old_contents: from django.core.management.base import BaseCommand, CommandError
  from website.models import Person
  
  class Command(BaseCommand):
      help = 'This is a one time use command to update the url_name field for all People in the database.'
  
      def handle(self, *args, **options):
          for person in Person.objects.all():
              if person.url_name is None:
                  print('Name: ' + person.first_name + person.last_name)
                  person.url_name = (person.first_name + person.last_name).lower()
                  print('URL Name: ' + person.url_name)
                  person.save()
  
new_contents: from django.core.management.base import BaseCommand, CommandError
  from website.models import Person
  
  class Command(BaseCommand):
      help = 'This is a one time use command to update the url_name field for all People in the database.'
  
      def handle(self, *args, **options):
          print('Updating urls...')
          for person in Person.objects.all():
              print('Name: ' + person.first_name + person.last_name)
              person.url_name = (person.first_name + person.last_name).lower()
              print('URL Name: ' + person.url_name)
              person.save()
  
subject: Make updateurls apply to all people