I am attempting to provide a report to an outside accounting with approved expense reports with the image resolved in a PDF by using QWEB. When I try to access the field (line.message_main_attachment_id.website_url) using the t-field method - it shows the URL, but I need to prepend the application name - how do you do concatenation in QWEB or does someone have a more efficient way to achieve this - perhaps gettting the binary image from the filesystem?

Thank you in advance

Ed