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"""
Generic views that provide commmonly needed behaviour.
"""
from djangorestframework import views, mixins
from django.views.generic.detail import SingleObjectMixin
from django.views.generic.list import MultipleObjectMixin
### Base classes for the generic views ###
class BaseView(views.APIView):
"""
Base class for all other generic views.
"""
serializer_class = None
def get_serializer(self, data=None, files=None, instance=None):
# TODO: add support for files
# TODO: add support for seperate serializer/deserializer
context = {
'request': self.request,
'format': self.kwargs.get('format', None)
}
return self.serializer_class(data, instance=instance, context=context)
class MultipleObjectBaseView(MultipleObjectMixin, BaseView):
"""
Base class for generic views onto a queryset.
"""
pass
class SingleObjectBaseView(SingleObjectMixin, BaseView):
"""
Base class for generic views onto a model instance.
"""
def get_object(self):
"""
Override default to add support for object-level permissions.
"""
obj = super(SingleObjectBaseView, self).get_object()
self.check_permissions(self.request, obj)
return obj
### Concrete view classes that provide method handlers ###
### by composing the mixin classes with a base view. ###
class ListAPIView(mixins.ListModelMixin,
mixins.MetadataMixin,
MultipleObjectBaseView):
"""
Concrete view for listing a queryset.
"""
def get(self, request, *args, **kwargs):
return self.list(request, *args, **kwargs)
def options(self, request, *args, **kwargs):
return self.metadata(request, *args, **kwargs)
class RootAPIView(mixins.ListModelMixin,
mixins.CreateModelMixin,
mixins.MetadataMixin,
MultipleObjectBaseView):
"""
Concrete view for listing a queryset or creating a model instance.
"""
def get(self, request, *args, **kwargs):
return self.list(request, *args, **kwargs)
def post(self, request, *args, **kwargs):
return self.create(request, *args, **kwargs)
def options(self, request, *args, **kwargs):
return self.metadata(request, *args, **kwargs)
class DetailAPIView(mixins.RetrieveModelMixin,
mixins.MetadataMixin,
SingleObjectBaseView):
"""
Concrete view for retrieving a model instance.
"""
def get(self, request, *args, **kwargs):
return self.retrieve(request, *args, **kwargs)
def options(self, request, *args, **kwargs):
return self.metadata(request, *args, **kwargs)
class InstanceAPIView(mixins.RetrieveModelMixin,
mixins.UpdateModelMixin,
mixins.DestroyModelMixin,
mixins.MetadataMixin,
SingleObjectBaseView):
"""
Concrete view for retrieving, updating or deleting a model instance.
"""
def get(self, request, *args, **kwargs):
return self.retrieve(request, *args, **kwargs)
def put(self, request, *args, **kwargs):
return self.update(request, *args, **kwargs)
def delete(self, request, *args, **kwargs):
return self.destroy(request, *args, **kwargs)
def options(self, request, *args, **kwargs):
return self.metadata(request, *args, **kwargs)
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