trac-admin upgrade fails on first install

[Robert Corsaro]

Using r8856

Line 175 in db.py is:

!#python
        try:
            return int(valuelist[0])

and should be:

!#python
        try:
            if valuelist:
                return int(valuelist[0])
            return 0

or at least TypeError: 'NoneType' object is unsubscriptable should be caught.

19:28:17 Trac[env] INFO: tracwatchlist.db.WatchlistDataBase upgrading...
TypeError: 'NoneType' object is unsubscriptable
19:28:17 Trac[console] ERROR: Exception in trac-admin command: 
Traceback (most recent call last):
  File "/home/doki_pen/th-announcer/lib/python2.6/site-packages/trac/admin/console.py", line 107, in onecmd
    rv = cmd.Cmd.onecmd(self, line) or 0
  File "/usr/lib/python2.6/cmd.py", line 218, in onecmd
    return self.default(line)
  File "/home/doki_pen/th-announcer/lib/python2.6/site-packages/trac/admin/console.py", line 257, in default
    return cmd_mgr.execute_command(*args)
  File "/home/doki_pen/th-announcer/lib/python2.6/site-packages/trac/admin/api.py", line 123, in execute_command
    return f(*fargs)
  File "/home/doki_pen/th-announcer/lib/python2.6/site-packages/trac/env.py", line 790, in _do_upgrade
    self.env.upgrade(backup=no_backup is None)
  File "/home/doki_pen/th-announcer/lib/python2.6/site-packages/trac/env.py", line 533, in upgrade
    with_transaction(self)(participant.upgrade_environment)
  File "/home/doki_pen/th-announcer/lib/python2.6/site-packages/trac/db/api.py", line 77, in transaction_wrapper
    fn(ldb)
  File "/home/doki_pen/th-announcer/lib/python2.6/site-packages/tracwatchlist/db.py", line 110, in upgrade_environment
    old_version = self.get_version(db)
  File "/home/doki_pen/th-announcer/lib/python2.6/site-packages/tracwatchlist/db.py", line 176, in get_version
    return int(valuelist[0])
TypeError: 'NoneType' object is unsubscriptable

[Martin Scharrer]

Thanks for reporting this. It should be fixed in [8863]. Could you please verify this.

Please also note that the dev branch isn't fully stable at the moment. You might be required to reset all your watched resources and settings when the stable version is released. I actually have to put this on the WatchlistPlugin wiki page.

[Robert Corsaro]

Yeah, I'll check it out. No worries, about dev stream. It's my dev environment I'm working on.

[Robert Corsaro]

Working fine now.