Add sourcecode for shopping bag bug fix.

Author: AJGreaves

21-shopping-bag-bug-fix/.gitignore

@@ -0,0 +1,6 @@
+.venv
+*sqlite3
+*.pyc
+__pycache__
+env
+env.py

21-shopping-bag-bug-fix/Procfile

@@ -0,0 +1 @@
+web: gunicorn boutique_ado.wsgi:application

21-shopping-bag-bug-fix/README.md

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class BagConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'bag'

21-shopping-bag-bug-fix/bag/__init__.py

@@ -0,0 +1,57 @@
+from decimal import Decimal
+from django.conf import settings
+from django.shortcuts import get_object_or_404
+from products.models import Product
+
+
+def bag_contents(request):
+
+    bag_items = []
+    total = 0
+    product_count = 0
+    bag = request.session.get('bag', {})
+
+    for item_id, item_data in bag.items():
+
+        if isinstance(item_data, int):
+            product = get_object_or_404(Product, pk=item_id)
+            total += item_data * product.price
+            product_count += item_data
+            bag_items.append({
+                'item_id': item_id,
+                'quantity': item_data,
+                'product': product,
+            })
+
+        else:
+            product = get_object_or_404(Product, pk=item_id)
+            for size, quantity in item_data['items_by_size'].items():
+                total += quantity * product.price
+                product_count += quantity
+                bag_items.append({
+                    'item_id': item_id,
+                    'quantity': quantity,
+                    'product': product,
+                    'size': size,
+                })
+
+    if total < settings.FREE_DELIVERY_THRESHOLD:
+        delivery = total * Decimal(settings.STANDARD_DELIVERY_PERCENTAGE / 100)
+        free_delivery_delta = settings.FREE_DELIVERY_THRESHOLD - total
+    else:
+        delivery = 0
+        free_delivery_delta = 0
+
+    grand_total = delivery + total
+
+    context = {
+        'bag_items': bag_items,
+        'total': total,
+        'product_count': product_count,
+        'delivery': delivery,
+        'free_delivery_delta': free_delivery_delta,
+        'free_delivery_threshold': settings.FREE_DELIVERY_THRESHOLD,
+        'grand_total': grand_total,
+    }
+
+    return context

21-shopping-bag-bug-fix/bag/admin.py

@@ -0,0 +1,8 @@
+<h6><strong>Bag Total: ${{ total|floatformat:2 }}</strong></h6>
+<h6>Delivery: ${{ delivery|floatformat:2 }}</h6>
+<h4 class="mt-4"><strong>Grand Total: ${{ grand_total|floatformat:2 }}</strong></h4>
+{% if free_delivery_delta > 0 %}
+    <p class="mb-1 text-danger">
+        You could get free delivery by spending just <strong>${{ free_delivery_delta }}</strong> more!
+    </p>
+{% endif %}