prestashop display attachment inline - php

Question

I'm creating a custom PDF file containing some product details. I would like to display product attachments that are images. I have changed the attachment controller to
header('Content-Disposition: inline; filename="'.utf8_decode($a->file_name).'"');
When I visit the url through the browser it displays nicely:
http://domain.nl/nl/index.php?controller=attachment&id_attachment=483
But using this url inside an img tag in my PDF template gives:
TCPDF ERROR: [Image] Unable to get image: http://domain.nl/nl/index.php?controller=attachment&id_attachment=483
Does anyone have any idea on how to make this work?

Answer 1

I created a new file next to AttachmentController.php called AttachmentInlineController.php. Contents are slightly different:
<?php
class AttachmentInlineControllerCore extends FrontController
{
public function __construct()
{
$a = new Attachment(Tools::getValue('id_attachment'), $this->context->language->id);
if (!$a->id) {
Tools::redirect('index.php');
}
if (ob_get_level() && ob_get_length() > 0) {
ob_end_clean();
}
header('Content-Transfer-Encoding: binary');
header('Content-Type: '.$a->mime);
header('Content-Length: '.filesize(_PS_DOWNLOAD_DIR_.$a->file));
header('Content-Disposition: inline; filename="'.utf8_decode($a->file_name).'"');
#set_time_limit(0);
readfile(_PS_DOWNLOAD_DIR_.$a->file);
exit;
}
}?>
I removed the hook, changed content-Disposition to inline, and changed the function from postProcess() to __construct. Now if you use:
http://domain.nl/nl/index.php?controller=attachmentInline&id_attachment=483
It will display that attachment inline, and you can use this url in image tags etc.