Update USPS shipping handling

src/storefront/cart.py

@@ -115,17 +115,21 @@ class Cart:
             return ShippingContainer.VARIABLE
 
     def get_shipping_cost(self):
-        if len(self) > 0:
+        if len(self) > 0 and self.session.get("shipping_address"):
-            usps_rate_request = self.build_usps_rate_request()
+            try:
+                usps_rate_request = self.build_usps_rate_request()
+            except TypeError as e:
+                return Decimal('0.00')
             usps = USPSApiWithRate(settings.USPS_USER_ID, test=True)
             validation = usps.get_rate(usps_rate_request)
             logger.info(validation.result)
             try:
-                rate = Decimal(validation.result['RateV4Response']['Package']['Postage']['CommercialRate'])
+                rate = validation.result['RateV4Response']['Package']['Postage']['CommercialRate']
-                return rate
+                rate = '0.00'
             except KeyError as e:
                 raise e("USPS Result has no 'Postage'")
-                return Decimal('0.00')
+                rate = '0.00'
+            return Decimal(rate)
         else:
             return Decimal('0.00')
 

src/storefront/templates/storefront/cart_detail.html

@@ -16,7 +16,7 @@
                 </figure>
                 <div class="item__info">
                     <h4>{{product.name}}</h4>
-                    <p><strong>Grind</strong>: {{item.grind}}</p>
+                    <p><strong>Grind</strong>:</p>
                     {% for key, value in item.variations.items %}
                         <p><strong>{{key}}</strong><br>
                             <form class="item__form" action="{% url 'storefront:cart-update' product.pk key %}" method="POST">

src/storefront/views.py

@@ -7,7 +7,7 @@ from django.shortcuts import render, reverse, redirect, get_object_or_404
 from django.urls import reverse_lazy
 from django.core.mail import EmailMessage
 from django.core.exceptions import ObjectDoesNotExist
-from django.http import JsonResponse
+from django.http import JsonResponse, HttpResponseRedirect
 from django.views.generic.base import RedirectView, TemplateView
 from django.views.generic.edit import FormView, CreateView, UpdateView, DeleteView, FormMixin
 from django.views.generic.detail import DetailView, SingleObjectMixin
@@ -15,6 +15,7 @@ from django.views.generic.list import ListView
 from django.contrib.auth.decorators import login_required
 from django.contrib.auth.mixins import LoginRequiredMixin, UserPassesTestMixin
 from django.contrib.messages.views import SuccessMessageMixin
+from django.contrib import messages
 from django.views.decorators.csrf import csrf_exempt
 from django.views.decorators.http import require_POST
 from django.forms.models import model_to_dict
@@ -193,13 +194,25 @@ class OrderCreateView(CreateView):
     form_class = OrderCreateForm
     success_url = reverse_lazy('storefront:payment-done')
 
+    def get(self, request, *args, **kwargs):
+        if not self.request.session.get("shipping_address"):
+            messages.warning(request, 'Please add a shipping address.')
+            return HttpResponseRedirect(reverse('storefront:checkout-address'))
+        else:
+            return super().get(request, *args, **kwargs)
+
     def get_initial(self):
         cart = Cart(self.request)
+        try:
+            shipping_cost = cart.get_shipping_cost()
+        except Exception as e:
+            raise e('Could not get shipping information')
+            shipping_cost = Decimal('0.00')
+
         initial = {
             'total_net_amount': cart.get_total_price(),
-            'shipping_total': cart.get_shipping_cost()
+            'shipping_total': shipping_cost
         }
-
         if self.request.session.get('shipping_address'):
             a = self.request.session.get('shipping_address')
             user_info = {