Django-Filter FilterSet 仅显示用户生成的对象

Question

我正在使用 django-filter 表单，它正在过滤“关联组合”的所有对象我怎样才能使它只向用户显示他们创建的对象？

错误信息：

'StatsFilter' object has no attribute 'fields'

过滤器.py

class StatsFilter(django_filters.FilterSet):
    associated_portfolios = django_filters.ModelMultipleChoiceFilter(queryset=associated_portfolios)

    class Meta:
        model = Trade
        fields = ['type', 'asset', 'symbol', 'broker', 'patterns', 'associated_portfolios']

    def __init__(self, request, *args, **kwargs):
        super(StatsFilter, self).__init__(*args, **kwargs)
        self.fields['associated_portfolios'].queryset = Trade.objects.filter(user=request.user)]

views.py

class StatsView(LoginRequiredMixin, FilterView):
    model = Trade
    template_name = 'dashboard/stats.html'
    filterset_class = StatsFilter

    def get_context_data(self, **kwargs):
        filter = StatsFilter(self.request.GET, queryset=self.get_queryset())
        context = super().get_context_data(**kwargs)
        context['filter'] = filter
        context['get_users_trades'] = Trade.objects.get_users_trades('tj3admin')
        context['get_largest_winning_trade'] = filter.qs.aggregate(max_value=Max('profit_loss_value_fees'))['max_value']
        return context

Answer 1

啊，现在我想起来了：将 ModelMultipleChoiceFilter 的 queryset 参数设置为接受请求作为唯一参数的可调用对象：

def portfolio_filtered_queryset(request):
    return Trade.objects.filter(user=request.user)

class StatsFilter(django_filters.FilterSet):
    associated_portfolios = django_filters.ModelMultipleChoiceFilter(queryset=porfolio_filtered_queryset)

The view:
class StatsView(LoginRequiredMixin, FilterView):
    model = Trade
    template_name = 'dashboard/stats.html'
    filterset_class = StatsFilter

    def get_context_data(self, **kwargs):
        # Must pass in request!
        filter = StatsFilter(self.request.GET, queryset=self.get_queryset(), request=self.request)
        context = super().get_context_data(**kwargs)
        context['filter'] = filter
        context['get_users_trades'] = Trade.objects.get_users_trades('tj3admin')
        context['get_largest_winning_trade'] = filter.qs.aggregate(max_value=Max('profit_loss_value_fees'))['max_value']
        return context

在django_filters.filters.QuerySetRequestMixin.get_request() 中，请求实例是从父级获取的。但是我在django_filters.filterset.BaseFilterSet 或试图通过其他方式获取请求的具体情况中看不到任何逻辑。因此，如果您希望使用 QuerySetRequestMixin，则必须将请求传递给 StatsFilter。