[英]How to return ordered objects from django CBV(ListView) when you click a button or link in the template
So I'm building an e-commerce store with Django(First project after learning).所以我正在用 Django 建立一个电子商务商店(学习后的第一个项目)。 I need to click on Sort in the template, and have the CBV return an object that's ordered by either, price, or whatever field I specify in the request.我需要单击模板中的排序,并让 CBV 返回按价格或我在请求中指定的任何字段排序的 object。 This is what I have so far这是我到目前为止所拥有的
Template Sort by Lowest Price按最低价格排序的模板
View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 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")
] ]
ok, so this is how I did it:好的,我就是这样做的:
Template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>
View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 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")
]
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