Python-сообщество

 from django.views.generic import TemplateView
from django.views.generic.detail import DetailView
from .models import Category, Good
from django.core.paginator import Paginator, InvalidPage
class GoodListView(TemplateView):
	template_name = 'index.html'
	def get_context_data(self, **kwargs):
		context = super(GoodListView, self).get_context_data(**kwargs)
		page_num = self.request.GET.get('page',1)
		context['cats'] = Category.objects.order_by('name')
		if kwargs['cat_id'] == None:
			context['category'] = Category.objects.first()
		else:
			context['category'] = Category.objects.get(pk = kwargs['cat_id'])
		paginator = Paginator(Good.objects.filter(category = context['category']).order_by('name'),1)
		try:
			context['goods'] = paginator.page(page_num)
		except InvalidPage:
			context['goods']  = paginator.page(1)
		return context
class GoodDetailView(DetailView):
	template_name = 'good.html'
	model = 'Good'
	pk_url_kwarg = 'good_id'
	def get_context_data(self, **kwargs):
		context = super(GoodDetailView, self).get_context_data(**kwargs)
		context['pn'] = self.request.GET.get('page',1)
		context['cats'] = Category.objects.order_by('name')
		return context

 from django.urls import path
from . import views
from .twviews import GoodListView, GoodDetailView 
urlpatterns = [
    path('<int:cat_id>/', GoodListView.as_view(), name = 'index'),
    path('good/<int:good_id>/', GoodDetailView.as_view(), name = 'good')
]