first commit

tienda/context_processors.py

@@ -0,0 +1,22 @@
+from .models import Cart
+
+def cart_context(request):
+    """Context processor para hacer el carrito disponible en todas las plantillas"""
+    cart_count = 0
+    
+    if request.user.is_authenticated:
+        try:
+            cart = Cart.objects.get(user=request.user)
+            cart_count = cart.get_items_count()
+        except Cart.DoesNotExist:
+            cart_count = 0
+    elif request.session.session_key:
+        try:
+            cart = Cart.objects.get(session_key=request.session.session_key)
+            cart_count = cart.get_items_count()
+        except Cart.DoesNotExist:
+            cart_count = 0
+    
+    return {
+        'cart_count': cart_count
+    }