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Added experimental support for a POSTGIS_VERSION setting for GeoDjango. If set, it will tell GeoDjango not to do the postgis_lib_version() query every time the server starts up (assuming a PostGIS backend). This is intentionally undocumented because Justin mentioned he might be refactoring the backends for Django 1.2 such that this setting would be unnecessary. Until then, people can use this hook. 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10549 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Adrian Holovaty 2009-04-12 07:19:56 +00:00
parent 91fe5d50dd
commit ffd7b177c9
1 changed files with 17 additions and 3 deletions
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20
django/contrib/gis/db/backend/postgis/query.py
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@ -2,16 +2,30 @@
This module contains the spatial lookup types, and the get_geo_where_clause()
routine for PostGIS.
"""
import re
from decimal import Decimal
from django.db import connection
from django.conf import settings
from django.contrib.gis.measure import Distance
from django.contrib.gis.db.backend.postgis.management import postgis_version_tuple
from django.contrib.gis.db.backend.util import SpatialOperation, SpatialFunction
qn = connection.ops.quote_name
# Getting the PostGIS version information
POSTGIS_VERSION, MAJOR_VERSION, MINOR_VERSION1, MINOR_VERSION2 = postgis_version_tuple()
# Get the PostGIS version information.
# To avoid the need to do a database query to determine the PostGIS version
# each time the server starts up, one can optionally specify a
# POSTGIS_VERSION setting. This setting is intentionally undocumented and
# should be considered experimental, because an upcoming GIS backend
# refactoring might remove the need for it.
if hasattr(settings, 'POSTGIS_VERSION') and settings.POSTGIS_VERSION is not None:
version_tuple = settings.POSTGIS_VERSION
else:
# This import is intentionally within the 'else' so that it isn't executed
# if the POSTGIS_VERSION setting is available.
from django.contrib.gis.db.backend.postgis.management import postgis_version_tuple
version_tuple = postgis_version_tuple()
POSTGIS_VERSION, MAJOR_VERSION, MINOR_VERSION1, MINOR_VERSION2 = version_tuple
# The supported PostGIS versions.
# TODO: Confirm tests with PostGIS versions 1.1.x -- should work.