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Initial resources code
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87
djangorestframework/resources.py
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87
djangorestframework/resources.py
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from functools import update_wrapper
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import inspect
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from django.utils.decorators import classonlymethod
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from djanorestframework import views, generics
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def wrapped(source, dest):
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"""
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Copy public, non-method attributes from source to dest, and return dest.
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"""
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for attr in [attr for attr in dir(source)
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if not attr.startswith('_') and not inspect.ismethod(attr)]:
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setattr(dest, attr, getattr(source, attr))
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return dest
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class ResourceMixin(object):
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"""
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Clone Django's `View.as_view()` behaviour *except* using REST framework's
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'method -> action' binding for resources.
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"""
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@classonlymethod
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def as_view(cls, actions, **initkwargs):
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"""
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Main entry point for a request-response process.
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"""
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# sanitize keyword arguments
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for key in initkwargs:
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if key in cls.http_method_names:
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raise TypeError("You tried to pass in the %s method name as a "
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"keyword argument to %s(). Don't do that."
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% (key, cls.__name__))
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if not hasattr(cls, key):
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raise TypeError("%s() received an invalid keyword %r" % (
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cls.__name__, key))
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def view(request, *args, **kwargs):
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self = cls(**initkwargs)
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# Bind methods to actions
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for method, action in actions.items():
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handler = getattr(self, action)
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setattr(self, method, handler)
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# As you were, solider.
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if hasattr(self, 'get') and not hasattr(self, 'head'):
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self.head = self.get
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return self.dispatch(request, *args, **kwargs)
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# take name and docstring from class
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update_wrapper(view, cls, updated=())
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# and possible attributes set by decorators
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# like csrf_exempt from dispatch
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update_wrapper(view, cls.dispatch, assigned=())
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return view
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class Resource(ResourceMixin, views.APIView):
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pass
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class ModelResource(ResourceMixin, views.APIView):
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root_class = generics.RootAPIView
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detail_class = generics.InstanceAPIView
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def root_view(self):
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return wrapped(self, self.root_class())
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def detail_view(self):
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return wrapped(self, self.detail_class())
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def list(self, request, *args, **kwargs):
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return self.root_view().list(request, args, kwargs)
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def create(self, request, *args, **kwargs):
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return self.root_view().create(request, args, kwargs)
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def retrieve(self, request, *args, **kwargs):
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return self.detail_view().retrieve(request, args, kwargs)
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def update(self, request, *args, **kwargs):
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return self.detail_view().update(request, args, kwargs)
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def destroy(self, request, *args, **kwargs):
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return self.detail_view().destroy(request, args, kwargs)
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