python - 如何将应用程序添加到 Django CMS 3.0.12 并迁移？

Question

我是 Django 和 DjangoCMS 的新手。我最近安装了 DjangoCMS，并希望按照教程 Tutorial 1 为其编写自己的应用程序和 Introduction to Plugins .

经过一些研究和测试，我发现当我尝试运行任一命令时:

python manage.py migrate

or

python manage.py makemigrations polls

我最终遇到了以下错误:

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/username/folder/DjangoCMS/env/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
    utility.execute()
  File "/home/username/folder/DjangoCMS/env/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 312, in execute
    django.setup()
  File "/home/username/folder/DjangoCMS/env/local/lib/python2.7/site-packages/django/__init__.py", line 18, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/username/folder/DjangoCMS/env/local/lib/python2.7/site-packages/django/apps/registry.py", line 108, in populate
   app_config.import_models(all_models)
  File "/home/username/folder/DjangoCMS/env/local/lib/python2.7/site-packages/django/apps/config.py", line 198, in import_models
   self.models_module = import_module(models_module_name)
  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/home/username/folder/DjangoCMS/env/local/lib/python2.7/site-packages/djangocms_text_ckeditor/models.py", line 14, in <module>
    from cms.models import CMSPlugin
  File "/home/username/folder/DjangoCMS/env/local/lib/python2.7/site-packages/cms/models/__init__.py", line 3, in <module>
    from .pagemodel import *  # nopyflakes
  File "/home/username/folder/DjangoCMS/env/local/lib/python2.7/site-packages/cms/models/pagemodel.py", line 20, in <module>
    from cms.models.placeholdermodel import Placeholder
  File "/home/username/folder/DjangoCMS/env/local/lib/python2.7/site-packages/cms/models/placeholdermodel.py", line 16, in <module>
    from cms.utils.placeholder import PlaceholderNoAction, get_placeholder_conf
  File "/home/username/folder/DjangoCMS/env/local/lib/python2.7/site-packages/cms/utils/placeholder.py", line 8, in <module>
    from sekizai.helpers import get_varname
  File "/home/username/folder/DjangoCMS/env/local/lib/python2.7/site-packages/sekizai/helpers.py", line 3, in <module>
    from django.template import VariableNode, Variable
ImportError: cannot import name VariableNode

我认为它特定于我在 settings.py 文件中设置的已安装应用程序，因为当我一直在处理此错误时，我发现大多数在 DjangoCMS 的 INSTALLED_APPS 中设置的应用程序实际上并没有必须安装才能在本地运行该网站。

INSTALLED_APPS = (
    'djangocms_admin_style',
    'djangocms_text_ckeditor',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.admin',
    'django.contrib.sites',
    'django.contrib.sitemaps',
    'django.contrib.staticfiles',
    'django.contrib.messages',
    'djangocms_style',
    'djangocms_column',
    'djangocms_file',
    'djangocms_flash',
    'djangocms_googlemap',
    'djangocms_inherit',
    'djangocms_link',
    'djangocms_picture',
    'djangocms_teaser',
    'djangocms_video',
    'cms',
    'menus',
    'sekizai',
    'reversion',
    'mptt',
    'south',
    'mywebsite',
    'polls'
)

查看堆栈，我认为这个特定错误与 sekizai 应用程序相关，但是当我继续 pip install django-sekizai 时，当我尝试迁移时，我仍然遇到相同的错误。

Answer 1

我用 Django==1.9.7 尝试过此操作，如果将 django-sekizai 升级到版本 0.9.0，则错误消失。因此，只需将 django-sekizai 升级到适合您 Django 版本的最新版本即可。

pip install django-sekizai==0.9.0