Added includes_expired parameter to enrollment API

- Adding ?include_expired=1 to course detail requests will now include expired course verifications

common/djangoapps/course_modes/models.py

@@ -166,7 +166,7 @@ class CourseMode(models.Model):
         return [mode.to_tuple() for mode in found_course_modes]
 
     @classmethod
-    def modes_for_course(cls, course_id, only_selectable=True):
+    def modes_for_course(cls, course_id, include_expired=False, only_selectable=True):
         """
         Returns a list of the non-expired modes for a given course id
 
@@ -176,6 +176,9 @@ class CourseMode(models.Model):
             course_id (CourseKey): Search for course modes for this course.
 
         Keyword Arguments:
+            include_expired (bool): If True, expired course modes will be included
+            in the returned JSON data. If False, these modes will be omitted.
+
             only_selectable (bool): If True, include only modes that are shown
                 to users on the track selection page.  (Currently, "credit" modes
                 aren't available to users until they complete the course, so
@@ -186,9 +189,14 @@ class CourseMode(models.Model):
 
         """
         now = datetime.now(pytz.UTC)
-        found_course_modes = cls.objects.filter(
-            Q(course_id=course_id) & (Q(expiration_datetime__isnull=True) | Q(expiration_datetime__gte=now))
-        )
+
+        found_course_modes = cls.objects.filter(course_id=course_id)
+
+        # Filter out expired course modes if include_expired is not set
+        if not include_expired:
+            found_course_modes = found_course_modes.filter(
+                Q(expiration_datetime__isnull=True) | Q(expiration_datetime__gte=now)
+            )
 
         # Credit course modes are currently not shown on the track selection page;
         # they're available only when students complete a course.  For this reason,

common/djangoapps/enrollment/api.py

@@ -235,7 +235,7 @@ def update_enrollment(user_id, course_id, mode=None, is_active=None):
     return enrollment
 
 
-def get_course_enrollment_details(course_id):
+def get_course_enrollment_details(course_id, include_expired=False):
     """Get the course modes for course. Also get enrollment start and end date, invite only, etc.
 
     Given a course_id, return a serializable dictionary of properties describing course enrollment information.
@@ -243,6 +243,9 @@ def get_course_enrollment_details(course_id):
     Args:
         course_id (str): The Course to get enrollment information for.
 
+        include_expired (bool): Boolean denoting whether expired course modes
+        should be included in the returned JSON data.
+
     Returns:
         A serializable dictionary of course enrollment information.
 
@@ -270,8 +273,10 @@ def get_course_enrollment_details(course_id):
         }
 
     """
-    cache_key = u"enrollment.course.details.{course_id}".format(course_id=course_id)
-
+    cache_key = u'enrollment.course.details.{course_id}.{include_expired}'.format(
+        course_id=course_id,
+        include_expired=include_expired
+    )
     cached_enrollment_data = None
     try:
         cached_enrollment_data = cache.get(cache_key)
@@ -283,7 +288,7 @@ def get_course_enrollment_details(course_id):
         log.info(u"Get enrollment data for course %s (cached)", course_id)
         return cached_enrollment_data
 
-    course_enrollment_details = _data_api().get_course_enrollment_info(course_id)
+    course_enrollment_details = _data_api().get_course_enrollment_info(course_id, include_expired)
 
     try:
         cache_time_out = getattr(settings, 'ENROLLMENT_COURSE_DETAILS_CACHE_TIMEOUT', 60)

common/djangoapps/enrollment/data.py

@@ -142,7 +142,7 @@ def _update_enrollment(enrollment, is_active=None, mode=None):
     return CourseEnrollmentSerializer(enrollment).data  # pylint: disable=no-member
 
 
-def get_course_enrollment_info(course_id):
+def get_course_enrollment_info(course_id, include_expired=False):
     """Returns all course enrollment information for the given course.
 
     Based on the course id, return all related course information..
@@ -150,6 +150,9 @@ def get_course_enrollment_info(course_id):
     Args:
         course_id (str): The course to retrieve enrollment information for.
 
+        include_expired (bool): Boolean denoting whether expired course modes
+        should be included in the returned JSON data.
+
     Returns:
         A serializable dictionary representing the course's enrollment information.
 
@@ -163,4 +166,4 @@ def get_course_enrollment_info(course_id):
         msg = u"Requested enrollment information for unknown course {course}".format(course=course_id)
         log.warning(msg)
         raise CourseNotFoundError(msg)
-    return CourseField().to_native(course)
+    return CourseField().to_native(course, include_expired=include_expired)

common/djangoapps/enrollment/serializers.py

@@ -38,10 +38,10 @@ class CourseField(serializers.RelatedField):
 
     """
 
-    def to_native(self, course):
+    def to_native(self, course, **kwargs):
         course_id = unicode(course.id)
         course_modes = ModeSerializer(
-            CourseMode.modes_for_course(course.id, only_selectable=False)
+            CourseMode.modes_for_course(course.id, kwargs.get('include_expired', False), only_selectable=False)
         ).data  # pylint: disable=no-member
 
         return {
@@ -94,7 +94,7 @@ class CourseEnrollmentSerializer(serializers.ModelSerializer):
         """Retrieves the username from the associated model."""
         return model.username
 
-    class Meta:  # pylint: disable=missing-docstring
+    class Meta(object):  # pylint: disable=missing-docstring
         model = CourseEnrollment
         fields = ('created', 'mode', 'is_active', 'course_details', 'user')
         lookup_field = 'username'

common/djangoapps/enrollment/tests/fake_data_api.py

@@ -46,7 +46,7 @@ def update_course_enrollment(student_id, course_id, mode=None, is_active=None):
     return enrollment
 
