Symfony：强制下载生成的文件

Question

我遇到了生成文件的问题。这里是我的行动：

<?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; 
} 

我的文件下载，但它的内容有开头：

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

有谁知道为什么吗？

Answer 1

我不使用响应作为生成的文件下载的回报。

我只需填写然后一个变量它显示如下：

$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; 

我知道这是不是绝对的物体侧的代码，但它完全适用于产生集成电路的千我们项目的一个内日常的文件

Answer 2

我终于找到了解决方案。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; 
}