AttributeError: 'Ticket' object has no attribute '_get_db_for_write'

[babu@…]

How to Reproduce

While doing a POST operation on /ticket/812, Trac issued an internal error.

(please provide additional details here)

Request parameters:

{'__FORM_TOKEN': u'2172f1a91080ac5b655ef0a1',
 'action': u'leave',
 'cnum': u'5',
 'comment': u'',
 'field_cc': u'',
 'field_description': u'3. Team 3 ( Saji)\r\n \r\n    Server            IP  \r\n    a. IE-6        192.168.0.65\r\n    b. IE-7        192.168.0.66\r\n    c. IE-8        192.168.0.67\r\n    Users: user1 -5\r\n    Password : rain\r\n\r\nI have tried to connect the virtual machines with the above details and it not working. \r\n\r\nIs virtual machines have installed Microsoft office to open docx? \r\n\r\n\r\n',
 'field_keywords': u'',
 'field_milestone': u'Applications',
 'field_priority': u'major',
 'field_reporter': u'babu@rainconcert.in',
 'field_summary': u'Virtual machine are not working',
 'field_type': u'defect',
 'id': u'812',
 'replyto': u'',
 'submit': u'Submit changes',
 'ts': u'2012-02-21 05:55:42.477387+00:00'}

User agent: Mozilla/5.0 (X11; Linux i686; rv:5.0) Gecko/20100101 Firefox/5.0

System Information

Trac	0.12
Genshi	0.6
mod_python	3.2.8
pysqlite	2.5.5
Python	2.4.3 (#1, Sep 3 2009, 15:37:12) [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)]
setuptools	0.6c11
SQLite	3.3.6
Subversion	1.4.2 (r22196)
jQuery	1.4.2

Enabled Plugins

BlackMagicTicketTweaks	0.12r1
RemovePendingStatusPlugin	0.0.4
TracAccountManager	0.2.1dev-r7737
TracPermRedirect	2.0

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/Trac-0.12-py2.4.egg/trac/web/main.py", line 513, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.4/site-packages/Trac-0.12-py2.4.egg/trac/web/main.py", line 235, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib/python2.4/site-packages/Trac-0.12-py2.4.egg/trac/ticket/web_ui.py", line 169, in process_request
    return self._process_ticket_request(req)
  File "/usr/lib/python2.4/site-packages/Trac-0.12-py2.4.egg/trac/ticket/web_ui.py", line 538, in _process_ticket_request
    self._do_save(req, ticket, action)
  File "/usr/lib/python2.4/site-packages/Trac-0.12-py2.4.egg/trac/ticket/web_ui.py", line 1233, in _do_save
    cnum=internal_cnum):
  File "/usr/lib/python2.4/site-packages/Trac-0.12-py2.4.egg/trac/ticket/model.py", line 353, in save_changes
    listener.ticket_changed(self, comment, author, old_values)
  File "build/bdist.linux-i686/egg/removepending/remove_pending.py", line 30, in ticket_changed
AttributeError: 'Ticket' object has no attribute '_get_db_for_write'

[Ryan J Ollos]

PendingTicketPlugin

[Ryan J Ollos]

Duplicate of #7808.