成的文件

Question

我遇到了生成文件的問題。這裏是我的行動：

<?php 
public function exportAction() 
{ 
    $this->checkSecurity('EDIT'); 

    $config = $this->getConfiguration(); 
    $resource = $this->findOr404(); 

    $style = $this->render($config->getTemplate('export.css'), array(
     'resource' => $resource 
    )); 

    $response = new Response(); 
    $response->headers->set('Cache-Control', 'private'); 
    $response->headers->set('Content-type', 'plain/text'); 
    $response->headers->set('Content-type', 'application/octet-stream'); 
    $response->headers->set('Content-Disposition', 'attachment; filename="style-' . $resource->getSlug() . '.css";'); 
    $response->sendHeaders(); 
    $response->setContent($style); 

    return $response; 
} 

我的文件下載，但它的內容有開頭：

HTTP/1.0 200 OK 
Cache-Control: no-cache 
Date:   Tue, 02 Sep 2014 09:16:34 GMT 

有誰知道爲什麼嗎？

Answer 1

我不使用響應作爲生成的文件下載的回報。

我只需填寫然後一個變量它顯示如下：

$style = $this->render($config->getTemplate('export.css'), array(
    'resource' => $resource 
)); 


    header("Content-Type: text/calendar; filename='style-" . $resource->getSlug() . ".css'"); 
    header('Content-Length: '.strlen($style); 
    header("Content-Transfer-Encoding: binary"); 
    header("Content-Disposition: inline; filename='style-" . $resource->getSlug() . ".css'"); 
    header("Expires: 0"); 
    header("Cache-Control: no-cache, must-revalidate"); 
    header("Pragma: no-cache"); 

echo $style; 
exit; 

我知道這是不是絕對的物體側的代碼，但它完全適用於產生集成電路的千我們項目的一個內日常的文件

Answer 2

我終於找到了解決方案。我忘了的getContent（）上渲染

<?php 
public function exportAction() 
{ 
    $this->checkSecurity('EDIT'); 

    $config = $this->getConfiguration(); 
    $resource = $this->findOr404(); 

    $style = $this->render($config->getTemplate('export.css'), array(
     'resource' => $resource 
    )); 

    $response = new Response(); 
    $response->headers->set('Cache-Control', 'private'); 
    $response->headers->set('Content-type', 'plain/text'); 
    $response->headers->set('Content-type', 'application/octet-stream'); 
    $response->headers->set('Content-Disposition', 'attachment; filename="style-' . $resource->getSlug() . '.css";'); 
    $response->sendHeaders(); 
    $response->setContent($style->getContent()); 

    return $response; 
}