feat: added tests for cart views

web/components/views.py

@@ -1,7 +1,10 @@
+from django.shortcuts import render
 from django.views.generic import TemplateView
 from shop.filters import ProductFilter
-from shop.models import Product
-from web.mixins import FilteredQuerysetMixin, PaginatedQuerysetMixin, CartMixin
+from shop.models import Product, Cart
+from web.mixins import FilteredQuerysetMixin, PaginatedQuerysetMixin
+from web.settings import ANONYMOUS_CART_ID_COOKIE_NAME
+from web.utils import get_or_create_cart
 
 
 class ListProducts(TemplateView, FilteredQuerysetMixin, PaginatedQuerysetMixin):
@@ -20,16 +23,16 @@ class ListProducts(TemplateView, FilteredQuerysetMixin, PaginatedQuerysetMixin):
         }
 
 
-class CartDropdown(TemplateView, CartMixin):
-    template_name = "components/cart/cart_navbar.html"
+def cart_dropdown(request, *args, **kwargs):
+    cart, created = get_or_create_cart(request)
 
-    def get_context_data(self, **kwargs):
-        cart = self.get_cart()
+    response = render(request, "components/cart/cart_navbar.html", context={
+        "cart": cart,
+    })
 
-        return {
-            "cart": cart,
-        }
+    if not request.user.is_authenticated:
+        response.set_cookie(ANONYMOUS_CART_ID_COOKIE_NAME, cart.uuid)
+    return response
 
 
 list_products = ListProducts.as_view()
-cart_dropdown = CartDropdown.as_view()

web/mixins.py

@@ -28,13 +28,3 @@ class PaginatedQuerysetMixin:
         page = self.request.GET.get("page", 1)
         qs = paginator.get_page(page)
         return qs
-
-
-class CartMixin:
-    def get_cart(self):
-        if not self.request.user.is_authenticated:
-            uid = self.request.COOKIES.get(ANONYMOUS_CART_ID_COOKIE_NAME)
-            cart = Cart.objects.get(uuid=uid)
-        else:
-            cart = Cart.objects.filter(user=self.request.user).first()
-        return cart

web/tests/test_components.py

@@ -1,3 +1,4 @@
+from django.contrib.auth.models import User
 from django.test import TestCase
 from django.urls import reverse
 

web/utils.py

@@ -9,3 +9,19 @@ def get_cart(request):
     else:
         cart = Cart.objects.filter(user=request.user).first()
     return cart
+
+
+def get_or_create_cart(request):
+    created = False
+    if not request.user.is_authenticated:
+        uid = request.COOKIES.get(ANONYMOUS_CART_ID_COOKIE_NAME)
+
+        if uid:
+            cart = Cart.objects.get(uuid=uid)
+        else:
+            cart = Cart.objects.create(user=None)
+            created = True
+    else:
+        cart, created = Cart.objects.get_or_create(user=request.user)
+
+    return cart, created

web/views.py

@@ -4,7 +4,7 @@ from django.http.response import HttpResponse
 from django.views.decorators.http import require_http_methods
 
 from shop.models import Product, Cart, CartItem
-from web.utils import get_cart
+from web.utils import get_cart, get_or_create_cart
 from web.settings import ANONYMOUS_CART_ID_COOKIE_NAME
 
 
@@ -38,21 +38,20 @@ class ProductDetail(TemplateView):
 )
 def add_cart_item(request, *args, **kwargs):
     product = get_object_or_404(Product, pk=request.POST.get("product"))
+    cart, created = get_or_create_cart(request)
     response = HttpResponse(status=201, headers={'HX-Trigger': 'updated-cart'})
 
-    if not request.user.is_authenticated:
-        cart = Cart.objects.create(
-            user=None,
-        )
-    else:
-        cart, created = Cart.objects.get_or_create(user=request.user)
+    if created and request.user.is_anonymous:
         response.set_cookie(ANONYMOUS_CART_ID_COOKIE_NAME, cart.uuid)
 
+    # Comprobamos si existe una línea de carrito para ese carrito de ese producto
     existing_cart_item = CartItem.objects.filter(cart=cart, product=product).first()
 
+    # Si existe, simplemente le sumamos la cantidad a la línea ya existente
     if existing_cart_item is not None:
         existing_cart_item.quantity += int(request.POST.get("quantity"))
         existing_cart_item.save()
+    # Si no, lo creamos
     else:
         CartItem.objects.create(
             cart=cart,
@@ -69,7 +68,7 @@ def add_cart_item(request, *args, **kwargs):
     ]
 )
 def delete_cart_item(request, pk, *args, **kwargs):
-    cart = get_cart(request)
+    cart = get_or_create_cart(request)
     cart_item = get_object_or_404(CartItem, pk=pk, cart=cart)
     cart_item.delete()
     return HttpResponse(status=204, headers={'HX-Trigger': 'updated-cart'})