 
-def get_course_enrollment_info(course_id):
+def get_course_enrollment_info(course_id, include_expired=False):
     """Stubbed out Enrollment data request."""
     return _get_fake_course_info(course_id)
 

common/djangoapps/enrollment/tests/test_views.py

@@ -476,6 +476,40 @@ class EnrollmentTest(EnrollmentTestMixin, ModuleStoreTestCase, APITestCase):
         self.assertTrue(is_active)
         self.assertEqual(course_mode, 'professional')
 
+    def test_enrollment_includes_expired_verified(self):
+        """With the right API key, request that expired course verifications are still returned. """
+        # Create a honor mode for a course.
+        CourseModeFactory.create(
+            course_id=self.course.id,
+            mode_slug=CourseMode.HONOR,
+            mode_display_name=CourseMode.HONOR,
+        )
+
+        # Create a verified mode for a course.
+        CourseModeFactory.create(
+            course_id=self.course.id,
+            mode_slug=CourseMode.VERIFIED,
+            mode_display_name=CourseMode.VERIFIED,
+            expiration_datetime='1970-01-01 05:00:00'
+        )
+
+        # Passes the include_expired parameter to the API call
+        v_response = self.client.get(
+            reverse('courseenrollmentdetails', kwargs={"course_id": unicode(self.course.id)}), {'include_expired': True}
+        )
+        v_data = json.loads(v_response.content)
+
+        # Ensure that both course modes are returned
+        self.assertEqual(len(v_data['course_modes']), 2)
+
+        # Omits the include_expired parameter from the API call
+        h_response = self.client.get(reverse('courseenrollmentdetails', kwargs={"course_id": unicode(self.course.id)}))
+        h_data = json.loads(h_response.content)
+
+        # Ensure that only one course mode is returned and that it is honor
+        self.assertEqual(len(h_data['course_modes']), 1)
+        self.assertEqual(h_data['course_modes'][0]['slug'], CourseMode.HONOR)
+
     def test_update_enrollment_with_mode(self):
         """With the right API key, update an existing enrollment with a new mode. """
         # Create an honor and verified mode for a course. This allows an update.

common/djangoapps/enrollment/views.py

@@ -163,12 +163,17 @@ class EnrollmentCourseDetailView(APIView):
 
             Get enrollment details for a course.
 
+            Response values include the course schedule and enrollment modes supported by the course.
+            Use the parameter include_expired=1 to include expired enrollment modes in the response.
+
             **Note:** Getting enrollment details for a course does not require authentication.
 
         **Example Requests**:
 
             GET /api/enrollment/v1/course/{course_id}
 
+            GET /api/v1/enrollment/course/{course_id}?include_expired=1
+
 
         **Response Values**
 
@@ -184,7 +189,10 @@ class EnrollmentCourseDetailView(APIView):
 
                 * course_end: The date and time at which the course closes.  If null, the course never ends.
 
-                * course_modes: An array of data about the enrollment modes supported for the course. Each enrollment mode collection includes:
+                * course_modes: An array containing details about the enrollment modes supported for the course.
+                If the request uses the parameter include_expired=1, the array also includes expired enrollment modes.
+
+                  Each enrollment mode collection includes:
 
                         * slug: The short name for the enrollment mode.
                         * name: The full name of the enrollment mode.
@@ -217,7 +225,7 @@ class EnrollmentCourseDetailView(APIView):
 
         """
         try:
-            return Response(api.get_course_enrollment_details(course_id))
+            return Response(api.get_course_enrollment_details(course_id, bool(request.GET.get('include_expired', ''))))
         except CourseNotFoundError:
             return Response(
                 status=status.HTTP_400_BAD_REQUEST,

common/djangoapps/student/tests/factories.py

@@ -53,6 +53,7 @@ class CourseModeFactory(DjangoModelFactory):
     min_price = 0
     suggested_prices = ''
     currency = 'usd'
+    expiration_datetime = None
 
 
 class RegistrationFactory(DjangoModelFactory):

common/test/acceptance/tests/discussion/test_discussion.py

@@ -6,6 +6,7 @@ import datetime
 from pytz import UTC
 from uuid import uuid4
 from nose.plugins.attrib import attr
+from flaky import flaky
 
 from .helpers import BaseDiscussionTestCase
 from ..helpers import UniqueCourseTest
@@ -217,6 +218,7 @@ class DiscussionTabSingleThreadTest(BaseDiscussionTestCase, DiscussionResponsePa
         self.thread_page = self.create_single_thread_page(thread_id)  # pylint: disable=attribute-defined-outside-init
         self.thread_page.visit()
 
+    @flaky  # TODO fix this, see TNL-2419
     def test_mathjax_rendering(self):
         thread_id = "test_thread_{}".format(uuid4().hex)
 

common/test/acceptance/tests/studio/test_studio_library.py

@@ -4,6 +4,7 @@ Acceptance tests for Content Libraries in Studio
 from ddt import ddt, data
 from unittest import skip
 from nose.plugins.attrib import attr
+from flaky import flaky
 
 from .base_studio_test import StudioLibraryTest
 from ...fixtures.course import XBlockFixtureDesc
@@ -129,6 +130,7 @@ class LibraryEditPageTest(StudioLibraryTest):
         """
         self.assertFalse(self.browser.find_elements_by_css_selector('span.large-discussion-icon'))
 
+    @flaky  # TODO fix this, see TNL-2322
     def test_library_pagination(self):
         """
         Scenario: Ensure that adding several XBlocks to a library results in pagination.