Quote:
{formats} - A list of formats available in the calibre library for a book
|
You have to use
list_item(val, index, separator), i.e. something like {formats:list_item(index, ',')}.
But you can't loop over all formats per ebook. You must manually adjust index and the format to export and then rerun the save-to-device feature to consider all formats:
I think, it is easier to specify the folder name directly and enable only the corresponding format to be exported:
Enable only PDF to export, set root folder name to PDF, save to device
Enable only EPUB to export, set root folder name to EPUB, save to device
...