def create_schema(name, **options):
"""
This function creates a schema and perform a syncdb on it.
As we call some syncdb and migrate management commands, we can't rely on
transaction support.
We are going to catch any exception (including SystemExit).
"""
try:
cursor = connection.cursor()
# We can't use params with system names
cursor.execute('CREATE SCHEMA "%s"' % escape_schema_name(name))
transaction.commit_unless_managed()
defaults = {
'verbosity': 0,
'traceback': None,
'noinput': True
}
defaults.update(options)
sync_options = options
# We never want migration to launch with syncdb call
sync_options['migrate'] = False
_, isolated_apps = get_apps()
syncdb_apps(isolated_apps, name, **sync_options)
migrate_apps(get_migration_candidates(isolated_apps), name, **options)
schema_store.reset_path()
except BaseException, e:
drop_schema(name)
raise Exception(str(e))
def handle(self, app=None, target=None, skip=False, merge=False,
backwards=False, fake=False, db_dry_run=False, show_list=False,
database=DEFAULT_DB_ALIAS, delete_ghosts=False, ignore_ghosts=False,
**options):
if not 'south' in settings.INSTALLED_APPS:
raise CommandError('South is not installed.')
verbosity = int(options.get('verbosity', 0))
shared, isolated = get_apps()
if options.get('all_apps', False):
target = app
app = None
# Migrate each app
if app:
apps = [app]
else:
apps = settings.INSTALLED_APPS
options.update({
'target': target,
'skip': skip,
'merge': merge,
'backwards': backwards,
'fake': fake,
'db_dry_run': db_dry_run,
'show_list': show_list,
'database': database,
'delete_ghosts': delete_ghosts,
'ignore_ghosts': ignore_ghosts
})
shared_apps = [x for x in get_migration_candidates(shared) if x in apps]
isolated_apps = [x for x in get_migration_candidates(isolated) if x in apps]
try:
if len(shared_apps) > 0:
if verbosity:
print "---------------------"
print "SHARED APPS migration"
print "---------------------\n"
migrate_apps(shared_apps, None, **options)
if len(isolated_apps) == 0:
return
schema_list = [x.name for x in Schema.objects.active()]
for schema in schema_list:
if verbosity:
print "\n----------------------------------"
print "ISOLATED APPS migration on schema: %s" % schema
print "----------------------------------\n"
migrate_apps(isolated_apps, schema=schema, **options)
finally:
load_post_syncdb_signals()