/django/contrib/gis/models.py

1from django.db import connection
2
3if (hasattr(connection.ops, 'spatial_version') and
4    not connection.ops.mysql):
5    # Getting the `SpatialRefSys` and `GeometryColumns`
6    # models for the default spatial backend.  These
7    # aliases are provided for backwards-compatibility.
8    SpatialRefSys = connection.ops.spatial_ref_sys()
9    GeometryColumns = connection.ops.geometry_columns()