Question

我正面临这一错误:

AttributeError at /
 str  object has no attribute  _meta 
Request Method: GET
Request URL:    http://localhost:8000/
Django Version: 1.3
Exception Type: AttributeError
Exception Value:    
 str  object has no attribute  _meta 
Exception Location: C:Python27libsite-packagesdjangocontribadminsites.py in         register, line 80
Python Executable:  C:Python27python.exe
Python Version: 2.7.2
Python Path:    [ D:\programming\django_projects\ecomstore ,
 C:\Python27\lib\site-packages\setuptools-0.6c9-py2.7.egg ,
  C:\Python27\lib\site-packages\pymysql-0.3-py2.6.egg ,
  C:\Windows\system32\python27.zip ,
  C:\Python27\DLLs ,
  C:\Python27\lib ,
  C:\Python27\lib\plat-win ,
  C:\Python27\lib\lib-tk ,
  C:\Python27 ,
  C:\Python27\lib\site-packages ,
  C:\Python27\lib\site-packages\PIL ]
 Server time:   Fri, 13 Jan 2012 16:44:18 +0500

如果我评论<条码>admin.autodiscover()的话,那么这种错误就会出现。示范法如下:

from django import forms
from catalog.models import Product

class ProductAdminForm(forms.ModelForm):
  class Meta:
    model=Product
    def clean_price(self):
        if self.cleaned_data[ price ]<=0:
            raise forms.ValidationError( Price must be greater than zero )
        return self.cleaned_data[ price ]

因此,如果有人理解这个问题,请说明。

下面是追溯:

Environment:


 Request Method: GET
 Request URL: http://localhost:8000/

 Django Version: 1.3
 Python Version: 2.7.2
 Installed Applications:
 [ django.contrib.auth ,
   django.contrib.contenttypes ,
   django.contrib.sessions ,
   django.contrib.sites ,
   django.contrib.messages ,
   django.contrib.staticfiles ,
   django.contrib.admin ,
   ecomstore.catalog ]
 Installed Middleware:
 ( django.middleware.common.CommonMiddleware ,
   django.contrib.sessions.middleware.SessionMiddleware ,
   django.middleware.csrf.CsrfViewMiddleware ,
   django.contrib.auth.middleware.AuthenticationMiddleware ,
   django.contrib.messages.middleware.MessageMiddleware )


Traceback:
 File "C:Python27libsite-packagesdjangocorehandlersase.py" in get_response
 101.                             request.path_info)
 File "C:Python27libsite-packagesdjangocoreurlresolvers.py" in resolve
 250.             for pattern in self.url_patterns:
 File "C:Python27libsite-packagesdjangocoreurlresolvers.py" in _get_url_patterns
 279.         patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
 File "C:Python27libsite-packagesdjangocoreurlresolvers.py" in _get_urlconf_module
 274.             self._urlconf_module = import_module(self.urlconf_name)
 File "C:Python27libsite-packagesdjangoutilsimportlib.py" in import_module
 35.     __import__(name)
 File "D:programmingdjango_projectsecomstore..ecomstoreurls.py" in <module>
 5. admin.autodiscover()
 File "C:Python27libsite-packagesdjangocontribadmin\__init__.py" in autodiscover
 26.             import_module( %s.admin  % app)
 File "C:Python27libsite-packagesdjangoutilsimportlib.py" in import_module
 35.     __import__(name)
  File "D:programmingdjango_projectsecomstore..ecomstorecatalogadmin.py" in <module>
 19. admin.site.register( Product ,  ProductAdmin )
 File "C:Python27libsite-packagesdjangocontribadminsites.py" in register
 80.             if model._meta.abstract:

 Exception Type: AttributeError at /
 Exception Value:  str  object has no attribute  _meta

Answer 1

The issue is this line:

admin.site.register( Product ,  ProductAdmin )

你们必须穿上班物体,而不是str。这一工作应当:

admin.site.register(Product, ProductAdmin)

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