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from psycopg2 import ProgrammingError
from psycopg2.extras import register_hstore
from django.utils import six
def register_hstore_handler(connection, **kwargs):
if connection.vendor != 'postgresql':
return
try:
if six.PY2:
register_hstore(connection.connection, globally=True, unicode=True)
else:
register_hstore(connection.connection, globally=True)
except ProgrammingError:
# Hstore is not available on the database.
#
# If someone tries to create an hstore field it will error there.
# This is necessary as someone may be using PSQL without extensions
# installed but be using other features of contrib.postgres.
#
# This is also needed in order to create the connection in order to
# install the hstore extension.
pass
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