diff options
| -rw-r--r-- | django/contrib/gis/db/models/fields/__init__.py | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/django/contrib/gis/db/models/fields/__init__.py b/django/contrib/gis/db/models/fields/__init__.py index d4ec8a2fc9..b108c16b00 100644 --- a/django/contrib/gis/db/models/fields/__init__.py +++ b/django/contrib/gis/db/models/fields/__init__.py @@ -13,6 +13,10 @@ def deprecated_property(func): warn('This attribute has been deprecated, please use "%s" instead.' % func.__name__[1:]) return property(func) +# Local cache of the spatial_ref_sys table, which holds static data. +# This exists so that we don't have to hit the database each time. +SRID_CACHE = {} + class GeometryField(SpatialBackend.Field): "The base GIS field -- maps to the OpenGIS Specification Geometry type." @@ -60,7 +64,9 @@ class GeometryField(SpatialBackend.Field): super(GeometryField, self).__init__(**kwargs) # Calling the parent initializtion function def _populate_srid_info(self): - self._units_cache, self._units_name_cache, self._spheroid_cache = get_srid_info(self.srid) + if self.srid not in SRID_CACHE: + SRID_CACHE[self.srid] = get_srid_info(self.srid) + self._units_cache, self._units_name_cache, self._spheroid_cache = SRID_CACHE[self.srid] def _get_units(self): if self._units_cache is None: |