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98 lines
3.2 KiB
Python
98 lines
3.2 KiB
Python
"""
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Basic building blocks for generic class based views.
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We don't bind behaviour to http method handlers yet,
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which allows mixin classes to be composed in interesting ways.
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Eg. Use mixins to build a Resource class, and have a Router class
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perform the binding of http methods to actions for us.
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"""
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from rest_framework import status
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from rest_framework.response import Response
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class CreateModelMixin(object):
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"""
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Create a model instance.
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Should be mixed in with any `BaseView`.
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"""
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def create(self, request, *args, **kwargs):
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serializer = self.get_serializer(data=request.DATA)
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if serializer.is_valid():
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self.object = serializer.object
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self.object.save()
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return Response(serializer.data, status=status.HTTP_201_CREATED)
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return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
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class ListModelMixin(object):
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"""
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List a queryset.
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Should be mixed in with `MultipleObjectBaseView`.
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"""
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def list(self, request, *args, **kwargs):
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self.object_list = self.get_queryset()
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serializer = self.get_serializer(instance=self.object_list)
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return Response(serializer.data)
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class RetrieveModelMixin(object):
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"""
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Retrieve a model instance.
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Should be mixed in with `SingleObjectBaseView`.
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"""
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def retrieve(self, request, *args, **kwargs):
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self.object = self.get_object()
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serializer = self.get_serializer(instance=self.object)
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return Response(serializer.data)
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class UpdateModelMixin(object):
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"""
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Update a model instance.
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Should be mixed in with `SingleObjectBaseView`.
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"""
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def update(self, request, *args, **kwargs):
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self.object = self.get_object()
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serializer = self.get_serializer(data=request.DATA, instance=self.object)
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if serializer.is_valid():
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self.object = serializer.object
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self.object.save()
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return Response(serializer.data)
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return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
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class DestroyModelMixin(object):
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"""
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Destroy a model instance.
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Should be mixed in with `SingleObjectBaseView`.
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"""
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def destroy(self, request, *args, **kwargs):
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self.object = self.get_object()
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self.object.delete()
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return Response(status=status.HTTP_204_NO_CONTENT)
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class MetadataMixin(object):
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"""
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Return a dicitonary of view metadata.
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Should be mixed in with any `BaseView`.
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This mixin is typically used for the HTTP 'OPTIONS' method.
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"""
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def metadata(self, request, *args, **kwargs):
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content = {
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'name': self.get_name(),
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'description': self.get_description(),
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'renders': [renderer.media_type for renderer in self.renderer_classes],
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'parses': [parser.media_type for parser in self.parser_classes],
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}
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# TODO: Add 'fields', from serializer info.
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# form = self.get_bound_form()
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# if form is not None:
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# field_name_types = {}
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# for name, field in form.fields.iteritems():
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# field_name_types[name] = field.__class__.__name__
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# content['fields'] = field_name_types
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return Response(content, status=status.HTTP_200_OK)
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