Django 1.7.1的迁移错误

时间:2014-12-02 23:35:02

标签: django django-allauth django-1.7 wagtail

在引入新应用程序(django-allauth)后执行迁移时出现错误。我不知道还有什么可以尝试以修复错误。我尝试过一些东西,但不幸的是它们似乎并没有帮助。

运行 manage.py migrate

File "D:\Python27\Lib\site-packages\django\db\migrations\state.py", line 71, 
in render raise     
InvalidBasesError("Cannot resolve bases for %r\nThis can happen if you are inheriting 
models from an app with migrations (e.g. contrib.auth)\n in an app with no migrations; 
see https://docs.djangoproject.com/en/1.7/topics/migrations/#dependencies for more" % 
new_unrendered_models)
django.db.migrations.state.InvalidBasesError: Cannot resolve bases for 
[<ModelState: 'blog.BlogPage'>, <ModelState: 'blog.BlogIndexPage'>]
This can happen if you are inheriting models from an app with migrations 
(e.g. contrib.auth) in an app with no migrations; see
https://docs.djangoproject.com/en/1.7/topics/migrations/#dependencies for more

models.py

    from django.db import models
    from wagtail.wagtailcore.models import Page, Orderable
    from wagtail.wagtailcore.fields import RichTextField
    from wagtail.wagtailadmin.edit_handlers import FieldPanel  ,MultiFieldPanel,InlinePanel, PageChooserPanel
    from modelcluster.fields import ParentalKey

class BlogPage(Page):
    body = RichTextField()
    date = models.DateField("Post date")
    indexed_fields = ('body', )
    search_name = "Blog Page"

BlogPage.content_panels = [
    FieldPanel('title', classname="full title"),
    FieldPanel('date'),
    FieldPanel('body', classname="full"),
]


class LinkFields(models.Model):
    link_page = models.ForeignKey(
        'wagtailcore.Page',
        null=True,
        blank=True,
        related_name='+'
    )

panels = [
    PageChooserPanel('link_page'),
]

class Meta:
    abstract = True

class RelatedLink(LinkFields):
    title = models.CharField(max_length=255, help_text="Link title")
    panels = [
         FieldPanel('title'),
         MultiFieldPanel(LinkFields.panels, "Link"),
     ]

     class Meta:
         abstract = True


 class BlogIndexPageRelatedLink(Orderable, RelatedLink):
     page = ParentalKey('blog.BlogIndexPage', related_name='related_links')

 class BlogIndexPage(Page):
     intro = models.CharField(max_length=256)
     indexed_fields = ('body', )
     search_name = "Blog Index Page"

 BlogIndexPage.content_panels = [
     FieldPanel('title', classname="full title"),
     FieldPanel('intro', classname="full"),
     InlinePanel(BlogIndexPage, 'related_links', label="Related links"),
 ]    

到目前为止我尝试了什么:

  1. 遵循了这里的建议:https://stackoverflow.com/a/25858659但是这对我没有任何改变。
  2. 我也试过https://code.djangoproject.com/ticket/22051#comment:12但没有成功。
  3. 注意:运行makemigrations(未检测到任何更改)但迁移失败。

    平台设置:这是目前在Windows机器上的Django 1.7.1上。 django-allauth在此框中的其他应用程序中成功运行。

    之前是否有人遇到此问题并且有解决方法?

    提前致谢

    ---下面发出命令序列:

         (env) D:\git\rebootv2.1\blog>python manage.py migrate
         D:\Python27\Lib\site-packages\treebeard\mp_tree.py:102: RemovedInDjango18Warning:      `MP_NodeManager.get_query_set` method
     should be renamed `get_queryset`.
       class MP_NodeManager(models.Manager):
    
