Otimizando as views transformando-as em classes como o metodo ListView

Author: Ruyb-git

catalog/views.py

@@ -1,20 +1,39 @@
-from django.shortcuts import render
+from django.shortcuts import render, get_object_or_404
+from django.views import generic
 
 from .models import Product, Category
 
-def product_list(request):
-	context = {
-		'product_list': Product.objects.all()
-	}
-	return render(request, 'catalog/product_list.html',context)
+class ProductListView(generic.ListView):
 
-def category(request, slug):
-	category = Category.objects.get(slug = slug)
-	context = {
-		'current_category': category,
-		'product_list': Product.objects.filter(category = category),
-	}
-	return render(request, 'catalog/category.html',context)
+	model = Product
+	template_name = 'catalog/product_list.html'
+
+product_list = ProductListView.as_view()
+
+
+class CategoryListView(generic.ListView):
+
+	template_name = 'catalog/category.html'
+	context_object_name = 'product_list'
+
+	def get_queryset(self):
+		return Product.objects.filter(category__slug = self.kwargs['slug'])
+
+	def get_context_data(self, **kwargs):
+		context = super(CategoryListView, self).get_context_data(**kwargs)
+		context['current_category'] = get_object_or_404(Category, slug = self.kwargs['slug'])
+		return context
+
+category = CategoryListView.as_view()
+
+#-------------------------------------------------Maneira tradicional
+# def category(request, slug):
+# 	category = Category.objects.get(slug = slug)
+# 	context = {
+# 		'current_category': category,
+# 		'product_list': Product.objects.filter(category = category),
+# 	}
+# 	return render(request, 'catalog/category.html',context)
 
 
 def product(request, slug):

core/__pycache__/views.cpython-36.pyc

@@ -4,13 +4,15 @@
 from django.http import HttpResponse
 from django.core.mail import send_mail
 from django.conf import settings 
+from django.views.generic import View,TemplateView
 
 from .forms import ContactForm
 
+class IndexView(TemplateView):
 
-def index(request):
-	return render(request, 'index.html')
-
+	template_name = 'index.html'
+	
+index = IndexView.as_view()
 
 def contact(request):
 	success = False