Re: Error while customising Django User

Hi Tim,

Thanks for your suggestion. Will go through the documentation and will try it out.

Thanks.

On Saturday, December 19, 2015 at 9:26:37 PM UTC+5:30, Tim Graham wrote:

You could use a OneToOneField as described at https://docs.djangoproject.com/en/stable/topics/auth/customizing/#extending-the-existing-user-model

On Saturday, December 19, 2015 at 5:12:52 AM UTC-5, Web Architect wrote:

Hi Tim,

Thanks for your response and the details.

In that case, what would be the best approach to have additional credentials for the user? Do I need to create another model/table and link it to User? In that case, how will that get included in the User object? Do I need to create a middleware?

I am sorry if some queries seem out of the way as I am new to Django. 

Thanks.

On Friday, December 18, 2015 at 8:24:57 PM UTC+5:30, Tim Graham wrote:

If you didn't start your project with a custom user, it's non-trivial to start using one. Please see https://code.djangoproject.com/ticket/25313.

On Friday, December 18, 2015 at 6:55:16 AM UTC-5, Web Architect wrote:

Hi,

I am new to Django and still under the process of learning. We are using an open source ecommerce platform - Oscar - for our online store. Oscar is based on Django.

I was trying to customise the Django User model by extending with some few extra fields/columns:

# file: your-project/apps/user/models.py  from django.db import models    
from django.contrib.auth.models import AbstractUser
  class User(AbstractUser):       user_type = models.IntegerField()

# use our own user model in settings.py  AUTH_USER_MODEL = "user.User"
With the above changes, when I run 'makemigration' followed by 'migrate', I am getting the following errors:
Running migrations:
  
  Rendering model states...Traceback (most recent call last):
  
  File "./manage.py", line 10, in <module>
  
    execute_from_command_line(sys.argv)
  
  File "/Users/pinakeebiswas/waltzz/lib/python2.7/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
  
    utility.execute()
  
  File "/Users/pinakeebiswas/waltzz/lib/python2.7/site-packages/django/core/management/__init__.py", line 330, in execute
  
    self.fetch_command(subcommand).run_from_argv(self.argv)
  
  File "/Users/pinakeebiswas/waltzz/lib/python2.7/site-packages/django/core/management/base.py", line 393, in run_from_argv
  
    self.execute(*args, **cmd_options)
  
  File "/Users/pinakeebiswas/waltzz/lib/python2.7/site-packages/django/core/management/base.py", line 444, in execute
  
    output = self.handle(*args, **options)
  
  File "/Users/pinakeebiswas/waltzz/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 222, in handle
  
    executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
  
  File "/Users/pinakeebiswas/waltzz/lib/python2.7/site-packages/django/db/migrations/executor.py", line 100, in migrate
  
    state.apps  # Render all real_apps -- performance critical
  
  File "/Users/pinakeebiswas/waltzz/lib/python2.7/site-packages/django/utils/functional.py", line 60, in __get__
  
    res = instance.__dict__[self.name] = self.func(instance)
  
  File "/Users/pinakeebiswas/waltzz/lib/python2.7/site-packages/django/db/migrations/state.py", line 166, in apps
  
    return StateApps(self.real_apps, self.models)
  
  File "/Users/pinakeebiswas/waltzz/lib/python2.7/site-packages/django/db/migrations/state.py", line 248, in __init__
  
    raise ValueError(msg.format(field=operations[0][1], model=lookup_model))
  
ValueError: Lookup failed for model referenced by field basket.Basket.owner: customer.User

I am not sure what's causing the above error. Certainly there could be models which would be dependent on the User model but I thought the makemigrations and migrate should be able to resolve those.
Would appreciate if someone could help me with resolving the above errors.
Thanks

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