mPDF - 从另一个函数调用时不生成PDF [英] mPDF - No PDF generated when called from within another function

问题描述

我有一个mail_merge函数（使用cakephp），当直接从浏览器调用时。
domain.com/contacts/mail_merge将生成PDF并将其保存到数据库映射字段所需的服务器。

然而，当我尝试调用这个mail_merge函数从另一个函数。例如$ this-> mail_merge（$ cond，1）; PDF不会生成。数据库字段仍然来到mail_merge函数，所以这不是这个问题。任何想法为什么这可能发生？我已经更新了我的代码下面，现在包括一个简单的生成的txt文件与我想要放在PDF上的代码，这样工作，所以有一些关于mPDF的函数调用时不会生成PDF。 p>

感谢

我的mail_merge函数如下：

  //功能生成邮件合并 -  mPDF 
 // -------------------------- ------------------------------------> 
 function mail_merge（$ conditions = NULL，$ mail_merge_id = 1）
 {
 //删除标准布局
 // ------------ ------------------------------------------> 
 $ this-> layout = null; 
 
 //获取联系人
 // ------------------------------- ------------------------------> 
 $ contacts = $ this-> Contact-> Card-> find（'all'，array（
'limit'=> 10，
 //'fields' > $ fields，
'contains'=> array（'Contact'，'Prospect'，'SaleDetail'），
'conditions'=> $ conditions 
） 
 $ this-> set（'contacts'，$ contacts）; 
 
 // GE目录
 // ------------------------------- -----------------------------> 
 $ this-> loadModel（'MailMerge'）; 
 $ content = $ this-> MailMerge-> find（'first'，array（
'conditions'=> array（'MailMerge.id'=> $ mail_merge_id），
'fields'=> array（'MailMerge.description'）
））; 
 $ this-> set（'content'，$ content）; 
 
 //初始化mPDF 
 // -------------------------------- -------------------------------------------> 
 $ this-> Mpdf-> init（）; 
 
 //渲染视图并将其设置为写入HTML 
 // ---------------------- -------------------------------------------------- ---> 
 $ response = $ this-> render（'mail_merge'）; 
 $ thebody = $ response-> body（）; 
 $ this-> Mpdf-> WriteHTML（$ thebody）; 
 
 //设置输出的文件名pdf文件
 // ---------------------------- -----------------------------------------------> 
 $ thefilename =mail_merge _。date（d.m.Y_His）。。pdf; 
 $ this-> Mpdf-> setFilename（APP。WEBROOT_DIR。/ files / csv_exports /。$ thefilename）; 
 
 //将输出设置为I，D，F，S 
 // ------------------------ -------------------------------------------------- - > 
 $ this-> Mpdf-> setOutput（'F'）; 
 
 // TEMP  - 在服务器上创建TXT文件
 // -------------------------- ----------------------------------------------> 
 $ thefilenametxt =mail_merge _。date（d.m.Y_His）。。txt; 
 $ ourFileHandle = fopen（APP。WEBROOT_DIR。/ files / csv_exports /。$ thefilenametxt，'w'）; 
 fwrite（$ ourFileHandle，$ thebody）; 
 fclose（$ ourFileHandle）; 
 
 return $ thefilename; 
 
} // END MAIL MERGE 
  

解决方案

我发现组件的setOutput函数引起的问题。

当我改变时：

  $ this-> Mpdf-> setFilename（APP。WEBROOT_DIR。/ files / csv_exports /。 
 $ this-> Mpdf-> setOutput（'F'）; 
  

至

  $ this-> Mpdf-> Output（APP。WEBROOT_DIR。/ files / csv_exports /。$ thefilename，'F'）; 
  

它根据需要工作。

I have a mail_merge function (using cakephp) which when called directly from the browser e.g. domain.com/contacts/mail_merge will generate the PDF and save it to the server as needed with the database mapped fields.

When however I try to call this mail_merge function from another function. e.g. $this->mail_merge($cond, 1); The PDF won't generate. The database fields are still coming though to the mail_merge function so it's not this issue. Any idea why this might be happening? I have updated my code below to now include a simple generated txt file with the code I am trying to put onto the PDF and this works so there is simply something about mPDF that won't generate a PDF when called from a function.

Thanks

My mail_merge function is as follows:

// FUNCTION GENERATE MAIL MERGE - mPDF
// -------------------------------------------------------------->
function mail_merge($conditions=NULL, $mail_merge_id=1)
{
    // REMOVE THE STANDARD LAYOUT
    // ------------------------------------------------------>
    $this->layout = null;

    // GET THE CONTACTS
    // ------------------------------------------------------------->
    $contacts = $this->Contact->Card->find('all', array(
                                                  'limit' => 10, 
                                                  //'fields' => $fields,
                                                'contain' => array('Contact', 'Prospect', 'SaleDetail'),
                                                  'conditions' => $conditions
                                                  ));
    $this->set('contacts', $contacts);

    // GE THE CONTENTS
    // ------------------------------------------------------------>
    $this->loadModel('MailMerge');
    $content = $this->MailMerge->find('first', array(
                                                'conditions' => array('MailMerge.id' => $mail_merge_id),
                                                'fields' => array('MailMerge.description')
                                                ));
    $this->set('content', $content);

    // initializing mPDF
    // --------------------------------------------------------------------------->
    $this->Mpdf->init();

    // RENDER THE VIEW AND SET AS A VARIABLE TO WRITE THE HTML
    // --------------------------------------------------------------------------->
    $response = $this->render('mail_merge');
    $thebody = $response->body();
    $this->Mpdf->WriteHTML($thebody);

    // setting filename of output pdf file
    // --------------------------------------------------------------------------->
    $thefilename = "mail_merge_".date("d.m.Y_His").".pdf";
    $this->Mpdf->setFilename(APP. WEBROOT_DIR . "/files/csv_exports/" . $thefilename); 

    // setting output to I, D, F, S
    // --------------------------------------------------------------------------->
    $this->Mpdf->setOutput('F');

    // TEMP - CREATE TXT FILE ON THE SERVER
    // ------------------------------------------------------------------------>
    $thefilenametxt = "mail_merge_".date("d.m.Y_His").".txt";
    $ourFileHandle = fopen(APP. WEBROOT_DIR . "/files/csv_exports/" . $thefilenametxt, 'w');
    fwrite($ourFileHandle, $thebody); 
    fclose($ourFileHandle); 

    return $thefilename;

} // END MAIL MERGE

解决方案

I discovered the issue lied with the setOutput function of the component.

When I changed:

$this->Mpdf->setFilename(APP. WEBROOT_DIR . "/files/csv_exports/" . $thefilename); 
$this->Mpdf->setOutput('F');

To

$this->Mpdf->Output(APP. WEBROOT_DIR . "/files/csv_exports/" . $thefilename, 'F');

it worked as needed.

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