Added Payment Cancellation Page

This commit creates a new page intended only for use when the user cancels payment. The previous implementation relied on the CyberSource callback page, which is not useful for orders placed with the E-Commerce Service.

lms/djangoapps/commerce/urls.py

@@ -4,9 +4,10 @@ Defines the URL routes for this app.
 
 from django.conf.urls import patterns, url
 
-from .views import OrdersView
+from .views import OrdersView, checkout_cancel
 
 urlpatterns = patterns(
     '',
     url(r'^orders/$', OrdersView.as_view(), name="orders"),
+    url(r'^checkout/cancel/$', checkout_cancel, name="checkout_cancel"),
 )

lms/djangoapps/commerce/views.py

 """ Commerce views. """
 import logging
 
+from django.conf import settings
+from django.views.decorators.cache import cache_page
+
 from opaque_keys import InvalidKeyError
 from opaque_keys.edx.keys import CourseKey
 from rest_framework.permissions import IsAuthenticated
@@ -13,7 +16,9 @@ from commerce.exceptions import ApiError, InvalidConfigurationError
 from commerce.http import DetailResponse, InternalRequestErrorResponse
 from course_modes.models import CourseMode
 from courseware import courses
+from edxmako.shortcuts import render_to_response
 from enrollment.api import add_enrollment
+from microsite_configuration import microsite
 from student.models import CourseEnrollment
 from openedx.core.lib.api.authentication import SessionAuthenticationAllowInactiveUser
 
@@ -123,3 +128,10 @@ class OrdersView(APIView):
         except ApiError as err:
             # The API will handle logging of the error.
             return InternalRequestErrorResponse(err.message)
+
+
+@cache_page(1800)
+def checkout_cancel(_request):
+    """ Checkout/payment cancellation view. """
+    context = {'payment_support_email': microsite.get_value('payment_support_email', settings.PAYMENT_SUPPORT_EMAIL)}
+    return render_to_response("commerce/checkout_cancel.html", context)

lms/templates/commerce/checkout_cancel.html

+<%! from django.utils.translation import ugettext as _ %>
+
+<%inherit file="../main.html" />
+
+<%block name="pagetitle">${_("Checkout Cancelled")}</%block>
+
+
+<section class="container">
+    <h1>${_("Checkout Cancelled")}</h1>
+    ${ _(u"Your transaction has been cancelled. If you feel an error has occurred, contact {email}.").format(
+    email="<a href=\"mailto:{email}\">{email}</a>".format(email=payment_support_email)) }
+</section>