13

エラーが発生しました

'CampSite' object has no attribute '__getitem__'

管理インターフェイスに新しいCampConエントリを保存するとき。キャンプサイトのデータベースを処理するcampsitesというアプリケーションと、レビューを処理するcontentという別のアプリケーションがあります。私はDjangoを初めて使用しますが、これは私の最初の非チュートリアルベースのプロジェクトです。私は頭を悩ませ、運が悪かったので答えをウェブで探してきました。よろしくお願いします。これが私のキャンプ場モデルです：

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

コンテンツモデルは次のとおりです。

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)

そして、これが完全なトレースバックです。

    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__'
4

4 に答える 4

30

問題は、__unicode__関数がUnicode文字列を返す必要があるときにモデルオブジェクトを返すことです。

これは、メソッドにunicode()関数を追加することで実現できます。__unicode__

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)

これによりCampSite.__unicode__、が返されcampsite.nameます。

于 2012-10-25T17:54:17.993 に答える
2

代わりに次の方法を使用してください。

   def __unicode__(self):
        return unicode(self.campsite)
于 2012-10-25T17:55:44.287 に答える
0

これは、次のように実行した場合にも発生します。

event_name = CharField(max_length = 250)

そしてこれが好きではない:(正しい方法）

event_name = models.CharField(max_length = 250)

誰かに役立つかもしれません

于 2013-12-20T03:36:25.023 に答える
0

これはGoogleでの最初のヒットであるため'ItemGroup' object has no attribute '__getitem__'、次の操作を行ったときに同様のエラー（）が発生しました。

class ItemGroup(models.Model):
    groupname = models.CharField(max_length=128)

    def __unicode__(self):
        return "%s" % self.groupname

class Item(models.Model):
    name = models.CharField(max_length=128)
    group = models.ForeignKey(MedGroup, verbose_name="Groep")

    def __unicode__(self):
        return "%s (%s)" % (self.name, self.group[:10])

最後の行が間違っています。

その行をに置き換えることで修正されましたreturn "%s (%s)" % (self.name, self.group.groupname[:10])

于 2014-04-13T11:42:13.957 に答える