Quote:
Originally Posted by treadlightly
A while ago I had asked in the plugin idea thread if there was a quick way to show the sum of all the entries in a numerical column. It could be on request, i.e. press a button or hover over the column title, instead of a real-time updated total. I know I can export to CSV but this takes time. It would be nice to see total $ spent on ebooks or total pages read on the fly. Is there any possibility of this ever being implemented? Thanks.
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Not much of one unless someone makes a plugin to do it. The problem is that functions like that require access to all books, not just the current one. The template system is limited to one book at a time.
It is of course possible to do this sort of thing in plugins and in python "calibre helper scripts" (calibre-debug -e script.py), but neither of these are useful for someone who isn't already a python programmer.