更改get\ context\ data中的queryset后,分页不起作用

get_queryset ,以便在查询集分页之前运行。

def get_queryset(self):
    queryset = Log.objects.filter(user=self.request.user).all()
    if 'reverse' in self.request.GET:
        queryset = queryset.order_by('date_add')
    return queryset

get_context_data of the MultipleObjectMixin [GitHub] :

def get_context_data(self, *, object_list=None, **kwargs):
    """Get the context for this view."""
    queryset = object_list if object_list is not None else self.object_list
    page_size = self.get_paginate_by(queryset)
    context_object_name = self.get_context_object_name(queryset)
    if page_size:
        paginator, page, queryset, is_paginated = self.paginate_queryset(queryset, page_size)
        context = {
            'paginator': paginator,
            'page_obj': page,
            'is_paginated': is_paginated,
            'object_list': queryset
        }
    else:
        context = {
            'paginator': None,
            'page_obj': None,
            'is_paginated': False,
            'object_list': queryset
        }
    if context_object_name is not None:
        context[context_object_name] = queryset
    context.update(kwargs)
    return super().get_context_data(**context)

此分页。

我认为在这个用例中,将逻辑转移到 get_queryset 方法,在这种情况下,你甚至 必须覆盖 获取上下文数据 :

class LogView(ListView):
    model = UserLog
    template_name = 'log.html'
    context_object_name = 'log_list'
    paginate_by = 13

    def get_queryset(self):
        if 'reverse' in self.request.GET:
            return Log.objects.filter(user=self.request.user).all().order_by('date_add')
        else:
            return Log.objects.filter(user=self.request.user).all()

1. 'reverse' 是 不 self.request.GET ,这意味着-除非您在模型中排序-没有顺序,因此分页可能会在多个页面上出错;
2. page 输入 request.GET ,这可能会导致更改GET参数的链接出现一些问题,因为如果使用 ?page=3 ,的 reverse