Migration error with Django 1.7.1
Question: I'm getting an error when performing a migration after introducing a new app
(django-allauth). I'm not sure what else to try in order to fix the error.
I've tried a few things but they don't seem to help unfortunately.

when running **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"),
     ]    
    

**What I've tried so far:**

  1. followed the advice here: <http://stackoverflow.com/a/25858659> however this has not changed anything for me. 
  2. I've also tried <https://code.djangoproject.com/ticket/22051#comment:12> with no success.

**note:** makemigrations runs (no changes detected) but migrate fails.

**platform setup** : This is currently on Django 1.7.1 on a Windows box.
django-allauth runs successfully within other apps on this box.

**Has anyone come across this before and is there a fix?**

thanks in advance

**\---issued command sequence below:**

    
    
         (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
    

**[what fixed this for me]** \- ended up being a problem with sequencing I
guess....

  1. disable all of the allauth apps within INSTALLED_APPS in settings.py
  2. run manage.py migrate enable all of the allauth apps and disable the wagtail app that was generated for the project (e.g. blog)
  3. run manage.py migrate again enable both sets of apps in INSTALLED_APPS
  4. run manage.py migrate again

seems to be happy now.

hope this helps someone and saves them some time!


Answer: ended up being a problem with sequencing I guess....

  1. disable all of the allauth apps within INSTALLED_APPS in settings.py
  2. run manage.py migrate enable all of the allauth apps and disable the wagtail app that was generated for the project (e.g. blog)
  3. run manage.py migrate again enable both sets of apps in INSTALLED_APPS
  4. run manage.py migrate again

seems to be happy now.

hope this helps someone and saves them some time!

