Option show_traceback in loaddata does not work properly - instead of correct traceback TransactionManagementError? is displayed.
Option show_traceback was introduced in this commit:
http://code.djangoproject.com/changeset/6936
Relevant parts of code that cause this problem:
78 try:
...
93 try:
...
100 except Exception, e:
101 fixture.close()
102 transaction.rollback()
103 transaction.leave_transaction_management()
104 if show_traceback:
105 raise
106 sys.stderr.write(
107 self.style.ERROR("Problem installing fixture '%s': %s\n" %
108 (full_path, str(e))))
109 return
110 fixture.close()
111 except:
112 if verbosity > 2:
113 print "No %s fixture '%s' in %s." % \
114 (format, fixture_name, humanize(fixture_dir))
...
124 transaction.commit()
125 transaction.leave_transaction_management()
In case of error in line 103 transaction block is finished and exception is raised again, but in line 111 this exception is cached and processing continues. If option show_traceback is turned off, it simply returns from the command in line 109 so it is ok then.
Example:
$ python manage.py loaddata backup.json --traceback
Installing json fixture 'backup' from absolute path.
Traceback (most recent call last):
File "manage.py", line 21, in <module>
execute_manager(settings)
File "/usr/lib/python2.5/site-packages/django/core/management/__init__.py", line 272, in execute_manager
utility.execute()
File "/usr/lib/python2.5/site-packages/django/core/management/__init__.py", line 219, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/lib/python2.5/site-packages/django/core/management/base.py", line 72, in run_from_argv
self.execute(*args, **options.__dict__)
File "/usr/lib/python2.5/site-packages/django/core/management/base.py", line 86, in execute
output = self.handle(*args, **options)
File "/usr/lib/python2.5/site-packages/django/core/management/commands/loaddata.py", line 125, in handle
transaction.leave_transaction_management()
File "/usr/lib/python2.5/site-packages/django/db/transaction.py", line 67, in leave_transaction_management
raise TransactionManagementError("This code isn't under transaction management")
django.db.transaction.TransactionManagementError: This code isn't under transaction management
