def make_atom(self, child, qn, connection):
lvalue, lookup_type, value_annot, params_or_value = child
# if spatial query
if isinstance(lvalue, GeoConstraint):
return GeoWhereNode.make_atom(self, child, qn, connection)
# else might be an HSTORE query
return HStoreWhereNode.make_atom(self, child, qn, connection)
def make_atom(self, child, qn, connection):
lvalue, lookup_type, value_annot, params_or_value = child
# if spatial query
if isinstance(lvalue, GeoConstraint):
return GeoWhereNode.make_atom(self, child, qn, connection)
# else might be an HSTORE query
return HStoreWhereNode.make_atom(self, child, qn, connection)
def _geo_field(self, field_name=None):
"""
Returns the first Geometry field encountered; or specified via the
`field_name` keyword. The `field_name` may be a string specifying
the geometry field on this GeoQuery's model, or a lookup string
to a geometry field via a ForeignKey relation.
"""
if field_name is None:
# Incrementing until the first geographic field is found.
for fld in self.model._meta.fields:
if isinstance(fld, GeometryField): return fld
return False
else:
# Otherwise, check by the given field name -- which may be
# a lookup to a _related_ geographic field.
return GeoWhereNode._check_geo_field(self.model._meta, field_name)
def _geo_field(self, field_name=None):
"""
Returns the first Geometry field encountered; or specified via the
`field_name` keyword. The `field_name` may be a string specifying
the geometry field on this GeoQuery's model, or a lookup string
to a geometry field via a ForeignKey relation.
"""
if field_name is None:
# Incrementing until the first geographic field is found.
for fld in self.model._meta.fields:
if isinstance(fld, GeometryField): return fld
return False
else:
# Otherwise, check by the given field name -- which may be
# a lookup to a _related_ geographic field.
return GeoWhereNode._check_geo_field(self.model._meta, field_name)