91 lines
3 KiB
Python
91 lines
3 KiB
Python
"""policy API Views"""
|
|
from django.core.exceptions import ObjectDoesNotExist
|
|
from rest_framework.serializers import (
|
|
ModelSerializer,
|
|
PrimaryKeyRelatedField,
|
|
SerializerMethodField,
|
|
)
|
|
from rest_framework.viewsets import ModelViewSet, ReadOnlyModelViewSet
|
|
|
|
from passbook.policies.forms import GENERAL_FIELDS
|
|
from passbook.policies.models import Policy, PolicyBinding, PolicyBindingModel
|
|
|
|
|
|
class PolicyBindingModelForeignKey(PrimaryKeyRelatedField):
|
|
"""rest_framework PrimaryKeyRelatedField which resolves
|
|
model_manager's InheritanceQuerySet"""
|
|
|
|
def use_pk_only_optimization(self):
|
|
return False
|
|
|
|
def to_internal_value(self, data):
|
|
if self.pk_field is not None:
|
|
data = self.pk_field.to_internal_value(data)
|
|
try:
|
|
# Due to inheritance, a direct DB lookup for the primary key
|
|
# won't return anything. This is because the direct lookup
|
|
# checks the PK of PolicyBindingModel (for example),
|
|
# but we get given the Primary Key of the inheriting class
|
|
for model in self.get_queryset().select_subclasses().all().select_related():
|
|
if model.pk == data:
|
|
return model
|
|
# as a fallback we still try a direct lookup
|
|
return self.get_queryset().get_subclass(pk=data)
|
|
except ObjectDoesNotExist:
|
|
self.fail("does_not_exist", pk_value=data)
|
|
except (TypeError, ValueError):
|
|
self.fail("incorrect_type", data_type=type(data).__name__)
|
|
|
|
def to_representation(self, value):
|
|
correct_model = PolicyBindingModel.objects.get_subclass(pbm_uuid=value.pbm_uuid)
|
|
return correct_model.pk
|
|
|
|
|
|
class PolicyBindingSerializer(ModelSerializer):
|
|
"""PolicyBinding Serializer"""
|
|
|
|
# Because we're not interested in the PolicyBindingModel's PK but rather the subclasses PK,
|
|
# we have to manually declare this field
|
|
target = PolicyBindingModelForeignKey(
|
|
queryset=PolicyBindingModel.objects.select_subclasses(),
|
|
required=True,
|
|
)
|
|
|
|
class Meta:
|
|
|
|
model = PolicyBinding
|
|
fields = ["pk", "policy", "target", "enabled", "order", "timeout"]
|
|
|
|
|
|
class PolicyBindingViewSet(ModelViewSet):
|
|
"""PolicyBinding Viewset"""
|
|
|
|
queryset = PolicyBinding.objects.all()
|
|
serializer_class = PolicyBindingSerializer
|
|
filterset_fields = ["policy", "target", "enabled", "order", "timeout"]
|
|
|
|
|
|
class PolicySerializer(ModelSerializer):
|
|
"""Policy Serializer"""
|
|
|
|
__type__ = SerializerMethodField(method_name="get_type")
|
|
|
|
def get_type(self, obj):
|
|
"""Get object type so that we know which API Endpoint to use to get the full object"""
|
|
return obj._meta.object_name.lower().replace("policy", "")
|
|
|
|
class Meta:
|
|
|
|
model = Policy
|
|
fields = ["pk"] + GENERAL_FIELDS + ["__type__"]
|
|
|
|
|
|
class PolicyViewSet(ReadOnlyModelViewSet):
|
|
"""Policy Viewset"""
|
|
|
|
queryset = Policy.objects.all()
|
|
serializer_class = PolicySerializer
|
|
|
|
def get_queryset(self):
|
|
return Policy.objects.select_subclasses()
|