Question

我从Django 1.6升级到1.7，当我尝试manage.py runserver时，我得到以下描述：

Traceback (most recent call last):
  File "manage.py", line 9, in <module>
    execute_from_command_line(sys.argv)
  File "/home/ben/.virtualenvs/myproject/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "/home/ben/.virtualenvs/myproject/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 354, in execute
    django.setup()
  File "/home/ben/.virtualenvs/myproject/local/lib/python2.7/site-packages/django/__init__.py", line 21, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/ben/.virtualenvs/myproject/local/lib/python2.7/site-packages/django/apps/registry.py", line 85, in populate
    app_config = AppConfig.create(entry)
  File "/home/ben/.virtualenvs/myproject/local/lib/python2.7/site-packages/django/apps/config.py", line 87, in create
    module = import_module(entry)
  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/home/ben/Code/Repos/myrepo/myproject/core/mail/__init__.py", line 6, in <module>
    from myproject.core.mail.models import IMapEmailMessage, EmailStatus
  File "/home/ben/Code/Repos/myrepo/myproject/core/mail/models.py", line 20, in <module>
    from myproject.core.mail.utils import render_templates
  File "/home/ben/Code/Repos/myrepo/myproject/core/mail/utils.py", line 19, in <module>
    from myproject.core.util import clean_html
  File "/home/ben/Code/Repos/myrepo/myproject/core/util.py", line 1031, in <module>
    def make_url(url, text=_('here')):
  File "/home/ben/.virtualenvs/myproject/local/lib/python2.7/site-packages/django/utils/translation/__init__.py", line 83, in ugettext
    return _trans.ugettext(message)
  File "/home/ben/.virtualenvs/myproject/local/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 325, in ugettext
    return do_translate(message, 'ugettext')
  File "/home/ben/.virtualenvs/myproject/local/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 306, in do_translate
    _default = translation(settings.LANGUAGE_CODE)
  File "/home/ben/.virtualenvs/myproject/local/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 209, in translation
    default_translation = _fetch(settings.LANGUAGE_CODE)
  File "/home/ben/.virtualenvs/myproject/local/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 189, in _fetch
    "The translation infrastructure cannot be initialized before the "
django.core.exceptions.AppRegistryNotReady: The translation infrastructure cannot be initialized before the apps registry is ready. Check that you don't make non-lazy gettext calls at import time.

我之前没有使用过app注册表，因此我假设在使用翻译之前需要在我的应用中完成一些设置。我一直看到的解决方案是将其添加到wsgi.py：

from django.core.wsgi import get_wsgi_application
application = get_wsgi_application()

但是我已经有了那些线。在文件myproject/core/util.py中，我更改了以下行：

from django.utils.translation import ugettext as _

为：

from django.utils.translation import ugettext_lazy as _

这只是将问题移到另一个使用ugettext的文件中。是否不再可以使用非惰性ugettext？或者是否需要进行一些设置以避免在导入时进行评估？

Answer 1

使用make_url(url, text=ugettext('here'))的问题是text的默认参数在导入模块时评估，而不是make_url函数运行时。< / p>

您还没有显示产生第二个错误的代码，所以我不知道它有什么问题。

在函数内部使用ugettext是可以的（只要该函数在导入期间不运行）。例如：

def make_url(url, text=None): if text is None: text = ugettext('here')

请注意，您仍然可以在代码中执行import uggettext as _，我之前只使用ugettext来明确。

升级到Django 1.7：为翻译基础架构获取AppRegistryNotReady

1 个答案: