[PS 1.7.8] Show PDFs online instead of to download

[Unplowed]

Hello,

In back office, when you want to view an invoice/delivery slip/... you need to download it.

There is a way to show it online instead of to download it ? 

I've tried this solution (for PS 1.6) but it doesn't work, obviously.

Thanks for help.

[foxnetwork]

did you ever find a solution for this

[Sashok]

for PDF I changed in 

/controllers/front/AttachmentController.php

 

header('Content-Disposition: attachment; filename="' . utf8_decode($attachment->file_name) . '"');

to:

header('Content-Disposition: inline; filename="' . utf8_decode($attachment->file_name) . '"');