一个对象不可写意味着什么？

问题描述

我不知道这是怎么回事...我只想检查模型字段的值，然后相应地对其进行更新...任何帮助或见识都受到赞赏！

I don't know what's going on here... I just want to check the value of a model field and then update it accordingly... any help or insight is appreciated!

模型：

class UserProfile(models.Model):
    user = models.ForeignKey(User, unique=True)
    beta = models.CharField(max_length=1, blank=True, null=True)

视图：

from internal.accounts.models import UserProfile
from django.contrib.auth.models import User
@login_required    
def beta_testers(request):
    user = User.objects.get(username=request.user.username)
    user_profile = user.get_profile()

    count = UserProfile.objects.filter(beta='1').count()

    if count < 50 and not user_profile['beta']:
        user_profile['beta'] = '1'
        user_profile.save()

错误：

TypeError at /utilities/beta-signup/
'UserProfile' object is unsubscriptable
Request Method: GET
Request URL:    http://localhost/utilities/beta-signup/?x=1&y=15
Django Version: 1.2.1
Exception Type: TypeError
Exception Value:    
'UserProfile' object is unsubscriptable
Exception Location: C:/django\internal\cms_helper\views.py in beta_testers, line 284

推荐答案

错误为无法订阅。您的user_profile对象不是字典。使用 user_profile.beta ，而不是 user_profile ['beta'] 。

The error is "unSUBscriptable". Your user_profile object isn't a dictionary. Use user_profile.beta, not user_profile['beta'].

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