id,summary,reporter,owner,description,type,status,priority,component,severity,resolution,keywords,cc,release
10194,Cannot update a ticket using trac.ticket.model.save_changes with both a 'comment' and a 'when' field.,farialima,rjollos,"This was found in the TicketImportPlugin, see #10188, and took me some time to debug. The following piece of code (given an `env` environment):

{{{
#!python
from trac.ticket.web_ui import Ticket 
from datetime import datetime 
from trac.util.datefmt import utc 
ticket = Ticket(env) 
ticket['summary'] = 'The summary' 
ticket.insert() 
ticket['blockedby'] = str(ticket.id) 
ticket.save_changes('someone', comment='Some comments',
                    when=datetime.now(utc)) 
}}}

will work if the MasterTicketsPlugin is not installed, but will fail if it is installed, with the following error:
{{{
ticket.save_changes('someone', 'Some comments',
                    when=datetime.now(utc))
  File ""/Users/francois/ticketimportplugin/0.11/env2.5/lib/python2.5/site-packages/Trac-0.12-py2.5.egg/trac/ticket/model.py"", line 353, in save_changes
    listener.ticket_changed(self, comment, author, old_values)
  File ""build/bdist.macosx-10.7-x86_64/egg/mastertickets/api.py"", line 111, in ticket_changed
    links.save(author, comment, tkt.time_changed, db)
  File ""build/bdist.macosx-10.7-x86_64/egg/mastertickets/model.py"", line 76, in save
    (n, when_ts, author, 'comment', '', '(In #%s) %s'%(self.tkt.id, comment)))
  File ""/Users/francois/ticketimportplugin/0.11/env2.5/lib/python2.5/site-packages/Trac-0.12-py2.5.egg/trac/db/util.py"", line 65, in execute
    return self.cursor.execute(sql_escape_percent(sql), args)
  File ""/Users/francois/ticketimportplugin/0.11/env2.5/lib/python2.5/site-packages/Trac-0.12-py2.5.egg/trac/db/sqlite_backend.py"", line 79, in execute
    result = PyFormatCursor.execute(self, *args)
  File ""/Users/francois/ticketimportplugin/0.11/env2.5/lib/python2.5/site-packages/Trac-0.12-py2.5.egg/trac/db/sqlite_backend.py"", line 57, in execute
    args or [])
  File ""/Users/francois/ticketimportplugin/0.11/env2.5/lib/python2.5/site-packages/Trac-0.12-py2.5.egg/trac/db/sqlite_backend.py"", line 48, in _rollbac\
k_on_error
    return function(self, *args, **kwargs)
IntegrityError: columns ticket, time, field are not unique
}}}

See browser:ticketimportplugin/0.11/talm_importer/test.py@11805#L460",defect,reopened,normal,MasterTicketsPlugin,normal,,,jun66j5 falkb,0.12