code: def section(request):
      
      # If SECTIONS setting is not specified, don't do anything.
      try:
          sections = settings.SECTIONS
      except AttributeError:
          return {}
  
      # Default return is first section.
      section = sections[0]['name']
  
      try:
          pattern_name = resolve_to_name(request.path_info)
      except Resolver404:
          pattern_name = None
  
      if pattern_name:
          for option in settings.SECTIONS:
              if pattern_name in option['matching_pattern_names']:
                  section = option['name']
  
      return {'section': section}
docs: Determines the current site section from resolved view pattern and adds
      it to context['section']. Section defaults to the first specified section.