Do not show "View in Studio" links for child verticals of verticals.

STUD-1558

common/djangoapps/xmodule_modifiers.py

@@ -165,7 +165,7 @@ def add_staff_markup(user, block, view, frag, context):  # pylint: disable=unuse
     Does nothing if module is a SequenceModule.
     """
     # TODO: make this more general, eg use an XModule attribute instead
-    if isinstance(block, VerticalModule):
+    if isinstance(block, VerticalModule) and (not context or not context.get('child_of_vertical', False)):
         # check that the course is a mongo backed Studio course before doing work
         is_mongo_course = modulestore().get_modulestore_type(block.course_id) == MONGO_MODULESTORE_TYPE
         is_studio_course = block.course_edit_method == "Studio"

common/lib/xmodule/xmodule/split_test_module.py

@@ -198,7 +198,7 @@ class SplitTestModule(SplitTestFields, XModule):
         conditions for staff.
         """
         # When rendering a Studio preview, render all of the block's children
-        if context and context['runtime_type'] == 'studio':
+        if context and context.get('runtime_type', None) == 'studio':
             return self.studio_preview_view(context)
 
         if self.child is None:

common/lib/xmodule/xmodule/vertical_module.py

@@ -3,6 +3,7 @@ from xmodule.x_module import XModule
 from xmodule.seq_module import SequenceDescriptor
 from xmodule.progress import Progress
 from pkg_resources import resource_string
+from copy import copy
 
 # HACK: This shouldn't be hard-coded to two types
 # OBSOLETE: This obsoletes 'type'
@@ -20,8 +21,11 @@ class VerticalModule(VerticalFields, XModule):
         fragment = Fragment()
         contents = []
 
+        child_context = {} if not context else copy(context)
+        child_context['child_of_vertical'] = True
+
         for child in self.get_display_items():
-            rendered_child = child.render('student_view', context)
+            rendered_child = child.render('student_view', child_context)
             fragment.add_frag_resources(rendered_child)
 
             contents.append({

lms/djangoapps/courseware/tests/test_module_render.py

@@ -536,7 +536,7 @@ class ViewInStudioTest(ModuleStoreTestCase):
             descriptor
         )
 
-        self.module = render.get_module(
+        return render.get_module(
             self.staff_user,
             self.request,
             location,
@@ -554,7 +554,14 @@ class ViewInStudioTest(ModuleStoreTestCase):
             category='vertical',
         )
 
-        self._get_module(course.id, descriptor, descriptor.location)
+        child_descriptor = ItemFactory.create(
+            category='vertical',
+            parent_location = descriptor.location
+        )
+
+        self.module = self._get_module(course.id, descriptor, descriptor.location)
+
+        self.child_module = self._get_module(course.id, child_descriptor, child_descriptor.location)
 
     def setup_xml_course(self):
         """
@@ -565,7 +572,7 @@ class ViewInStudioTest(ModuleStoreTestCase):
         location = Location('i4x', 'edX', 'toy', 'chapter', 'Overview')
         descriptor = modulestore().get_instance(course_id, location)
 
-        self._get_module(course_id, descriptor, location)
+        self.module = self._get_module(course_id, descriptor, location)
 
 
 @override_settings(MODULESTORE=TEST_DATA_MONGO_MODULESTORE)
@@ -581,6 +588,18 @@ class MongoViewInStudioTest(ViewInStudioTest):
         result_fragment = self.module.render('student_view')
         self.assertIn('View Unit in Studio', result_fragment.content)
 
+    def test_view_in_studio_link_only_in_top_level_vertical(self):
+        """Regular Studio courses should not see 'View in Studio' for child verticals of verticals."""
+        self.setup_mongo_course()
+        # Render the parent vertical, then check that there is only a single "View Unit in Studio" link.
+        result_fragment = self.module.render('student_view')
+        # The single "View Unit in Studio" link should appear before the first xmodule vertical definition.
+        parts = result_fragment.content.split('xmodule_VerticalModule')
+        self.assertEqual(3, len(parts), "Did not find two vertical modules")
+        self.assertIn('View Unit in Studio', parts[0])
+        self.assertNotIn('View Unit in Studio', parts[1])
+        self.assertNotIn('View Unit in Studio', parts[2])
+
     def test_view_in_studio_link_xml_authored(self):
         """Courses that change 'course_edit_method' setting can hide 'View in Studio' links."""
         self.setup_mongo_course(course_edit_method='XML')