[chaley]

Originally Posted by Katja_hbg

Nice.
I added it yesterday and it works immediately.

But ... in some cases I buy books not in right order
e.g. I own series part #1 #3 #5
For book 3 the tooltip shows: book 3 of 3.

Could you please expand the example to show:
book 3 of 5 (some are missing) or
book 3 of 3 (highest number of the serie is 5)

Here is a template that does more than you asked. Change it as you wish.

program:
    def format(i):
        ii = floor(i);
        return if ii ==# i then ii else i fi
    fed;

    if $series then
        series_book_count = book_count('series:"""=' & $series & '"""', 0);
        indices = book_values('series_index', 'series:"""=' & $series & '"""', ',', 0);
        max_index = -999;
        min_index = 999999999999999;
        for i in indices:
            if i ># max_index then
                max_index = format(i)
            fi;
            if i <# min_index then
                min_index = format(i)
            fi
        rof;
        return f_string("Series: {$series}<br>" &
                         "Series index: {$series_index}<br>" &
                         "Lowest series index: {min_index}<br>" & 
                         "Highest series index: {max_index}<br>" & 
                         "Books in series: {series_book_count} ")
    fi;
    return 'This book is not in a series'