code: def populate_current_fields(abbr):
      
      meta = db.metadata.find_one({'_id': abbr})
      current_term = meta['terms'][-1]
      current_session = current_term['sessions'][-1]
  
      for bill in db.bills.find({settings.LEVEL_FIELD: abbr}):
          if bill['session'] == current_session:
              bill['_current_session'] = True
          else:
              bill['_current_session'] = False
  
          if bill['session'] in current_term['sessions']:
              bill['_current_term'] = True
          else:
              bill['_current_term'] = False
  
          db.bills.save(bill, safe=True)
docs: Set/update _current_term and _current_session fields on all bills
      for a given location.