Question

我正在使用Django 1.7.5，并尝试构建pinax-project-teams启动器。运行python manage.py check时，我会遇到`django.core.exceptions.AppRegistryNotReady：尚未加载应用。'。

我已经在StackOverflow和其他地方阅读了类似的错误，似乎这个错误来自各种原因，并且往往涉及特定环境的修复。所以我可以提前删除几个解决方案：1）这是不从以前的Django版本升级; 2）因此，wsgi.py正确使用较新的from django.core.wsgi import get_wsgi_application。

完整的堆栈跟踪：

(env)trevor@nikola:webapp.git$ python manage.py check
Traceback (most recent call last):
  File "manage.py", line 9, in <module>
    startup.run()
  File "/Users/trevor/zenith/webapp.git/djangoapp/startup.py", line 22, in run
    admin.autodiscover()
  File "/usr/local/lib/python2.7/site-packages/django/contrib/admin/__init__.py", line 23, in autodiscover
    autodiscover_modules('admin', register_to=site)
  File "/usr/local/lib/python2.7/site-packages/django/utils/module_loading.py", line 67, in autodiscover_modules
for app_config in apps.get_app_configs():
  File "/usr/local/lib/python2.7/site-packages/django/apps/registry.py", line 137, in get_app_configs
    self.check_apps_ready()
  File "/usr/local/lib/python2.7/site-packages/django/apps/registry.py", line 124, in check_apps_ready
    raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.

错误源于pinax的startup.run()，其中包含两个调用：autoload(["receivers"])，用于加载settings.INSTALLED_APPS中的模块和admin.autodiscover()。这是自动加载：

def autoload(submodules):
    for app in settings.INSTALLED_APPS:
        mod = import_module(app)
        # print('Module: \t\n%s' % str(mod))
        for submodule in submodules:
            # print('Submodule: \t\n%s\n' % str(submodule))
            try:
                import_module("{0}.{1}".format(app, submodule))
            except:
                if module_has_submodule(mod, submodule):
                    raise

通过INSTALLED_APPS并成功导入列出的所有应用，但随后admin.autodiscover()抛出Apps aren't loaded yet.消息。我不确定我错过了什么......很明显，很可能！

哦，最后：我已经阅读了import django; django.setup()修复程序，但我认为这是针对脚本和互动，而不是django项目？因为我尝试运行交互式，导入我的项目设置，运行configure（），运行django.setup（），然后退出，但是当我尝试执行runserver时，这对上述问题没有影响......： - /想法？

Answer 1

编辑 - 更新＆amp;总结 pinax-project-teams代码与Django 1.7不完全兼容，至少不是在新的Django项目的初始“原始”安装。解决方法包括几个步骤：

从startup.py（line 21, in run()）移除明确/冗余应用加载：注释或删除admin.autodiscover()。

明确安装Django 1.6.5 （pip install Django==1.6.5）。

通过django 1.6版本（python manage.py syncdb）同步数据库。

明确安装Django 1.7.5 （pip install Django==1.7.5）。

原帖答案： 我想我已经缩小了一点，如果不是在范围内，至少在根本原因。虽然我的项目不是从Django＆lt; = 1.6升级到1.7，但这仍然是一个问题。 pinax-project-team中的某些内容使其默认与Django 1.7 不兼容。在 1.6.5 django安装上，相同的安装将允许syncdb然后runserver，但django-1.7.5会抛出Apps aren't loaded yet。

我找到了一个很好的长Django 1.7 release notes列表，我正在开始查看是否可以确定不兼容的原因。

至少有一个问题是Pinax在startup.py中的“额外”自动发现，as of 1.7 release is automatically executed在Django自己的启动过程中。这解决了应用加载问题，看起来......但django.contrib.sites还有另一个问题。在1.7中运行migrate时，由于数据库中缺少表，其中一个迁移失败，特别是django_site（下面的完整跟踪）。此表存在于1.6 django安装的db中。修改1.7的设置以指向1.6项目中的sqlite文件解决了这个问题，并且瞧，它的工作原理。所以这是我在pinax-project-teams和Django 1.7之间发现的唯一两个冲突。

(env)trevor@nikola:mysite7$ python manage.py migrate Operations to perform: Synchronize unmigrated apps: wiki, account, eventlog, kaleo, profiles, easy_thumbnails, pinax_theme_bootstrap, teams, bootstrapform Apply all migrations: admin, contenttypes, sites, auth, sessions Synchronizing apps without migrations: Creating tables... Installing custom SQL... Installing indexes... Traceback (most recent call last): File "manage.py", line 11, in <module> execute_from_command_line(sys.argv) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line utility.execute() File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/core/management/__init__.py", line 377, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/core/management/base.py", line 288, in run_from_argv self.execute(*args, **options.__dict__) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/core/management/base.py", line 338, in execute output = self.handle(*args, **options) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 128, in handle created_models = self.sync_apps(connection, executor.loader.unmigrated_apps) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 298, in sync_apps call_command('loaddata', 'initial_data', verbosity=self.verbosity, database=connection.alias, skip_validation=True, app_label=app_label, hide_empty=True) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/core/management/__init__.py", line 115, in call_command return klass.execute(*args, **defaults) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/core/management/base.py", line 338, in execute output = self.handle(*args, **options) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/core/management/commands/loaddata.py", line 61, in handle self.loaddata(fixture_labels) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/core/management/commands/loaddata.py", line 91, in loaddata self.load_label(fixture_label) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/core/management/commands/loaddata.py", line 148, in load_label obj.save(using=self.using) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/core/serializers/base.py", line 173, in save models.Model.save_base(self.object, using=using, raw=True) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/db/models/base.py", line 617, in save_base updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/db/models/base.py", line 679, in _save_table forced_update) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/db/models/base.py", line 723, in _do_update return filtered._update(values) > 0 File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/db/models/query.py", line 600, in _update return query.get_compiler(self.db).execute_sql(CURSOR) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 1004, in execute_sql cursor = super(SQLUpdateCompiler, self).execute_sql(result_type) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 786, in execute_sql cursor.execute(sql, params) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/db/backends/utils.py", line 81, in execute return super(CursorDebugWrapper, self).execute(sql, params) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/db/backends/utils.py", line 65, in execute return self.cursor.execute(sql, params) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/db/utils.py", line 94, in __exit__ six.reraise(dj_exc_type, dj_exc_value, traceback) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/db/backends/utils.py", line 65, in execute return self.cursor.execute(sql, params) File "/Users/trevor/code/pinax/7-pinaxtest/env/lib/python2.7/site-packages/django/db/backends/sqlite3/base.py", line 485, in execute return Database.Cursor.execute(self, query, params) django.db.utils.OperationalError: Problem installing fixture '/Users/trevor/code/pinax/7-pinaxtest/mysite7/fixtures/initial_data.json': Could not load sites.Site(pk=1): no such table: django_site

Answer 2

postgresql和其他数据库之间的区别很重要。如果您正在使用SQLite后端，那么您只需复制数据库文件本身即可在多个位置重复使用。然后你可以有一个1.6项目和一个1.7项目，报告到同一个文件，而不需要一直升级和/或降级。

Django（＆amp; Pinax）：追溯“AppRegistryNotReady：尚未加载应用程序。”例外

2 个答案: