diff options
| -rw-r--r-- | django/contrib/gis/db/models/lookups.py | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/django/contrib/gis/db/models/lookups.py b/django/contrib/gis/db/models/lookups.py index 58ca90072e..489eef1728 100644 --- a/django/contrib/gis/db/models/lookups.py +++ b/django/contrib/gis/db/models/lookups.py @@ -1,7 +1,5 @@ import re -from django.core.exceptions import FieldDoesNotExist -from django.db.models.constants import LOOKUP_SEP from django.db.models.expressions import Col, Expression from django.db.models.lookups import Lookup, Transform from django.db.models.sql.query import Query @@ -25,46 +23,6 @@ class GISLookup(Lookup): super().__init__(*args, **kwargs) self.template_params = {} - @classmethod - def _check_geo_field(cls, opts, lookup): - """ - Check the given lookup with the given model options. - The lookup is a string either specifying the geographic field, e.g. - 'point, 'the_geom', or a related lookup on a geographic field like - 'address__point'. - - Return a BaseSpatialField if one exists according to the given lookup - on the model options, otherwise return None. - """ - from django.contrib.gis.db.models.fields import BaseSpatialField - # This takes into account the situation where the lookup is a - # lookup to a related geographic field, e.g., 'address__point'. - field_list = lookup.split(LOOKUP_SEP) - - # Reversing so list operates like a queue of related lookups, - # and popping the top lookup. - field_list.reverse() - fld_name = field_list.pop() - - try: - geo_fld = opts.get_field(fld_name) - # If the field list is still around, then it means that the - # lookup was for a geometry field across a relationship -- - # thus we keep on getting the related model options and the - # model field associated with the next field in the list - # until there's no more left. - while len(field_list): - opts = geo_fld.remote_field.model._meta - geo_fld = opts.get_field(field_list.pop()) - except (FieldDoesNotExist, AttributeError): - return False - - # Finally, make sure we got a Geographic field and return. - if isinstance(geo_fld, BaseSpatialField): - return geo_fld - else: - return False - def process_band_indices(self, only_lhs=False): """ Extract the lhs band index from the band transform class and the rhs |