title: Django AttributeError: 'Alias' object has no attribute 'urls'
body: <p>I've just finished writing out my model for my Heroes App:</p>
  
  <p>Here is my models.py file for my Heroes app:</p>
  
  <p>from django.db import models</p>
  
  <pre><code># Create your models here.
  class Hero(models.Model):
      codename = models.CharField(max_length = 30)
      profilePic = models.ImageField(blank=True) #blank makes this optional
  
      def __str__(self):
          return (self.codename)
  
  class Stats(models.Model):
      heroID = models.ForeignKey('Hero')
      height = models.CharField(max_length = 10)
      weight = models.CharField(max_length = 10)
      STATS_CHOICES = (
      ('1', 'Extremely Low'),
      ('2', 'Very Low'),
      ('3', 'Low'),
      ('4', 'Average'),
      ('5', 'Good'),
      ('6', 'Above Average'),
      ('7', 'High'),
      ('8', 'Very High'),
      ('9', 'Super Human'),
      ('10', 'Above and Beyond'))
      powers = models.CharField(max_length = 5, choices = STATS_CHOICES)
      intelligence = models.CharField(max_length = 5, choices = STATS_CHOICES)
      durability = models.CharField(max_length = 5, choices = STATS_CHOICES)
      strength = models.CharField(max_length = 5, choices = STATS_CHOICES)
      speed = models.CharField(max_length = 5, choices = STATS_CHOICES)
  
      def __str__(self):
          return (self.heroID)
  
  class Team(models.Model):
      name = models.CharField(max_length = 25)
      leader = models.IntegerField
      address = models.TextField
      description = models.TextField
      members = models.TextField
  
  class Status(models.Model):
      heroID = models.ForeignKey('Hero')
      missionID = models.IntegerField
      TeamID = models.IntegerField
  
      def __str__(self):
          return (self.heroID, self.missionID, self.TeamID)
  
  class Alias(models.Model):
      heroID = models.ForeignKey('Hero')
      firstName = models.CharField(max_length = 25)
      surname = models.CharField(max_length = 25)
      formerCodeNames = models.TextField
      occupation = models.CharField(max_length = 30)
      address = models.TextField
      citizenship = models.CharField(max_length = 40)
      species = models.CharField(max_length = 40)
  
      def __str__(self):
          return (self.heroID, self.firstName, self.surname)
  </code></pre>
  
  <p>I adjusted my settings.py file under the Installed Apps:</p>
  
  <pre><code>INSTALLED_APPS = [
      'django.contrib.admin',
      'django.contrib.auth',
      'django.contrib.contenttypes',
      'django.contrib.sessions',
      'django.contrib.messages',
      'django.contrib.staticfiles',
  
      #custom apps
      'heroes',
  ]
  </code></pre>
  
  <p>And then I adjusted my admin.py file:</p>
  
  <pre><code>from django.contrib import admin
  
  # Register your models here.
  from .models import Hero, Stats, Team, Status, Alias
  
  admin.site.register(Hero, Stats)
  admin.site.register(Team)
  admin.site.register(Status, Alias)
  </code></pre>
  
  <p>In the Command Prompt I typed out: python manage.py makemigrations and I got this error - "AttributeError: 'Alias' object has no attribute 'urls'":</p>
  
  <pre><code>(secondproject) C:\Python34\Scripts\secondproject\heroes4Hire&gt;python manage.py
  emigrations
  aceback (most recent call last):
  File "manage.py", line 22, in &lt;module&gt;
    execute_from_command_line(sys.argv)
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\core\managem
  \__init__.py", line 367, in execute_from_command_line
    utility.execute()
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\core\managem
  \__init__.py", line 359, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\core\managem
  \base.py", line 294, in run_from_argv
    self.execute(*args, **cmd_options)
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\core\managem
  \base.py", line 342, in execute
    self.check()
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\core\managem
  \base.py", line 374, in check
    include_deployment_checks=include_deployment_checks,
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\core\managem
  \base.py", line 361, in _run_checks
    return checks.run_checks(**kwargs)
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\core\checks\
  istry.py", line 81, in run_checks
    new_errors = check(app_configs=app_configs)
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\core\checks\
  s.py", line 14, in check_url_config
    return check_resolver(resolver)
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\core\checks\
  s.py", line 24, in check_resolver
    for pattern in resolver.url_patterns:
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\utils\functi
  l.py", line 35, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\urls\resolve
  py", line 313, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\utils\functi
  l.py", line 35, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\urls\resolve
  py", line 306, in urlconf_module
    return import_module(self.urlconf_name)
  File "C:\Python34\Scripts\secondproject\lib\importlib\__init__.py", line 109,
   import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "&lt;frozen importlib._bootstrap&gt;", line 2254, in _gcd_import
  File "&lt;frozen importlib._bootstrap&gt;", line 2237, in _find_and_load
  File "&lt;frozen importlib._bootstrap&gt;", line 2226, in _find_and_load_unlocked
  File "&lt;frozen importlib._bootstrap&gt;", line 1200, in _load_unlocked
  File "&lt;frozen importlib._bootstrap&gt;", line 1129, in _exec
  File "&lt;frozen importlib._bootstrap&gt;", line 1471, in exec_module
  File "&lt;frozen importlib._bootstrap&gt;", line 321, in _call_with_frames_removed
  File "C:\Python34\Scripts\secondproject\heroes4Hire\heroes4Hire\urls.py", lin
  0, in &lt;module&gt;
    url(r'^admin/', admin.site.urls),
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\contrib\admi
  ites.py", line 267, in urls
    return self.get_urls(), 'admin', self.name
  File "C:\Python34\Scripts\secondproject\lib\site-packages\django\contrib\admi
  ites.py", line 251, in get_urls
    url(r'^%s/%s/' % (model._meta.app_label, model._meta.model_name), include(m
  l_admin.urls)),
  tributeError: 'Alias' object has no attribute 'urls'
  </code></pre>
  
  <p>What does it mean and how do I fix it? I've looked at other similar problems on StackOverFlow but I didn't understand how to fix it.</p>