Django loading users using inital_data.json

Question

I am using the method described in this question to load intial users for my django project.

This saves user permissions, where one permission record might look like this:

{
"pk": 56, 
"model": "auth.permission", 
"fields": {
  "codename": "change_somemodel", 
  "name": "Can change some model", 
  "content_type": 19
}

And a user record:

{
"pk": 2, 
"model": "auth.user", 
"fields": {
  "username": "some_user", 
  "first_name": "", 
  "last_name": "", 
  "is_active": true, 
  "is_superuser": false, 
  "is_staff": true, 
  "last_login": "2011-09-20 06:36:54", 
  "groups": [], 
  "user_permissions": [
    10, 
    11, 
    19, 
    20, 
    21, 
    1, 
    2, 
    56,
    ...,
  ], 
  "password": "sha1$e4f29$fcec7f8bb930d98abdaaa3c0020220f413c4c1f5", 
  "email": "", 
  "date_joined": "2011-03-15 06:01:41"
}

Is there any potential for the content type foreign key to change on a future installation? How about if models or apps added? For example, let's say I add a model to my core app, then I have some reusable apps which are listed after that in settings.py, will those have a different content_type_id on a new installation? Can I include the content_type table in my initial data, or is that likely to cause other issues?

If this isn't a reliable method to load multiple initial users into the database, what are the alternatives?

Answer 1

Check Natural Keys . Use -n w/ dumpdata, like ./manage.py dumpdata -n auth.User