Removed the ability to add Discussion and advanced components to Content Libraries.

cms/djangoapps/contentstore/views/component.py

@@ -217,9 +217,9 @@ def container_handler(request, usage_key_string):
         return HttpResponseBadRequest("Only supports HTML requests")
 
 
-def get_component_templates(course):
+def get_component_templates(courselike, library=False):
     """
-    Returns the applicable component templates that can be used by the specified course.
+    Returns the applicable component templates that can be used by the specified course or library.
     """
     def create_template_dict(name, cat, boilerplate_name=None, is_common=False):
         """
@@ -250,7 +250,13 @@ def get_component_templates(course):
     categories = set()
     # The component_templates array is in the order of "advanced" (if present), followed
     # by the components in the order listed in COMPONENT_TYPES.
-    for category in COMPONENT_TYPES:
+    component_types = COMPONENT_TYPES[:]
+
+    # Libraries do not support discussions
+    if library:
+        component_types = [component for component in component_types if component != 'discussion']
+
+    for category in component_types:
         templates_for_category = []
         component_class = _load_mixed_class(category)
         # add the default template with localized display name
@@ -264,7 +270,7 @@ def get_component_templates(course):
         if hasattr(component_class, 'templates'):
             for template in component_class.templates():
                 filter_templates = getattr(component_class, 'filter_templates', None)
-                if not filter_templates or filter_templates(template, course):
+                if not filter_templates or filter_templates(template, courselike):
                     templates_for_category.append(
                         create_template_dict(
                             _(template['metadata'].get('display_name')),
@@ -289,11 +295,15 @@ def get_component_templates(course):
             "display_name": component_display_names[category]
         })
 
+    # Libraries do not support advanced components at this time.
+    if library:
+        return component_templates
+
     # Check if there are any advanced modules specified in the course policy.
     # These modules should be specified as a list of strings, where the strings
     # are the names of the modules in ADVANCED_COMPONENT_TYPES that should be
     # enabled for the course.
-    course_advanced_keys = course.advanced_modules
+    course_advanced_keys = courselike.advanced_modules
     advanced_component_templates = {"type": "advanced", "templates": [], "display_name": _("Advanced")}
     advanced_component_types = _advanced_component_types()
     # Set component types according to course policy file

cms/djangoapps/contentstore/views/item.py

@@ -460,6 +460,13 @@ def _create_item(request):
     if not has_course_author_access(request.user, usage_key.course_key):
         raise PermissionDenied()
 
+    if isinstance(usage_key, LibraryUsageLocator):
+        # Only these categories are supported at this time.
+        if category not in ['html', 'problem', 'video']:
+            return HttpResponseBadRequest(
+                "Category '%s' not supported for Libraries" % category, content_type='text/plain'
+            )
+
     store = modulestore()
     with store.bulk_operations(usage_key.course_key):
         parent = store.get_item(usage_key)

cms/djangoapps/contentstore/views/library.py

@@ -175,7 +175,7 @@ def library_blocks_view(library, response_format):
         })
 
     xblock_info = create_xblock_info(library, include_ancestor_info=False, graders=[])
-    component_templates = get_component_templates(library)
+    component_templates = get_component_templates(library, library=True)
 
     return render_to_response('library.html', {
         'context_library': library,

cms/djangoapps/contentstore/views/tests/test_item.py

@@ -1469,6 +1469,41 @@ class TestLibraryXBlockInfo(ModuleStoreTestCase):
         self.assertIsNone(xblock_info.get('graders', None))
 
 
+class TestLibraryXBlockCreation(ItemTest):
+    """
+    Tests the adding of XBlocks to Library
+    """
+    def test_add_xblock(self):
+        """
+        Verify we can add an XBlock to a Library.
+        """
+        lib = LibraryFactory.create()
+        self.create_xblock(parent_usage_key=lib.location, display_name='Test', category="html")
+        lib = self.store.get_library(lib.location.library_key)
+        self.assertTrue(lib.children)
+        xblock_locator = lib.children[0]
+        self.assertEqual(self.store.get_item(xblock_locator).display_name, 'Test')
+
+    def test_no_add_discussion(self):
+        """
+        Verify we cannot add a discussion module to a Library.
+        """
+        lib = LibraryFactory.create()
+        response = self.create_xblock(parent_usage_key=lib.location, display_name='Test', category='discussion')
+        self.assertEqual(response.status_code, 400)
+        lib = self.store.get_library(lib.location.library_key)
+        self.assertFalse(lib.children)
+
+    def test_no_add_advanced(self):
+        lib = LibraryFactory.create()
+        lib.advanced_modules = ['lti']
+        lib.save()
+        response = self.create_xblock(parent_usage_key=lib.location, display_name='Test', category='lti')
+        self.assertEqual(response.status_code, 400)
+        lib = self.store.get_library(lib.location.library_key)
+        self.assertFalse(lib.children)
+
+
 class TestXBlockPublishingInfo(ItemTest):
     """
     Unit tests for XBlock's outline handling.

cms/djangoapps/contentstore/views/tests/test_library.py

@@ -4,6 +4,7 @@ Unit tests for contentstore.views.library
 More important high-level tests are in contentstore/tests/test_libraries.py
 """
 from contentstore.tests.utils import AjaxEnabledTestClient, parse_json
+from contentstore.views.component import get_component_templates
 from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase
 from xmodule.modulestore.tests.factories import LibraryFactory
 from mock import patch
@@ -183,3 +184,16 @@ class UnitTestLibraries(ModuleStoreTestCase):
         lib = LibraryFactory.create()
         response = self.client.get(make_url_for_lib(lib.location.library_key))
         self.assertEqual(response.status_code, 403)
+
+    def test_get_component_templates(self):
+        """
+        Verify that templates for adding discussion and advanced components to
+        content libraries are not provided.
+        """
+        lib = LibraryFactory.create()
+        lib.advanced_modules = ['lti']
+        lib.save()
+        templates = [template['type'] for template in get_component_templates(lib, library=True)]
+        self.assertIn('problem', templates)
+        self.assertNotIn('discussion', templates)
+        self.assertNotIn('advanced', templates)

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

@@ -1,7 +1,6 @@
 """
 Acceptance tests for Content Libraries in Studio
 """
-
 from .base_studio_test import StudioLibraryTest
 from ...pages.studio.utils import add_component
 from ...pages.studio.library import LibraryPage
@@ -102,3 +101,9 @@ class LibraryEditPageTest(StudioLibraryTest):
         self.assertEqual(len(self.lib_page.xblocks), 1)
         problem_block = self.lib_page.xblocks[0]
         self.assertIn("Laura Roslin", problem_block.student_content)
+
+    def test_no_discussion_button(self):
+        """
+        Ensure the UI is not loaded for adding discussions.
+        """
+        self.assertFalse(self.browser.find_elements_by_css_selector('span.large-discussion-icon'))