Replace HomeSettings with Presence Model class. Replace SiteSettings with
Site Model class. Derive Group Model class from Presence, adding the "home
page settings" properties in a Melange site presence to every Group.
Patch by: Todd Larsen
"""
This module provides the backend for spatial SQL construction with Django.
Specifically, this module will import the correct routines and modules
needed for GeoDjango to interface with the spatial database.
"""
from django.conf import settings
from django.contrib.gis.db.backend.util import gqn
# Retrieving the necessary settings from the backend.
if settings.DATABASE_ENGINE == 'postgresql_psycopg2':
from django.contrib.gis.db.backend.postgis import create_spatial_db, get_geo_where_clause, SpatialBackend
elif settings.DATABASE_ENGINE == 'oracle':
from django.contrib.gis.db.backend.oracle import create_spatial_db, get_geo_where_clause, SpatialBackend
elif settings.DATABASE_ENGINE == 'mysql':
from django.contrib.gis.db.backend.mysql import create_spatial_db, get_geo_where_clause, SpatialBackend
else:
raise NotImplementedError('No Geographic Backend exists for %s' % settings.DATABASE_ENGINE)