Ability to set HOMEPAGE_COURSE_MAX via SiteConfiguration.

The setting controls the number of courses displayed on the homepage.

common/djangoapps/student/views.py

@@ -201,6 +201,11 @@ def index(request, extra_context=None, user=AnonymousUser()):
     # 1) Change False to True
     context['show_homepage_promo_video'] = configuration_helpers.get_value('show_homepage_promo_video', False)
 
+    # Maximum number of courses to display on the homepage.
+    context['homepage_course_max'] = configuration_helpers.get_value(
+        'HOMEPAGE_COURSE_MAX', settings.HOMEPAGE_COURSE_MAX
+    )
+
     # 2) Add your video's YouTube ID (11 chars, eg "123456789xX"), or specify via site configuration
     # Note: This value should be moved into a configuration setting and plumbed-through to the
     # context via the site configuration workflow, versus living here

lms/djangoapps/courseware/tests/test_microsites.py

 """
-Tests related to the Site COnfiguration feature
+Tests related to the Site Configuration feature
 """
+from bs4 import BeautifulSoup
+from contextlib import contextmanager
 from django.conf import settings
 from django.core.urlresolvers import reverse
 from django.test.utils import override_settings
+from mock import patch
 from nose.plugins.attrib import attr
 
 from course_modes.models import CourseMode
@@ -130,6 +133,72 @@ class TestSites(SharedModuleStoreTestCase, LoginEnrollmentTestCase):
         self.assertNotContains(resp, 'This is a Test Site footer')
 
     @override_settings(SITE_NAME=settings.MICROSITE_TEST_HOSTNAME)
+    def test_site_homepage_course_max(self):
+        """
+        Verify that the number of courses displayed on the homepage honors
+        the HOMEPAGE_COURSE_MAX setting.
+        """
+        @contextmanager
+        def homepage_course_max_site_config(limit):
+            """Temporarily set the microsite HOMEPAGE_COURSE_MAX setting to desired value."""
+            with patch.dict(settings.MICROSITE_CONFIGURATION, {
+                'test_site': dict(
+                    settings.MICROSITE_CONFIGURATION['test_site'],
+                    HOMEPAGE_COURSE_MAX=limit,
+                )
+            }):
+                yield
+
+        def assert_displayed_course_count(response, expected_count):
+            """Assert that the number of courses displayed matches the expectation."""
+            soup = BeautifulSoup(response.content, 'html.parser')
+            courses = soup.find_all(class_='course')
+            self.assertEqual(len(courses), expected_count)
+
+        # By default the number of courses on the homepage is not limited.
+        # We should see both courses and no link to all courses.
+        resp = self.client.get('/', HTTP_HOST=settings.MICROSITE_TEST_HOSTNAME)
+        self.assertEqual(resp.status_code, 200)
+        assert_displayed_course_count(resp, 2)
+        self.assertNotContains(resp, 'View all Courses')
+
+        # With the limit set to 5, we should still see both courses and no link to all courses.
+        with homepage_course_max_site_config(5):
+            resp = self.client.get('/', HTTP_HOST=settings.MICROSITE_TEST_HOSTNAME)
+            self.assertEqual(resp.status_code, 200)
+            assert_displayed_course_count(resp, 2)
+            self.assertNotContains(resp, 'View all Courses')
+
+        # With the limit set to 2, we should still see both courses and no link to all courses.
+        with homepage_course_max_site_config(2):
+            resp = self.client.get('/', HTTP_HOST=settings.MICROSITE_TEST_HOSTNAME)
+            self.assertEqual(resp.status_code, 200)
+            assert_displayed_course_count(resp, 2)
+            self.assertNotContains(resp, 'View all Courses')
+
+        # With the limit set to 1, we should only see one course.
+        # We should also see the link to all courses.
+        with homepage_course_max_site_config(1):
+            resp = self.client.get('/', HTTP_HOST=settings.MICROSITE_TEST_HOSTNAME)
+            self.assertEqual(resp.status_code, 200)
+            assert_displayed_course_count(resp, 1)
+            self.assertContains(resp, 'View all Courses')
+
+        # If no site configuration is set, the limit falls back to settings.HOMEPAGE_COURSE_MAX.
+        with override_settings(HOMEPAGE_COURSE_MAX=1):
+            resp = self.client.get('/', HTTP_HOST=settings.MICROSITE_TEST_HOSTNAME)
+            self.assertEqual(resp.status_code, 200)
+            assert_displayed_course_count(resp, 1)
+            self.assertContains(resp, 'View all Courses')
+
+        # Site configuration takes precedence over settings when both are set.
+        with homepage_course_max_site_config(2), override_settings(HOMEPAGE_COURSE_MAX=1):
+            resp = self.client.get('/', HTTP_HOST=settings.MICROSITE_TEST_HOSTNAME)
+            self.assertEqual(resp.status_code, 200)
+            assert_displayed_course_count(resp, 2)
+            self.assertNotContains(resp, 'View all Courses')
+
+    @override_settings(SITE_NAME=settings.MICROSITE_TEST_HOSTNAME)
     def test_site_anonymous_copyright_content(self):
         """
         Verify that the copyright, when accessed via a Site domain, returns

lms/templates/courses_list.html

@@ -9,7 +9,7 @@
       <section class="courses">
         <ul class="courses-listing">
           ## limiting the course number by using HOMEPAGE_COURSE_MAX as the maximum number of courses
-          %for course in courses[:settings.HOMEPAGE_COURSE_MAX]:
+          %for course in courses[:homepage_course_max]:
           <li class="courses-listing-item">
               <%include file="course.html" args="course=course" />
           </li>
@@ -17,7 +17,7 @@
         </ul>
       </section>
     ## in case there are courses that are not shown on the homepage, a 'View all Courses' link should appear
-      % if settings.HOMEPAGE_COURSE_MAX and len(courses) > settings.HOMEPAGE_COURSE_MAX:
+      % if homepage_course_max and len(courses) > homepage_course_max:
       <div class="courses-more">
         <a class="courses-more-cta" href="${marketing_link('COURSES')}"> ${_("View all Courses")} </a>
       </div>