     Operations to perform:
       Synchronize unmigrated apps: account, allauth, modelcluster, blog, compressor, facebook,      wagtailsnippets, socialaccount
       Apply all migrations: core, wagtailusers, wagtailembeds, wagtailadmin, sessions, admin,      wagtailcore, sites, auth, contenttypes, wagtaildocs, taggit, wagtailsearch, wagtailforms,      wagtailredirects, wagtailimages
     Synchronizing apps without migrations:
       Creating tables...
       Installing custom SQL...
       Installing indexes...
     Running migrations:
       Applying sites.0001_initial...Traceback (most recent call last):
       File "manage.py", line 10, in <module>
         execute_from_command_line(sys.argv)
       File "D:\Python27\Lib\site-packages\django\core\management\__init__.py", line 385, in execute_from_command_line
    utility.execute()
       File "D:\Python27\Lib\site-packages\django\core\management\__init__.py", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
       File "D:\Python27\Lib\site-packages\django\core\management\base.py", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
       File "D:\Python27\Lib\site-packages\django\core\management\base.py", line 338, in execute
    output = self.handle(*args, **options)
       File "D:\Python27\Lib\site-packages\django\core\management\commands\migrate.py", line 160, in handle
    executor.migrate(targets, plan, fake=options.get("fake", False))
       File "D:\Python27\Lib\site-packages\django\db\migrations\executor.py", line 63, in migrate
    self.apply_migration(migration, fake=fake)
       File "D:\Python27\Lib\site-packages\django\db\migrations\executor.py", line 91, in apply_migration
    if self.detect_soft_applied(migration):
       File "D:\Python27\Lib\site-packages\django\db\migrations\executor.py", line 135, in detect_soft_applied
    apps = project_state.render()
       File "D:\Python27\Lib\site-packages\django\db\migrations\state.py", line 71, in render raise InvalidBasesError("Cannot resolve bases for %r\nThis can happen if you are inheriting models from an app with migrations (e.g. contrib.auth)\n in an app with no migrations; see https://docs.djangoproject.com/en/1.7/topics/migrations/#dependencies for more" % new_unrendered_models)
     django.db.migrations.state.InvalidBasesError: Cannot resolve bases for [<ModelState: 'blog.BlogPage'>, <ModelState: 'blog.BlogIndexPage'>]
     This can happen if you are inheriting models from an app with migrations (e.g. contrib.auth)
      in an app with no migrations; see https://docs.djangoproject.com/en/1.7/topics/migrations/#dependencies for more
    
     (env) D:\git\rebootv2.1\blog>python manage.py makemigrations
     D:\Python27\Lib\site-packages\treebeard\mp_tree.py:102: RemovedInDjango18Warning: `MP_NodeManager.get_query_set` method
     should be renamed `get_queryset`.
       class MP_NodeManager(models.Manager):
    
     No changes detected
    

    [为我解决了这个问题] - 最后出现了测序问题我猜...

    1. 在settings.py
    2. 中禁用INSTALLED_APPS中的所有allauth应用
    3. 运行manage.py migrate启用所有allauth应用并禁用 为项目生成的wagtail应用程序(例如博客)
    4. 再次运行manage.py migrate,启用INSTALLED_APPS
    5. 中的两组应用
    6. 再次运行manage.py migrate
    7. 现在好像很开心。

      希望这可以帮助某人并节省一些时间!

4 个答案:

答案 0 :(得分:13)

最终出现了测序问题,我猜......

  1. 在settings.py
  2. 中禁用INSTALLED_APPS中的所有allauth应用
  3. 运行manage.py migrate启用所有allauth应用并禁用为项目生成的wagtail应用(例如博客)
  4. 再次运行manage.py migrate,启用INSTALLED_APPS
  5. 中的两组应用
  6. 再次运行manage.py migrate
  7. 现在好像很开心。

    希望这可以帮助某人并节省一些时间!

答案 1 :(得分:4)

我也有错误Cannot resolve bases for ... This can happen if you are inheriting models from an app with migrations。这是因为python manage.py makemigrations没有创建任何迁移文件。这是因为我没有migrations文件夹。我添加了该文件夹(内部空__init__.py)后,一切运行良好。

答案 2 :(得分:1)

我在尝试使demo工作时遇到了这个问题(没有尝试安装第三方应用)。因为错误是在树状结构中,我猜测可能有更新的版本。果然,这就是诀窍:

pip uninstall django-treebeard
pip install django-treebeard==3.0

现在我可以在wagtail演示设置中运行此命令而不会出现错误:

./manage.py load_initial_data

答案 3 :(得分:0)

就我而言,我创建了从auth.models.User继承的模型

class User(auth.models.User, auth.models.PermissionsMixin):
    def __str__(self):
        return "@{}".format(self.username)

这是错误的原因。

  

解决方案:

     

禁用(注释)该模型=>运行migration =>启用该模型=>运行再次迁移。应该可以。