Django 异步视图基类

骑猪看日落 2023-01-22 15:49 187阅读 0赞

from functools import update_wrapper
    
    from django.views import View as Django_View
    
    
    class View(Django_View):
    
        @classmethod
        def as_view(cls, **initkwargs):
            """Main entry point for a request-response process."""
            for key in initkwargs:
                if key in cls.http_method_names:
                    raise TypeError(
                        'The method name %s is not accepted as a keyword argument '
                        'to %s().' % (key, cls.__name__)
                    )
                if not hasattr(cls, key):
                    raise TypeError("%s() received an invalid keyword %r. as_view "
                                    "only accepts arguments that are already "
                                    "attributes of the class." % (cls.__name__, key))
    
            async def view(request, *args, **kwargs):
                self = cls(**initkwargs)
                self.setup(request, *args, **kwargs)
                if not hasattr(self, 'request'):
                    raise AttributeError(
                        "%s instance has no 'request' attribute. Did you override "
                        "setup() and forget to call super()?" % cls.__name__
                    )
                return await self.dispatch(request, *args, **kwargs)
    
            view.view_class = cls
            view.view_initkwargs = initkwargs
    
            # take name and docstring from class
            update_wrapper(view, cls, updated=())
    
            # and possible attributes set by decorators
            # like csrf_exempt from dispatch
            update_wrapper(view, cls.dispatch, assigned=())
            return view
    
        async def http_method_not_allowed(self, request, *args, **kwargs):
            return super().http_method_not_allowed(request, *args, **kwargs)
    
        async def dispatch(self, request, *args, **kwargs):
            if request.method.lower() in self.http_method_names:
                handler = getattr(self, request.method.lower(), self.http_method_not_allowed)
            else:
                handler = self.http_method_not_allowed
            return await handler(request, *args, **kwargs)
    
    
    class DogView(View):
        async def get(self, request):
            return JsonResponse({
        'hello': 'world'})