BREAKING CHANGES (backward compatible):
- All code updated to support both old and new fields
- context_object (GenericFK) and flags now primary
- department and is_main still work (DEPRECATED)
FILES UPDATED:
1. signals.py:
- create_main_department_chat() uses context_object + flags
- Creates both old and new fields for compatibility
- Checks existence using Q() for both fields
2. views.py (4 critical updates):
- has_user_access_to_chat(): uses get_participants() (supports both)
- ChatListView.get_queryset(): checks department OR context_object
- ChatDetailView.get_queryset(): checks department OR context_object
- mark_as_read_ajax(): uses get_participants() and include_all_users
3. rules.py:
- is_department_chat(): checks both department and context_object
- Supports GenericFK for Department context
4. apps.py:
- create_main_global_chat(): checks and sets flags['is_primary']
- Backward compatible with is_main
5. admin.py:
- get_readonly_fields(): checks flags['is_primary'] OR is_main
- Prevents editing primary chats
6. notifications/config.py:
- get_chat_display_name(): uses context_object OR department
7. models.py:
- Chat.__str__(): uses context_object OR department
TESTED:
✅ Signal creates chat with context_object + flags
✅ get_participants() works with both fields
✅ __str__ displays correctly
✅ is_department_chat rule works
✅ Backward compatibility preserved
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