feat: Update Xpert Summary frontend widget and location

lms/djangoapps/courseware/block_render.py

@@ -66,7 +66,12 @@
 from lms.djangoapps.courseware.services import UserStateService
 from lms.djangoapps.grades.api import GradesUtilService
 from lms.djangoapps.lms_xblock.field_data import LmsFieldData
-from lms.djangoapps.lms_xblock.runtime import UserTagsService, lms_wrappers_aside, lms_applicable_aside_types
+from lms.djangoapps.lms_xblock.runtime import (
+    UserTagsService,
+    lms_applicable_aside_types,
+    lms_layout_asides,
+    lms_wrappers_aside,
+)
 from lms.djangoapps.verify_student.services import XBlockVerificationService
 from openedx.core.djangoapps.bookmarks.api import BookmarksService
 from openedx.core.djangoapps.crawlers.models import CrawlersConfig
@@ -644,6 +649,7 @@ def inner_get_block(block: XBlock) -> XBlock | None:
     runtime.request_token = request_token
     runtime.wrap_asides_override = lms_wrappers_aside
     runtime.applicable_aside_types_override = lms_applicable_aside_types
+    runtime.layout_asides_override = partial(lms_layout_asides, wrap_aside=runtime.wrap_aside)
 
 
 def load_single_xblock(request, user_id, course_id, usage_key_string, course=None, will_recheck_access=False):

lms/djangoapps/lms_xblock/runtime.py

@@ -4,6 +4,7 @@
 
 from django.conf import settings
 from django.urls import reverse
+from web_fragments.fragment import Fragment
 
 from lms.djangoapps.lms_xblock.models import XBlockAsidesConfig
 from openedx.core.djangoapps.user_api.course_tag import api as user_course_tag_api
@@ -129,6 +130,38 @@ def lms_applicable_aside_types(block, applicable_aside_types=None):
     ]
 
 
+def lms_layout_asides(block, context, frag, view_name, aside_frag_fns, wrap_aside=None):
+    """
+    Custom aside layout for the LMS.
+
+    XBlock's default `layout_asides` (xblock.runtime.Runtime.layout_asides) renders
+    aside content after the block's own content. summaryhook_aside (the Xpert Unit
+    Summary button) renders before instead; every other aside keeps the default
+    after-block placement.
+    """
+    before_content = []
+    after_content = []
+
+    result = Fragment()
+
+    for aside, aside_fn in aside_frag_fns:
+        aside_frag = wrap_aside(block, aside, view_name, aside_fn(block, context), context)
+        aside.save()
+        result.add_fragment_resources(aside_frag)
+
+        if aside.scope_ids.block_type == 'summaryhook_aside':
+            before_content.append(aside_frag.content)
+        else:
+            after_content.append(aside_frag.content)
+
+    result.add_content(''.join(before_content))
+    result.add_content(frag.content)
+    result.add_fragment_resources(frag)
+    result.add_content(''.join(after_content))
+
+    return result
+
+
 class UserTagsService:
     """
     A runtime class that provides an interface to the user service.  It handles filling in