AttributeError: type object 'MyMetadata' has no attribute '_meta'

[wangyc666666]

mmand_line
utility.execute()
File "/usr/local/python3.4/lib/python3.3/site-packages/Django-1.8.11-py3.3.egg/django/core/management/init.py", line 328, in execute
django.setup()
File "/usr/local/python3.4/lib/python3.3/site-packages/Django-1.8.11-py3.3.egg/django/init.py", line 18, in setup
apps.populate(settings.INSTALLED_APPS)
File "/usr/local/python3.4/lib/python3.3/site-packages/Django-1.8.11-py3.3.egg/django/apps/registry.py", line 115, in populate
app_config.ready()
File "/usr/local/python3.4/lib/python3.3/site-packages/Django-1.8.11-py3.3.egg/django/contrib/admin/apps.py", line 22, in ready
self.module.autodiscover()
File "/usr/local/python3.4/lib/python3.3/site-packages/Django-1.8.11-py3.3.egg/django/contrib/admin/init.py", line 24, in autodiscover
autodiscover_modules('admin', register_to=site)
File "/usr/local/python3.4/lib/python3.3/site-packages/Django-1.8.11-py3.3.egg/django/utils/module_loading.py", line 74, in autodiscover_modules
import_module('%s.%s' % (app_config.name, module_to_search))
File "/usr/local/python3.4/lib/python3.3/importlib/init.py", line 90, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1584, in _gcd_import
File "", line 1565, in _find_and_load
File "", line 1532, in _find_and_load_unlocked
File "", line 584, in _check_name_wrapper
File "", line 1022, in load_module
File "", line 1003, in load_module
File "", line 560, in module_for_loader_wrapper
File "", line 868, in _load_module
File "", line 313, in _call_with_frames_removed
File "/var/www/html/chouti/app01/admin.py", line 10, in
register_seo_admin(admin.site, MyMetadata)
File "/usr/local/python3.4/lib/python3.3/site-packages/rollyourown/seo/admin.py", line 52, in register_seo_admin
if metadata_class._meta.use_sites:
AttributeError: type object 'MyMetadata' has no attribute '_meta'

vim /usr/local/python3.4/lib/python3.3/site-packages/rollyourown/seo/admin.py

def register_seo_admin(admin_site, metadata_class):
if metadata_class._meta.use_sites:
path_admin = SitePathMetadataAdmin
model_instance_admin = SiteModelInstanceMetadataAdmin
model_admin = SiteModelMetadataAdmin
view_admin = SiteViewMetadataAdmin
else:
path_admin = PathMetadataAdmin
model_instance_admin = ModelInstanceMetadataAdmin
model_admin = ModelMetadataAdmin
view_admin = ViewMetadataAdmin

vim app01/models.py
from rollyourown import seo

class MyMetadata(seo.Metadata):
title = seo.Tag(head=True, max_length=68)
description = seo.MetaTag(max_length=155)
keywords = seo.KeywordTag()
heading = seo.Tag(name="h1")
vim /var/www/html/chouti/app01/admin.py

ecoding:utf-8

from django.contrib import admin
from app01 import models
from app01.models import MyMetadata
from django.db.models.lookups import Search
from rollyourown.seo.admin import register_seo_admin
from django.contrib import admin

from app01.seo import MyMetadata

register_seo_admin(admin.site, MyMetadata)

Register your models here.

class News(admin.ModelAdmin):
list_display=('title','summary','url','favor_count','reply_count','news_type','user','create_date')
list_filter=('create_date',)
search_fields =('title','user')

admin.site.register(models.News,News)
admin.site.register(models.UserType)
admin.site.register(models.Admin)
admin.site.register(models.NewType)
admin.site.register(models.Reply)
admin.site.register(models.Category)
~