Truncate titles and author names in carousels

[Lance Arthur]

See: http://upstream.openlibrary.org/subjects/Frozen_fish

When covers are not available, title and author names are sometimes too long to easily fit on the blank covers. The carousel script needs to be altered to include the truncate macro for both titles and authors (70-character limit is standard)

[George (george-archive)]

70 chars for that amount of space might still be too large. How about 20 for each? Or 30?

We should show the full title and full author in the alt/title so you can read it all if you mouseover.

[Edward Betts (edwardbetts)]

Web.py templates use the same syntax as Python for addressing substrings. To truncate a title to 30 characters write it like this:

page.title[:30]

Or maybe you want to get fancy and add a '…' to the end of truncated strings:

def truncate(s, len):
    if len(s) < len:
        return s
    return s[:len] + "&hellip;"

truncate(page.title, 30)

[Anand Chitipothu (anandology)]

That is rendered in javascript.
Fixed by adding truncate function to http://upstream.openlibrary.org/js/utils.js and using it in http://upstream.openlibrary.org/templates/lib/covers.tmpl

[Anand Chitipothu (anandology)]

forgot to mention, using 40-character limit for truncation.