IntegrityError: columns type, name are not unique

[canh_nh]

How to Reproduce

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

(please provide additional details here)

Request parameters:

{'__FORM_TOKEN': u'e943683d6623bea0d1f13d0d',
 'cat_id': u'ticket',
 'name': u'Crash',
 'panel_id': u'priority',
 'path_info': u'blocker',
 'save': u'Save'}

User Agent was: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.7) Gecko/2009021910 Firefox/3.0.7

System Information

Trac	0.11.2.1
Python	2.4.3 (#1, May 24 2008, 13:47:28) [GCC 4.1.2 20070626 (Red Hat 4.1.2-14)]
setuptools	0.6c9
SQLite	3.3.6
pysqlite	1.1.7
Genshi	0.5.1
mod_python	3.2.8
jQuery:	1.2.6

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/Trac-0.11.2.1-py2.4.egg/trac/web/main.py", line 432, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.2.1-py2.4.egg/trac/web/main.py", line 204, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.2.1-py2.4.egg/trac/admin/web_ui.py", line 113, in process_request
    path_info)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.2.1-py2.4.egg/trac/ticket/admin.py", line 43, in render_admin_panel
    return self._render_admin_panel(req, cat, page, version)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.2.1-py2.4.egg/trac/ticket/admin.py", line 332, in _render_admin_panel
    enum.update()
  File "/usr/lib/python2.4/site-packages/Trac-0.11.2.1-py2.4.egg/trac/ticket/model.py", line 453, in update
    (self.name, self.value, self.type, self._old_name))
  File "/usr/lib/python2.4/site-packages/Trac-0.11.2.1-py2.4.egg/trac/db/util.py", line 50, in execute
    return self.cursor.execute(sql_escape_percent(sql), args)
  File "/usr/lib/python2.4/site-packages/sqlite/main.py", line 255, in execute
    self.rs = self.con.db.execute(SQL % parms)
IntegrityError: columns type, name are not unique

[Christian Boos]

Duplicate of #6348