feat: return unit upstreamInfo and disallow edits to units in courses that are sourced from a library (#773)

* feat: Add upstream_info to unit
* feat: disallow edits to units in courses that are sourced from a library (#774)

---------

Co-authored-by: Jillian Vogel <jill@opencraft.com>
Co-authored-by: Rômulo Penido <romulo.penido@gmail.com>

Author: 3 people

cms/djangoapps/contentstore/views/preview.py

@@ -299,8 +299,14 @@ def _studio_wrap_xblock(xblock, view, frag, context, display_name_only=False):
         if selected_groups_label:
             selected_groups_label = _('Access restricted to: {list_of_groups}').format(list_of_groups=selected_groups_label)  # lint-amnesty, pylint: disable=line-too-long
         course = modulestore().get_course(xblock.location.course_key)
-        can_edit = context.get('can_edit', True)
-        can_add = context.get('can_add', True)
+
+        if root_xblock and root_xblock.upstream and str(root_xblock.upstream).startswith('lct:'):
+            can_edit = False
+            can_add = False
+        else:
+            can_edit = context.get('can_edit', True)
+            can_add = context.get('can_add', True)
+
         # Is this a course or a library?
         is_course = xblock.context_key.is_course
         tags_count_map = context.get('tags_count_map')
@@ -315,7 +321,7 @@ def _studio_wrap_xblock(xblock, view, frag, context, display_name_only=False):
             'is_root': is_root,
             'is_reorderable': is_reorderable,
             'can_edit': can_edit,
-            'can_edit_visibility': context.get('can_edit_visibility', is_course),
+            'can_edit_visibility': can_edit and context.get('can_edit_visibility', is_course),
             'course_authoring_url': settings.COURSE_AUTHORING_MICROFRONTEND_URL,
             'is_loading': context.get('is_loading', False),
             'is_selected': context.get('is_selected', False),

cms/djangoapps/contentstore/xblock_storage_handlers/view_handlers.py

@@ -1278,6 +1278,10 @@ def create_xblock_info(  # lint-amnesty, pylint: disable=too-many-statements
         if is_xblock_unit:
             # if xblock is a Unit we add the discussion_enabled option
             xblock_info["discussion_enabled"] = xblock.discussion_enabled
+
+            # Also add upstream info
+            xblock_info["upstream_info"] = UpstreamLink.try_get_for_block(xblock).to_json()
+
         if xblock.category == "sequential":
             # Entrance exam subsection should be hidden. in_entrance_exam is
             # inherited metadata, all children will have it.

cms/templates/studio_xblock_wrapper.html

@@ -211,12 +211,13 @@
                                 <span data-tooltip="${_('Drag to reorder')}" class="drag-handle action"></span>
                             </li>
                         % endif
-                    % elif not show_inline:
-                        <li class="action-item action-edit action-edit-view-only">
-                            <a href="#" class="edit-button action-button">
-                                <span class="action-button-text">${_("Details")}</span>
-                            </a>
-                        </li>
+                        % if not show_inline:
+                            <li class="action-item action-edit action-edit-view-only">
+                                <a href="#" class="edit-button action-button">
+                                    <span class="action-button-text">${_("Details")}</span>
+                                </a>
+                            </li>
+                        % endif
                     % endif
                 % endif
             </ul>