Handle dates have year smaller than 1900

cms/djangoapps/contentstore/views/course.py

@@ -328,7 +328,8 @@ def _course_outline_json(request, course_module):
         course_module,
         include_child_info=True,
         course_outline=True,
-        include_children_predicate=lambda xblock: not xblock.category == 'vertical'
+        include_children_predicate=lambda xblock: not xblock.category == 'vertical',
+        user=request.user
     )
 
 

cms/djangoapps/contentstore/views/item.py

@@ -479,6 +479,7 @@ def _save_xblock(user, xblock, data=None, children_strings=None, metadata=None,
                             if verr.message:
                                 reason = _("Invalid data ({details})").format(details=verr.message)
                             return JsonResponse({"error": reason}, 400)
+
                         field.write_to(xblock, value)
 
         # update the xblock and call any xblock callbacks
@@ -754,7 +755,8 @@ def _get_module_info(xblock, rewrite_static_links=True, include_ancestor_info=Fa
 
 
 def create_xblock_info(xblock, data=None, metadata=None, include_ancestor_info=False, include_child_info=False,
-                       course_outline=False, include_children_predicate=NEVER, parent_xblock=None, graders=None):
+                       course_outline=False, include_children_predicate=NEVER, parent_xblock=None, graders=None,
+                       user=None):
     """
     Creates the information needed for client-side XBlockInfo.
 
@@ -794,6 +796,7 @@ def create_xblock_info(xblock, data=None, metadata=None, include_ancestor_info=F
             course_outline,
             graders,
             include_children_predicate=include_children_predicate,
+            user=user
         )
     else:
         child_info = None
@@ -832,7 +835,7 @@ def create_xblock_info(xblock, data=None, metadata=None, include_ancestor_info=F
         "published_on": get_default_time_display(xblock.published_on) if published and xblock.published_on else None,
         "studio_url": xblock_studio_url(xblock, parent_xblock),
         "released_to_students": datetime.now(UTC) > xblock.start,
-        "release_date": _get_release_date(xblock),
+        "release_date": _get_release_date(xblock, user),
         "visibility_state": visibility_state,
         "has_explicit_staff_lock": xblock.fields['visible_to_staff_only'].is_set_on(xblock),
         "start": xblock.fields['start'].to_json(xblock.start),
@@ -1003,7 +1006,7 @@ def _create_xblock_ancestor_info(xblock, course_outline):
     }
 
 
-def _create_xblock_child_info(xblock, course_outline, graders, include_children_predicate=NEVER):
+def _create_xblock_child_info(xblock, course_outline, graders, include_children_predicate=NEVER, user=None):
     """
     Returns information about the children of an xblock, as well as about the primary category
     of xblock expected as children.
@@ -1021,16 +1024,22 @@ def _create_xblock_child_info(xblock, course_outline, graders, include_children_
                 child, include_child_info=True, course_outline=course_outline,
                 include_children_predicate=include_children_predicate,
                 parent_xblock=xblock,
-                graders=graders
+                graders=graders,
+                user=user
             ) for child in xblock.get_children()
         ]
     return child_info
 
 
-def _get_release_date(xblock):
+def _get_release_date(xblock, user=None):
     """
     Returns the release date for the xblock, or None if the release date has never been set.
     """
+    # If year of start date is less than 1900 then reset the start date to DEFAULT_START_DATE
+    if xblock.start.year < 1900 and user:
+        xblock.start = DEFAULT_START_DATE
+        xblock = _update_with_callback(xblock, user)
+
     # Treat DEFAULT_START_DATE as a magic number that means the release date has not been set
     return get_default_time_display(xblock.start) if xblock.start != DEFAULT_START_DATE else None
 

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

@@ -29,6 +29,7 @@ from xmodule.modulestore.django import modulestore
 from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase, TEST_DATA_SPLIT_MODULESTORE
 from xmodule.modulestore.tests.factories import ItemFactory, LibraryFactory, check_mongo_calls, CourseFactory
 from xmodule.x_module import STUDIO_VIEW, STUDENT_VIEW
+from xmodule.course_module import DEFAULT_START_DATE
 from xblock.exceptions import NoSuchHandlerError
 from xblock_django.user_service import DjangoXBlockUserService
 from opaque_keys.edx.keys import UsageKey, CourseKey
@@ -1531,11 +1532,14 @@ class TestXBlockInfo(ItemTest):
 
     def test_vertical_xblock_info(self):
         vertical = modulestore().get_item(self.vertical.location)
+        vertical.start = datetime(year=1899, month=1, day=1, tzinfo=UTC)
+
         xblock_info = create_xblock_info(
             vertical,
             include_child_info=True,
             include_children_predicate=ALWAYS,
-            include_ancestor_info=True
+            include_ancestor_info=True,
+            user=self.user
         )
         add_container_page_publishing_info(vertical, xblock_info)
         self.validate_vertical_xblock_info(xblock_info)
@@ -1601,6 +1605,7 @@ class TestXBlockInfo(ItemTest):
         self.assertEqual(xblock_info['display_name'], 'Unit 1')
         self.assertTrue(xblock_info['published'])
         self.assertEqual(xblock_info['edited_by'], 'testuser')
+        self.assertEqual(xblock_info['start'], DEFAULT_START_DATE.strftime('%Y-%m-%dT%H:%M:%SZ'))
 
         # Validate that the correct ancestor info has been included
         ancestor_info = xblock_info.get('ancestor_info', None)