TypeError'x'对象没有属性'__getitem__'
我收到错误
'CampSite' object has no attribute '__getitem__'
当我在管理界面中保存新的CampCon条目时。我有一个名为Campsites的应用程序,它可以处理露营地的数据库,还有另一个名为Content的应用程序,它可以处理评论。我对Django非常陌生,这是我的第一个基于非教程的项目。我一直在绞尽脑汁,在网上搜索一个没有运气的答案。预先感谢您的帮助。这是我的露营地模型:
from django.contrib.gis.db import models
class CampSite(models.Model):
name = models.CharField(max_length=250)
showers = models.BooleanField()
flush = models.BooleanField()
rv = models.BooleanField()
lonlat = models.PointField(null=True, blank=True)
objects = models.GeoManager()
def __unicode__(self):
return self.name
这是内容模型:
from django.contrib.gis.db import models
from campsites.models import CampSite
from django.contrib.auth.models import User
from activities.models import Activities
class CampCon(models.Model):
campsite = models.ForeignKey(CampSite)
trip = models.ForeignKey('Trip')
Date = models.DateField()
user = models.ForeignKey(User)
overall_review = models.TextField()
facilities_review = models.IntegerField()
things_to_do = models.IntegerField()
privacy = models.IntegerField()
beauty = models.IntegerField()
overall_rating = models.IntegerField()
def __unicode__(self):
return self.campsite
class ImageDB(models.Model):
campsite = models.ForeignKey(CampSite)
user = models.ForeignKey(User)
description = models.CharField(max_length=200)
image = models.ImageField(upload_to='/home/bobby/Pictures/CampThat')
date_uploaded = models.DateField()
date_taken = models.DateField()
trip = models.ForeignKey('Trip')
activity = models.ForeignKey(Activities)
def __unicode__(self):
return self.campsite
class Trip(models.Model):
date = models.DateField()
description = models.CharField(max_length=100)
title = models.CharField(max_length=100)
blog = models.TextField()
def __unicode__(self):
return self.title
class ActivityCon(models.Model):
trip = models.ForeignKey(Trip)
rating = models.IntegerField()
overall_review = models.TextField()
activity = models.ForeignKey(Activities)
这是完整的回溯:
Environment:
Request Method: POST
Request URL: http://localhost:8000/admin/content/campcon/add/
Django Version: 1.5
Python Version: 2.7.3
Installed Applications:
('django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles',
'campsites',
'auth',
'trips',
'content',
'activities',
'django.contrib.admin')
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 "/usr/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
116. response = callback(request, *callback_args, **callback_kwargs)
File "/usr/lib/python2.7/site-packages/django/contrib/admin/options.py" in wrapper
367. return self.admin_site.admin_view(view)(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapped_view
91. response = view_func(request, *args, **kwargs)
File "/usr/lib/python2.7/site-packages/django/views/decorators/cache.py" in _wrapped_view_func
89. response = view_func(request, *args, **kwargs)
File "/usr/lib/python2.7/site-packages/django/contrib/admin/sites.py" in inner
202. return view(request, *args, **kwargs)
File "/usr/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapper
25. return bound_func(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapped_view
91. response = view_func(request, *args, **kwargs)
File "/usr/lib/python2.7/site-packages/django/utils/decorators.py" in bound_func
21. return func(self, *args2, **kwargs2)
File "/usr/lib/python2.7/site-packages/django/db/transaction.py" in inner
208. return func(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/django/contrib/admin/options.py" in add_view
958. self.log_addition(request, new_object)
File "/usr/lib/python2.7/site-packages/django/contrib/admin/options.py" in log_addition
525. action_flag = ADDITION
File "/usr/lib/python2.7/site-packages/django/contrib/admin/models.py" in log_action
18. e = self.model(None, None, user_id, content_type_id, smart_text(object_id), object_repr[:200], action_flag, change_message)
Exception Type: TypeError at /admin/content/campcon/add/
Exception Value: 'CampSite' object has no attribute '__getitem__'
-
您的问题是您的
__unicode__
函数在需要返回Unicode字符串时正在返回模型对象。您可以通过将
unicode()
函数添加到__unicode__
方法中来实现此目的:class CampCon(models.Model): campsite = models.ForeignKey(CampSite) trip = models.ForeignKey('Trip') Date = models.DateField() user = models.ForeignKey(User) overall_review = models.TextField() facilities_review = models.IntegerField() things_to_do = models.IntegerField() privacy = models.IntegerField() beauty = models.IntegerField() overall_rating = models.IntegerField() def __unicode__(self): return unicode(self.campsite) class ImageDB(models.Model): campsite = models.ForeignKey(CampSite) user = models.ForeignKey(User) description = models.CharField(max_length=200) image = models.ImageField(upload_to='/home/bobby/Pictures/CampThat') date_uploaded = models.DateField() date_taken = models.DateField() trip = models.ForeignKey('Trip') activity = models.ForeignKey(Activities) def __unicode__(self): return unicode(self.campsite)
这将调用
CampSite.__unicode__
哪个将返回campsite.name
。