PDF download action

[c-gross]

I want create a screen with a table of orders and a checkbox for each order row.

Is it possible to make a command bar action that gets all selected ids?
Based on the selection I want to render a PDF (TCPDF) and return the PDF as an download. I can't find much about downloads in the docs. Attachment section is mainly about uploads. I don't know how to return the PDF in the right way, with mime type and such as direct download.

[c-gross]

I could make a link instead of a button action to point to a new route which can return the PDF download. This way the download is working but how can I get the selected fields (ids) to add the to the link URL? I guess it's not possible to add some JS to the Link Object. Guess I have to get custom js code somehow working to be added.

[c-gross]

Just added some Js inside my custom screen template since it's only a few lines. Works for now.
If there is a better way, would be nice to know.