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from django.db.backends.base.base import NO_DB_ALIAS
from django.db.backends.postgresql.base import \
DatabaseWrapper as Psycopg2DatabaseWrapper
from .features import DatabaseFeatures
from .introspection import PostGISIntrospection
from .operations import PostGISOperations
from .schema import PostGISSchemaEditor
class DatabaseWrapper(Psycopg2DatabaseWrapper):
SchemaEditorClass = PostGISSchemaEditor
def __init__(self, *args, **kwargs):
super(DatabaseWrapper, self).__init__(*args, **kwargs)
if kwargs.get('alias', '') != NO_DB_ALIAS:
self.features = DatabaseFeatures(self)
self.ops = PostGISOperations(self)
self.introspection = PostGISIntrospection(self)
def prepare_database(self):
super(DatabaseWrapper, self).prepare_database()
# Check that postgis extension is installed.
with self.cursor() as cursor:
cursor.execute("CREATE EXTENSION IF NOT EXISTS postgis")
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