Not able to create new milestone: OperationalError: no such table: field_mapping

[amita_lele]

How to Reproduce

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

Not able to create new milestone.

Request parameters:

{'__FORM_TOKEN': u'a992f004831fa3781cb78992',
 'add': u'Add',
 'cat_id': u'ticket',
 'component': [u'ALL',
               u'ACE',
               u'ACF2',
               u'ACS',
               u'ADK',
               u'ADK - AgentCfg',
               u'ADK 64 - CertTool',
               u'AIX',
               u'AIX - Pwd synch',
               u'AS400 FTP',
               u'Adapter',
               u'AgentFramework',
               u'BuildForge',
               u'CCM',
               u'CMVC',
               u'Clarify',
               u'Cognos',
               u'DPRA',
               u'Dispatcher',
               u'Documentum',
               u'Entrust PKI',
               u'Groupwise',
               u'HP NIS',
               u'HPUX',
               u'IAT',
               u'IATJ',
               u'IDI Custom Adapter',
               u'ITDI Adapters',
               u'ITIM Server 5.1',
               u'ITIM server',
               u'ITIM server 4.5',
               u'ITIM server 4.6',
               u'ITIM server 5.0',
               u'ITIMx',
               u'Induction',
               u'Informix',
               u'LDAP IDI',
               u'LDAPX (ADK)',
               u'Linux',
               u'Misc',
               u'NDS',
               u'Notes',
               u'Oracle',
               u'Oracle IDI',
               u'Oracle eBS',
               u'OracleERP',
               u'Org. activities',
               u'PMDB',
               u'Peoplesoft',
               u'Posix Aix Group Adapter',
               u'QuickPlace',
               u'RACF',
               u'RCQ TDI adapter',
               u'RTC TDI Adapter',
               u'RaPM',
               u'Remedy',
               u'RsaAuthMgr',
               u'SAP',
               u'SQL Server',
               u'Siebel JDB',
               u'Siebel WebServices',
               u'Solaris',
               u'Solaris NIS',
               u'Sybase',
               u'TPOSM',
               u'TopSecret',
               u'Tracking',
               u'Training',
               u'Tru64',
               u'UDB DB2',
               u'UPA',
               u'UnixLinux',
               u'VIOS',
               u'W2K Agent',
               u'WinAD',
               u'WinLocal',
               u'Windows Pwd Synch',
               u'enroleagent',
               u'i5/OS',
               u'i5OS Pwd Sync',
               u'zLinux'],
 'duedate': u'12/31/2012',
 'name': u'Adapter tasks new',
 'panel_id': u'milestones',
 'path_info': None,
 'startdate': u'07/01/2012'}

User Agent was: Mozilla/5.0 (Windows NT 6.1; rv:12.0) Gecko/20100101 Firefox/12.0

System Information

Trac	0.11.2.1
Python	2.6.5 (r265:79063, Apr 16 2010, 13:28:26) [GCC 4.4.3]
setuptools	0.6
SQLite	3.7.3
pysqlite	2.4.1
Genshi	0.5.1
Pygments	1.2.2
RPC	1.0.6
FullBlog	0.1.1
jQuery:	1.3.2

Python Traceback

Traceback (most recent call last):
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.2.1-py2.6.egg/trac/web/main.py", line 455, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.2.1-py2.6.egg/trac/web/main.py", line 227, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.2.1-py2.6.egg/trac/admin/web_ui.py", line 116, in process_request
    path_info)
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.2.1-py2.6.egg/trac/ticket/admin.py", line 47, in render_admin_panel
    return self._render_admin_panel(req, cat, page, version)
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.2.1-py2.6.egg/trac/ticket/admin.py", line 363, in _render_admin_panel
    update_component_mapping(req.args.get('component', []), name)
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.2.1-py2.6.egg/trac/ticket/admin.py", line 188, in update_component_mapping
    field_map = model.FieldMapping(self.env,'milestone','component',name)
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.2.1-py2.6.egg/trac/ticket/model.py", line 1097, in __init__
    "WHERE fromfield='%s' AND tofield='%s' AND fromval='%s'"%(fromfield,tofield,fromval))
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.2.1-py2.6.egg/trac/db/util.py", line 51, in execute
    return self.cursor.execute(sql)
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.2.1-py2.6.egg/trac/db/sqlite_backend.py", line 58, in execute
    args or [])
  File "/usr/local/lib/python2.6/dist-packages/Trac-0.11.2.1-py2.6.egg/trac/db/sqlite_backend.py", line 50, in _rollback_on_error
    return function(self, *args, **kwargs)
OperationalError: no such table: field_mapping

[Remy Blank]

There's no table named field_mapping in Trac core, so this is a PluginIssue.