はRuntimeError：Modelクラスdjango_messages.models.Messageは、明示的なapp_labelを宣言しないとINSTALLED_APPS

Question

内のアプリケーションに、私は私のメッセージングもののためhttps://github.com/arneb/django-messagesパッケージを使用しようとすると、次の

pip install git+https://github.com/arneb/django-messages.git 

INSTALLED_APPS = [ 
    'django.contrib.admin', 
    'django.contrib.auth', 
    'django.contrib.contenttypes', 
    'django.contrib.sessions', 
    'django.contrib.messages', 
    'django.contrib.staticfiles', 
    'django.contrib.sites', 
    'rest_framework', 
    'rest_framework.authtoken', 
    'oauth2_provider', 
    'api', 
    'localflavor', 
    'django_localflavor_us', 
    'django_countries', 
    'haystack', 
    'django_messages', 

] 

urlpatterns = [ 
    url(r'^admin/', admin.site.urls), 
    url(r'^messages/', include('django_messages.urls')), 
] 

を試していますされていません私はpython manage.py runserverを実行したときに、私は次のエラーを得た：

Unhandled exception in thread started by <function wrapper at 0x107cedaa0> 
Traceback (most recent call last): 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django/utils/autoreload.py", line 226, in wrapper 
    fn(*args, **kwargs) 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 121, in inner_run 
    self.check(display_num_errors=True) 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django/core/management/base.py", line 374, in check 
    include_deployment_checks=include_deployment_checks, 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django/core/management/base.py", line 361, in _run_checks 
    return checks.run_checks(**kwargs) 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django/core/checks/registry.py", line 81, in run_checks 
    new_errors = check(app_configs=app_configs) 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django/core/checks/urls.py", line 14, in check_url_config 
    return check_resolver(resolver) 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django/core/checks/urls.py", line 24, in check_resolver 
    for pattern in resolver.url_patterns: 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django/utils/functional.py", line 35, in __get__ 
    res = instance.__dict__[self.name] = self.func(instance) 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django/urls/resolvers.py", line 313, in url_patterns 
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module) 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django/utils/functional.py", line 35, in __get__ 
    res = instance.__dict__[self.name] = self.func(instance) 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django/urls/resolvers.py", line 306, in urlconf_module 
    return import_module(self.urlconf_name) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module 
    __import__(name) 
    File "/Users/shivakrishna/shiva/Office_projects/iPitch/project /project /urls.py", line 23, in <module> 
    url(r'^messages/', include('django_messages.urls')), 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django/conf/urls/__init__.py", line 50, in include 
    urlconf_module = import_module(urlconf_module) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module 
    __import__(name) 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django_messages/urls.py", line 4, in <module> 
    from django_messages.views import * 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django_messages/views.py", line 11, in <module> 
    from django_messages.models import Message 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django_messages/models.py", line 48, in <module> 
    class Message(models.Model): 
    File "/Users/shivakrishna/.virtualenvs/project /lib/python2.7/site-packages/django/db/models/base.py", line 113, in __new__ 
    "INSTALLED_APPS." % (module, name) 
RuntimeError: Model class django_messages.models.Message doesn't declare an explicit app_label and isn't in an application in INSTALLED_APPS. 

私はそのエラーが起こっている理由を知っているとどのようにそれを解決するためにすることはできますか？これらの質問に答えで述べたように

Answer 1

：

1. RemovedInDjango19Warning: Model doesn't declare an explicit app_label
2. Django 1.9 deprecation warnings app_label

あなたはそれがアプリケーションによって初期化される前にモデルを使用することに関連して取得しているエラー。

あなたは、初期化時に実行信号を使用していないことをあなたのコメントに述べ、そのために検索されています

1. 初期化で呼び出される任意の方法を、あなたのモデル、またはdjango-messagesモデルを使用。あなたが持っている場合は、app.pyのMyAppConfigクラスの中でそれらのメソッド呼び出しを配置し​​てください。

2. あなたが実行中の任意の相対パスをお持ちの場合は、正確なモジュールパスにそれを変更します。

   from .models import MyModel 
   from .messages import * 
   
   to 
   
   from apps.myapp.models import MyModel 
   django.messages import *