from rest_framework import serializers
from rest_framework.exceptions import ValidationError
from rest_framework.fields import BooleanField, NullBooleanField
from rest_framework.filters import BaseFilterBackend, OrderingFilter
from dynamic_rest.utils import is_truthy
from dynamic_rest.conf import settings
from dynamic_rest.datastructures import TreeMap
from dynamic_rest.fields import DynamicRelationField
from dynamic_rest.meta import (get_model_field, is_field_remote,
is_model_field, get_related_model)
from dynamic_rest.patches import patch_prefetch_one_level
from dynamic_rest.prefetch import FastQuery, FastPrefetch
from dynamic_rest.related import RelatedObject
patch_prefetch_one_level()
def has_joins(queryset):
"""Return True iff. a queryset includes joins.
If this is the case, it is possible for the queryset
to return duplicate results.
"""
for join in six.itervalues(queryset.query.alias_map):
if join.join_type:
return True
return False
class FilterNode(object):
from django.core.exceptions import ValidationError as InternalValidationError
from django.core.exceptions import ImproperlyConfigured
from django.db.models import Q, Prefetch
from django.utils import six
from rest_framework import serializers
from rest_framework.exceptions import ValidationError
from rest_framework.filters import BaseFilterBackend, OrderingFilter
from dynamic_rest.conf import settings
from dynamic_rest.datastructures import TreeMap
from dynamic_rest.fields import DynamicRelationField
from dynamic_rest.meta import get_model_field, is_field_remote, is_model_field
from dynamic_rest.patches import patch_prefetch_one_level
from dynamic_rest.related import RelatedObject
patch_prefetch_one_level()
def has_joins(queryset):
"""Return True iff. a queryset includes joins.
If this is the case, it is possible for the queryset
to return duplicate results.
"""
for join in six.itervalues(queryset.query.alias_map):
if join.join_type:
return True
return False
class FilterNode(object):