#30640: createsuperuser faces error when there is a custom user model with 
required
field with the name same as command default options
------------------------------------------+------------------------
               Reporter:  Hasan Ramezani  |          Owner:  nobody
                   Type:  Bug             |         Status:  new
              Component:  contrib.auth    |        Version:  2.2
               Severity:  Normal          |       Keywords:
           Triage Stage:  Unreviewed      |      Has patch:  0
    Needs documentation:  0               |    Needs tests:  0
Patch needs improvement:  0               |  Easy pickings:  0
                  UI/UX:  0               |
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 If we have a `User` model like this:

 {{{
 class User(AbstractUser):
     database = models.CharField(max_length=20)

     REQUIRED_FIELDS = ['database']
 }}}

 When we run `python manage.py createsuperuser`,  we will get this error:
 `argparse.ArgumentError: argument --database: conflicting option string:
 --database`.

 Because of `createsuperuser` adds a `--database` option by default and
 also `database` is a required field of `User` model and command tries to
 add `--database` again.

 Possible solution: add a prefix to fields which already added by
 `createsupperuser`.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/30640>
Django <https://code.djangoproject.com/>
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