Question

如何使用具有多个网址参数的通用视图？像

GET /author/{author_id}/book/{book_id}

class Book(generics.RetrieveAPIView):

    queryset = Book.objects.all()
    serializer_class = BookSerializer
    lookup_field = 'book_id'
    lookup_url_kwarg = 'book_id'

    # lookup_field = 'author_id' for author
    # lookup_url_kwarg = 'author_id'

Answer 1

You'll need to use named groups in your URL structure，可能还有override the get() method of your view。

Answer 2

只需添加一点custom Mixin：

在urls.py中：

...

path('/author/<int:author_id>/book/<int:book_id>', views.Book.as_view()),

...

在views.py中：改编自 DRF documentation 中的示例：

class MultipleFieldLookupMixin:
    def get_object(self):
        queryset = self.get_queryset()                          # Get the base queryset
        queryset = self.filter_queryset(queryset)               # Apply any filter backends
        multi_filter = {field: self.kwargs[field] for field in self.lookup_fields}
        obj = get_object_or_404(queryset, **multi_filter)       # Lookup the object
        self.check_object_permissions(self.request, obj)
        return obj


class Book(MultipleFieldLookupMixin, generics.RetrieveAPIView):
    queryset = Book.objects.all()
    serializer_class = BookSerializer
    lookup_fields = ['author_id', 'book_id']    # possible thanks to custom Mixin

django-rest-framework如何处理多个URL参数？

2 个答案: