MA-345 Mobile Enrollment API: add course' Facebook URL

cms/djangoapps/models/settings/course_metadata.py

@@ -64,6 +64,10 @@ class CourseMetadata(object):
         if not settings.FEATURES.get('ENABLE_VIDEO_UPLOAD_PIPELINE'):
             filtered_list.append('video_upload_pipeline')
 
+        # Do not show facebook_url if the feature is disabled.
+        if not settings.FEATURES.get('ENABLE_MOBILE_SOCIAL_FACEBOOK_FEATURES'):
+            filtered_list.append('facebook_url')
+
         return filtered_list
 
     @classmethod

common/lib/xmodule/xmodule/course_module.py

@@ -335,6 +335,15 @@ class CourseFields(object):
         help=_("Enter the unique identifier for your course's video files provided by edX."),
         scope=Scope.settings
     )
+    facebook_url = String(
+        help=_(
+            "Enter the URL for the official course Facebook group. "
+            "If you provide a URL, the mobile app includes a button that students can tap to access the group."
+        ),
+        default=None,
+        display_name=_("Facebook URL"),
+        scope=Scope.settings
+    )
     no_grade = Boolean(
         display_name=_("Course Not Graded"),
         help=_("Enter true or false. If true, the course will not be graded."),

lms/djangoapps/mobile_api/users/serializers.py

@@ -50,6 +50,9 @@ class CourseField(serializers.RelatedField):
             "start": course.start,
             "end": course.end,
             "course_image": course_image_url(course),
+            "social_urls": {
+                "facebook": course.facebook_url,
+            },
             "latest_updates": {
                 "video": None
             },

lms/djangoapps/mobile_api/users/tests.py

@@ -5,7 +5,6 @@ import datetime
 from django.utils import timezone
 
 from xmodule.modulestore.tests.factories import ItemFactory, CourseFactory
-from xmodule.modulestore.django import modulestore
 from student.models import CourseEnrollment
 from certificates.models import CertificateStatuses
 from certificates.tests.factories import GeneratedCertificateFactory
@@ -107,6 +106,23 @@ class TestUserEnrollmentApi(MobileAPITestCase, MobileAuthUserTestMixin, MobileEn
         certificate_data = response.data[0]['certificate']  # pylint: disable=no-member
         self.assertEquals(certificate_data['url'], certificate_url)
 
+    def test_no_facebook_url(self):
+        self.login_and_enroll()
+
+        response = self.api_response()
+        course_data = response.data[0]['course']  # pylint: disable=no-member
+        self.assertIsNone(course_data['social_urls']['facebook'])
+
+    def test_facebook_url(self):
+        self.login_and_enroll()
+
+        self.course.facebook_url = "http://facebook.com/test_group_page"
+        self.store.update_item(self.course, self.user.id)
+
+        response = self.api_response()
+        course_data = response.data[0]['course']  # pylint: disable=no-member
+        self.assertEquals(course_data['social_urls']['facebook'], self.course.facebook_url)
+
 
 class CourseStatusAPITestCase(MobileAPITestCase):
     """
@@ -280,7 +296,7 @@ class TestCourseEnrollmentSerializer(MobileAPITestCase):
 
         self.course.display_coursenumber = "overridden_number"
         self.course.display_organization = "overridden_org"
-        modulestore().update_item(self.course, self.user.id)
+        self.store.update_item(self.course, self.user.id)
 
         serialized = CourseEnrollmentSerializer(CourseEnrollment.enrollments_for_user(self.user)[0]).data  # pylint: disable=no-member
         self.assertEqual(serialized['course']['number'], self.course.display_coursenumber)