Fixed #16537 -- Fixed multi-db issues with GeoDjango utilities. Thanks, Shane...

        else:

            raise LayerMapError('Unrecognized transaction mode: %s' % transaction_mode)

        if using is None:

            pass

    #### Checking routines used during initialization ####

    def check_fid_range(self, fid_range):

        "This checks the `fid_range` keyword."

        # Attempting to retrieve and return the related model.

        try:

            return rel_model.objects.get(**fk_kwargs)

            return rel_model.objects.using(self.using).get(**fk_kwargs)

        except ObjectDoesNotExist:

            raise MissingForeignKey('No ForeignKey %s model found with keyword arguments: %s' % (rel_model.__name__, fk_kwargs))

        SpatialRefSys = self.spatial_backend.spatial_ref_sys()

        try:

            # Getting the target spatial reference system

            target_srs = SpatialRefSys.objects.get(srid=self.geo_field.srid).srs

            target_srs = SpatialRefSys.objects.using(self.using).get(srid=self.geo_field.srid).srs

            # Creating the CoordTransform object

            return CoordTransform(self.source_srs, target_srs)

from django.contrib.gis.gdal import SpatialReference

from django.db import connections, DEFAULT_DB_ALIAS

def add_srs_entry(srs, auth_name='EPSG', auth_srid=None, ref_sys_name=None,

                  database=DEFAULT_DB_ALIAS):

                  database=None):

    """

    This function takes a GDAL SpatialReference system and adds its information

    to the `spatial_ref_sys` table of the spatial backend.  Doing this enables

      of `django.db.DEFAULT_DB_ALIAS` (at the time of this writing, it's value

      is 'default').

    """

    from django.db import connections, DEFAULT_DB_ALIAS

    if not database:

        database = DEFAULT_DB_ALIAS

    connection = connections[database]

    if not hasattr(connection.ops, 'spatial_version'):

        raise Exception('The `add_srs_entry` utility only works '

                        'with spatial backends.')

    try:

        # Try getting via SRID only, because using all kwargs may

        # differ from exact wkt/proj in database.

        sr = SpatialRefSys.objects.get(srid=srs.srid)

        sr = SpatialRefSys.objects.using(database).get(srid=srs.srid)

    except SpatialRefSys.DoesNotExist:

        sr = SpatialRefSys.objects.create(**kwargs)

        sr = SpatialRefSys.objects.using(database).create(**kwargs)

# Alias is for backwards-compatibility purposes.

add_postgis_srs = add_srs_entry