プロキシモデルのエラー：基底クラスから同じ名前のフィールドを持つクラスの衝突でローカルフィールドに上記で

Question

class EmailUser(User): 

    class Meta: 
     proxy = True 

    email = models.EmailField(_('email address'), unique=True) 

、私はproxy modelを実装しようとしているが、私は、このエラーメッセージが出てい：

Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x10e04ed08> 
Traceback (most recent call last): 
    File "/Users/sahandzarrinkoub/Documents/Programming/Web/Django/workout/lib/python3.6/site-packages/django/utils/autoreload.py", line 228, in wrapper 
    fn(*args, **kwargs) 
    File "/Users/sahandzarrinkoub/Documents/Programming/Web/Django/workout/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 117, in inner_run 
    autoreload.raise_last_exception() 
    File "/Users/sahandzarrinkoub/Documents/Programming/Web/Django/workout/lib/python3.6/site-packages/django/utils/autoreload.py", line 251, in raise_last_exception 
    six.reraise(*_exception) 
    File "/Users/sahandzarrinkoub/Documents/Programming/Web/Django/workout/lib/python3.6/site-packages/django/utils/six.py", line 685, in reraise 
    raise value.with_traceback(tb) 
    File "/Users/sahandzarrinkoub/Documents/Programming/Web/Django/workout/lib/python3.6/site-packages/django/utils/autoreload.py", line 228, in wrapper 
    fn(*args, **kwargs) 
    File "/Users/sahandzarrinkoub/Documents/Programming/Web/Django/workout/lib/python3.6/site-packages/django/__init__.py", line 27, in setup 
    apps.populate(settings.INSTALLED_APPS) 
    File "/Users/sahandzarrinkoub/Documents/Programming/Web/Django/workout/lib/python3.6/site-packages/django/apps/registry.py", line 108, in populate 
    app_config.import_models() 
    File "/Users/sahandzarrinkoub/Documents/Programming/Web/Django/workout/lib/python3.6/site-packages/django/apps/config.py", line 202, in import_models 
    self.models_module = import_module(models_module_name) 
    File "/Users/sahandzarrinkoub/Documents/Programming/Web/Django/workout/lib/python3.6/importlib/__init__.py", line 126, in import_module 
    return _bootstrap._gcd_import(name[level:], package, level) 
    File "<frozen importlib._bootstrap>", line 978, in _gcd_import 
    File "<frozen importlib._bootstrap>", line 961, in _find_and_load 
    File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked 
    File "<frozen importlib._bootstrap>", line 655, in _load_unlocked 
    File "<frozen importlib._bootstrap_external>", line 678, in exec_module 
    File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed 
    File "/Users/sahandzarrinkoub/Documents/Programming/Web/Django/workout/workout/workoutcal/models.py", line 28, in <module> 
    class EmailUser(User): 
    File "/Users/sahandzarrinkoub/Documents/Programming/Web/Django/workout/lib/python3.6/site-packages/django/db/models/base.py", line 231, in __new__ 
    base.__name__, 
django.core.exceptions.FieldError: Local field 'username' in class 'EmailUser' clashes with field of the same name from base class 'User'. 

なぜこのエラーが発生するのか、どう対処すればいいのでしょうか。私はDjangoバージョン1.11を使用しています。

Answer 1

プロキシモデルでは何をしようとしているのでしょうか。幸いなことに、Djangoでは、組み込みのUserモデルを簡単に拡張できます：AbstractUserから継承する通常の具象モデルを作成し、AUTH_USER_MODEL設定をモデルの名前に設定します。