I've found only one topic like this and not a single answer in there seems to work. I have two context processors:
def cart_view(request):
try:
cart_id = request.session['cart_id']
cart = Cart.objects.get(id=cart_id)
request.session['total'] = cart.items.count()
print('OLD CART USED')
except:
cart = Cart()
cart.save()
cart_id = cart.id
request.session['cart_id'] = cart_id
cart = Cart.objects.get(id=cart_id)
print('NEW CART CREATED')
return {'cart':cart}
# dropdown menu categories to every page
def categories(request):
print('CATEGORIES CONTEXT PROCCESOR')
categories = Category.objects.all()
return {'dropdown_categories':categories}
Settings:
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
'django.template.context_processors.media',
'shopping.views.cart_view',
'shopping.views.categories',
]
Via those print statements I'm able to see that each one of those CP being executed twice per request, although I'm rendering just base.html
. What may be the problem?
import traceback; traceback.print_stack()
import traceback; traceback.print_stack()
gives this two times:
PS I know that I'm querying the DB every time I use CP, I'll add caching later.
Cosole log(that's one page load):
OLD CART USED
CATEGORIES CONTEXT PROCCESOR
[30/Aug/2018 18:56:13] "GET / HTTP/1.1" 200 2651
OLD CART USED
CATEGORIES CONTEXT PROCCESOR
[30/Aug/2018 18:56:13] "GET / HTTP/1.1" 200 2651
View:
class HomePageView(TemplateView):
template_name = 'base.html'
Project URLs:
urlpatterns = [re_path(r'^',include('shopping.urls',namespace='shop'))]
App's URLs:
urlpatterns = [re_path(r'^$',views.HomePageView.as_view(),name='home')]
Well, I don't what magic is this but the issue of getting two requests per page load had something to do with this line of code in my base.html
:
<img src="#" width="30" height="30" class="d-inline-block align-top" alt="">
As soon as I deleted it, everything started to work normaly...
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.