feat: [AXIMST-410] add possibility to fetch draft item

lms/djangoapps/courseware/block_render.py

@@ -96,6 +96,8 @@
 from common.djangoapps.edxmako.services import MakoService
 from common.djangoapps.xblock_django.user_service import DjangoXBlockUserService
 from openedx.core.lib.cache_utils import CacheService
+from xmodule.modulestore import ModuleStoreEnum  # lint-amnesty, pylint: disable=wrong-import-order
+
 
 if TYPE_CHECKING:
     from rest_framework.request import Request
@@ -813,7 +815,7 @@ def _get_usage_key_for_course(course_key, usage_id) -> UsageKey:
         raise Http404("Invalid location") from exc
 
 
-def _get_block_by_usage_key(usage_key):
+def _get_block_by_usage_key(usage_key, request=None):
     """
     Gets a block instance based on a mapped-to-course usage_key
 
@@ -828,7 +830,29 @@ def _get_block_by_usage_key(usage_key):
             usage_key.course_key,
             usage_key
         )
-        raise Http404 from exc
+
+        if request is None:
+            # No request provided, cannot proceed
+            raise Http404 from exc
+
+        referer = request.META.get('HTTP_REFERER')
+        authoring_mfe_query_key = 'is_authoring_mfe'
+        authoring_mfe_matches = [settings.COURSE_AUTHORING_MICROFRONTEND_URL, authoring_mfe_query_key]
+        is_fetched_from_authoring_mfe = referer and any(match in referer for match in authoring_mfe_matches)
+
+        if is_fetched_from_authoring_mfe:
+            try:
+                block = modulestore().get_item(usage_key, revision=ModuleStoreEnum.RevisionOption.draft_only)
+                block_orig_usage_key, block_orig_version = modulestore().get_block_original_usage(usage_key)
+            except ItemNotFoundError:
+                log.warning(
+                    "Invalid draft location for course id %s: %s",
+                    usage_key.course_key,
+                    usage_key
+                )
+                raise Http404 from exc
+        else:
+            raise Http404 from exc
 
     tracking_context = {
         'module': {
@@ -855,7 +879,7 @@ def get_block_by_usage_id(request, course_id, usage_id, disable_staff_debug_info
     """
     course_key = CourseKey.from_string(course_id)
     usage_key = _get_usage_key_for_course(course_key, usage_id)
-    block, tracking_context = _get_block_by_usage_key(usage_key)
+    block, tracking_context = _get_block_by_usage_key(usage_key, request)
 
     _, user = setup_masquerade(request, course_key, has_access(request.user, 'staff', block, course_key))
     field_data_cache = FieldDataCache.cache_for_block_descendents(
@@ -923,7 +947,7 @@ def _invoke_xblock_handler(request, course_id, usage_id, handler, suffix, course
         # At the time of writing, this is only used by one handler. If this usage grows, we may want to re-evaluate
         # how we do this to something more elegant. If you are the author of a third party block that decides it wants
         # to set this too, please let us know so we can consider making this easier / better-documented.
-        block, _ = _get_block_by_usage_key(block_usage_key)
+        block, _ = _get_block_by_usage_key(block_usage_key, request)
         handler_method = getattr(block, handler, False)
         will_recheck_access = handler_method and getattr(handler_method, 'will_recheck_access', False)
 

lms/djangoapps/courseware/views/views.py

@@ -1536,6 +1536,7 @@ def render_xblock(request, usage_key_string, check_if_enrolled=True, disable_sta
     set_custom_attribute('block_type', usage_key.block_type)
 
     requested_view = request.GET.get('view', 'student_view')
+    is_authoring_mfe = request.GET.get('is_authoring_mfe')
     if requested_view != 'student_view' and requested_view != 'public_view':  # lint-amnesty, pylint: disable=consider-using-in
         return HttpResponseBadRequest(
             f"Rendering of the xblock view '{bleach.clean(requested_view, strip=True)}' is not supported."
@@ -1651,7 +1652,7 @@ def render_xblock(request, usage_key_string, check_if_enrolled=True, disable_sta
             'web_app_course_url': get_learning_mfe_home_url(course_key=course.id, url_fragment='home'),
             'on_courseware_page': True,
             'verified_upgrade_link': verified_upgrade_deadline_link(request.user, course=course),
-            'is_learning_mfe': is_learning_mfe,
+            'is_learning_mfe': is_authoring_mfe or is_learning_mfe,
             'is_mobile_app': is_mobile_app,
             'render_course_wide_assets': True,
 

lms/envs/common.py

@@ -5050,6 +5050,8 @@ def _make_locale_paths(settings):  # pylint: disable=missing-function-docstring
 # .. toggle_tickets: https://openedx.atlassian.net/browse/VAN-838
 ENABLE_DYNAMIC_REGISTRATION_FIELDS = False
 
+COURSE_AUTHORING_MICROFRONTEND_URL = None
+
 ############## Settings for EmailChangeMiddleware ###############
 
 # .. toggle_name: ENFORCE_SESSION_EMAIL_MATCH

lms/envs/devstack.py

@@ -287,6 +287,9 @@ def should_show_debug_toolbar(request):  # lint-amnesty, pylint: disable=missing
 ########################## LEARNER HOME APP ##############################
 LEARNER_HOME_MICROFRONTEND_URL = 'http://localhost:1996'
 
+################### FRONTEND APPLICATION COURSE AUTHORING ###################
+COURSE_AUTHORING_MICROFRONTEND_URL = 'http://localhost:2001'
+
 ###################### Cross-domain requests ######################
 FEATURES['ENABLE_CORS_HEADERS'] = True
 CORS_ALLOW_CREDENTIALS = True

lms/templates/courseware/courseware-chromeless.html

@@ -59,6 +59,12 @@
   var $$course_id = "${course.id | n, js_escaped_string}";
 </script>
 
+% if block:
+<script type="text/javascript">
+  var $$xBlockLocation = "${block.location | n, js_escaped_string}";
+</script>
+% endif
+
 </%block>
 
 <%block name="js_extra">
@@ -183,6 +189,7 @@
 
         window.parent.postMessage({
             type: 'plugin.resize',
+            location: $$xBlockLocation || '',
             payload: {
               width: newWidth,
               height: newHeight,