單擊模板中的按鈕或鏈接時，如何從 django CBV(ListView) 返回有序對象

Question

所以我正在用 Django 建立一個電子商務商店（學習后的第一個項目）。 我需要單擊模板中的排序，並讓 CBV 返回按價格或我在請求中指定的任何字段排序的 object。 這是我到目前為止所擁有的

按最低價格排序的模板

看法

class ClotheListView(ListView):
model = Clothe
paginate_by = 8

def get_filter_param(self):
    # Grab the absolute url and then retrieve the filter param
    filter_param = self.request.path.split("/")[-1]
    return filter_param

def get_queryset(self):
    filter_param = self.get_filter_param()
    if(filter_param != ""):
        queryset = self.model.objects.filter(cloth_gender=filter_param)
    else:
        queryset = self.model.objects.all()
    return queryset

    return clothes_filtered_list.qs

def get_ordering(self):
    ordering = self.request.GET.get('ordering', '-cloth_price')
    return ordering

def get_context_data(self, **kwargs):
    context = super().get_context_data(**kwargs)
    return context

Url.py

urlpatterns = [
path('', views.ClotheListView.as_view(), name="clothe_list"),
path('<slug:slug>', views.ClotheListView.as_view(),
     name="clothe_list_category"),
path('<int:pk>/', views.ClotheDetailView.as_view(), name="clothe_detail")

]

Answer 1

好的，我就是這樣做的：

模板

 <span class="float-end d-none d-lg-block mt-3"> Sort by: Price - <a href="{{request.path}}?ordering=-cloth_price">High To Low</a> | Price: <a href="{{request.path}}?ordering=+cloth_price">Low to High</a> </span>

看法

class ClotheListView(ListView):

model = Clothe
paginate_by = 8

def get_filter_param(self):
    # Grab the absolute url and then retrieve the filter param
    filter_param = self.request.path.split("/")[-1]
    return filter_param

def get_queryset(self):
    # code for price sorting
    default_order = "cloth_name"
    order_param = ""
    user_filter = ""
    try:
        order_param = self.request.GET.get('ordering').strip()
    except:
        pass

    try:
        user_filter = self.request.GET.get('filter').strip()
    except:
        pass

    order_by = order_param or default_order
    # End of sorting code

    filter_param = self.get_filter_param()
    if(filter_param != "" or not filter_param):
        if(user_filter != ""):
            queryset = self.model.objects.filter(
                cloth_gender=filter_param, cloth_category=user_filter)
        else:
            queryset = self.model.objects.filter(
                cloth_gender=filter_param)
    else:
        queryset = self.model.objects.all()
    return queryset.order_by(order_by)

def get_context_data(self, **kwargs):
    context = super().get_context_data(**kwargs)
    return context

url.py

urlpatterns = [
path('', views.ClotheListView.as_view(), name="clothe_list"),
path('<slug:slug>', views.ClotheListView.as_view(),
     name="clothe_list_category"),
path('<int:pk>/', views.ClotheDetailView.as_view(), name="clothe_detail")
]