feat: add a feature flag to disable dates tab for all courses

(cherry picked from commit 88bb2a4)

lms/djangoapps/courseware/tabs.py

@@ -315,6 +315,12 @@ def link_func(course, _reverse_func):
         tab_dict['link_func'] = link_func
         super().__init__(tab_dict)
 
+    @classmethod
+    def is_enabled(cls, course, user=None):
+        if settings.FEATURES.get('DISABLE_DATES_TAB'):
+            return False
+        return super().is_enabled(course, user)
+
 
 def get_course_tab_list(user, course):
     """

lms/djangoapps/courseware/tests/test_tabs.py

@@ -885,3 +885,16 @@ def test_singular_dates_tab(self):
             if tab.type == 'dates':
                 num_dates_tabs += 1
         assert num_dates_tabs == 1
+
+    def test_dates_tab_is_enabled_by_default(self):
+        """Test dates tab is enabled by default."""
+        tab = DatesTab({'type': DatesTab.type, 'name': 'dates'})
+        user = self.create_mock_user()
+        assert self.is_tab_enabled(tab, self.course, user)
+
+    @patch.dict("django.conf.settings.FEATURES", {"DISABLE_DATES_TAB": True})
+    def test_dates_tab_disabled_by_feature_flag(self):
+        """Test dates tab is disabled by the feature flag."""
+        tab = DatesTab({'type': DatesTab.type, 'name': 'dates'})
+        user = self.create_mock_user()
+        assert not self.is_tab_enabled(tab, self.course, user)

lms/envs/common.py

@@ -1116,6 +1116,15 @@
     # .. toggle_target_removal_date: None
     # .. toggle_tickets: 'https://github.com/open-craft/edx-platform/pull/632/files'
     'ENABLE_TEACHING_ASSISTANT_ROLE': False,
+
+    # .. toggle_name: FEATURES['DISABLE_DATES_TAB']
+    # .. toggle_implementation: DjangoSetting
+    # .. toggle_default: False
+    # .. toggle_description: Disables dates tab for all courses.
+    # .. toggle_use_cases: open_edx
+    # .. toggle_creation_date: 2024-04-15
+    # .. toggle_tickets: https://github.com/openedx/edx-platform/pull/34511
+    'DISABLE_DATES_TAB': False,
 }
 
 # Specifies extra XBlock fields that should available when requested via the Course Blocks API