South fails to migrate on custom field AutoNow whcih extends Datetime field

[dextrous85@…]

• Migrating forwards to 0001_initial.

  milestones:0001_initial
  

Traceback (most recent call last):

File "manage.py", line 11, in <module>

execute_manager(settings)

File "/usr/local/lib/python2.6/site-packages/Django-1.1.1-py2.6.egg/django/core/management/init.py", line 362, in execute_manager

utility.execute()

File "/usr/local/lib/python2.6/site-packages/Django-1.1.1-py2.6.egg/django/core/management/init.py", line 303, in execute

self.fetch_command(subcommand).run_from_argv(self.argv)

File "/usr/local/lib/python2.6/site-packages/Django-1.1.1-py2.6.egg/django/core/management/base.py", line 195, in run_from_argv

self.execute(*args, options.dict)

File "/usr/local/lib/python2.6/site-packages/Django-1.1.1-py2.6.egg/django/core/management/base.py", line 222, in execute

output = self.handle(*args, options)

File "/setup/trunk/sspl/src/ssplsite/../shared/south/management/commands/migrate.py", line 105, in handle

ignore_ghosts = ignore_ghosts,

File "/setup/trunk/sspl/src/ssplsite/../shared/south/migration/init.py", line 191, in migrate_app

success = migrator.migrate_many(target, workplan, database)

File "/setup/trunk/sspl/src/ssplsite/../shared/south/migration/migrators.py", line 221, in migrate_many

result = migrator.class.migrate_many(migrator, target, migrations, database)

File "/setup/trunk/sspl/src/ssplsite/../shared/south/migration/migrators.py", line 292, in migrate_many

result = self.migrate(migration, database)

File "/setup/trunk/sspl/src/ssplsite/../shared/south/migration/migrators.py", line 125, in migrate

result = self.run(migration)

File "/setup/trunk/sspl/src/ssplsite/../shared/south/migration/migrators.py", line 93, in run

south.db.db.current_orm = self.orm(migration)

File "/setup/trunk/sspl/src/ssplsite/../shared/south/migration/migrators.py", line 246, in orm

return migration.orm()

File "/setup/trunk/sspl/src/ssplsite/../shared/south/utils.py", line 62, in method

value = function(self)

File "/setup/trunk/sspl/src/ssplsite/../shared/south/migration/base.py", line 422, in orm

return FakeORM(self.migration_class(), self.app_label())

File "/setup/trunk/sspl/src/ssplsite/../shared/south/orm.py", line 46, in FakeORM

_orm_cache[args] = _FakeORM(*args)

File "/setup/trunk/sspl/src/ssplsite/../shared/south/orm.py", line 125, in init

self.models[name] = self.make_model(app_label, model_name, data)

File "/setup/trunk/sspl/src/ssplsite/../shared/south/orm.py", line 318, in make_model

field = self.eval_in_context(code, app, extra_imports)

File "/setup/trunk/sspl/src/ssplsite/../shared/south/orm.py", line 236, in eval_in_context

return eval(code, globals(), fake_locals)

File "<string>", line 1

SouthFieldClass?(default=datetime.datetime(2010, 8, 31, 4, 23, 35, 884429, tzinfo=<DstTzInfo? 'America/Chicago?' CDT-1 day, 19:00:00 DST>))

SyntaxError?: invalid syntax

[andrew]

Looks like the freezer is failing with timezones - I'll have to just modify it to ignore timezones.

In the meantime, you can work around it by manually editing the resulting migration.

[scytale@…]

any other thoughts on how to work round this?
the exception is thrown before the migration is created so editing the migration is not an option.
I'd happily patch South - though I'm finding the code generation time-consuming to get my head around. Any hints on where the code to ignore timezones should go?

[anonymous]

How is the exception thrown before migrating? I have the same problem and successfully solved it via sed:

        python irrigation/manage.py schemamigration --auto rainman
        find irrigation/rainman/migrations/ -name \*.py -mtime -0.1 -print0 | xargs -0r \
        sed -i \
                -e "s/{'default': 'datetime.datetime(.* tzinfo=<UTC>)'}/{}/" \
                -e "s/'default': 'datetime.datetime(.* tzinfo=<UTC>)',//"    \
                -e "s/(default=datetime.datetime(.*tzinfo=<UTC>))/()/"       \
                -e "s/default=datetime.datetime(.*tzinfo=<UTC>),//"
        python irrigation/manage.py migrate rainman
        # might have to modify if broken
        git add irrigation/rainman/migrations/*.py

Not my best sed script, in fact I should use perl instead (it has .*?), but ...