Stripe: Fix CardError handling when subscribing

payments/backends/stripe.py

@@ -170,6 +170,10 @@ class StripeBackend(BackendBase):
             )
         except self.stripe.error.InvalidRequestError:
             return
+        except self.stripe.CardError as e:
+            subscr.status = 'error'
+            subscr.backend_data['stripe_error'] = e.json_body['error']['message']
+            return
 
         try:
             if subscr.status == 'new':

payments/views.py

@@ -126,6 +126,12 @@ def callback_stripe_subscr(request, id):
 
     p = Subscription.objects.get(id=id)
     BACKENDS['stripe'].callback_subscr(p, request)
+    if p.status == 'error' or p.status == 'cancelled':
+        messages.add_message(request, messages.ERROR,
+                             _("Error subscribing. It usually means you don't"
+                               " have enough money available."))
+    else:
+        messages.add_message(request, messages.INFO, _("Subscribed!"))
     return redirect(reverse('account:index'))