Question

即使布尔值发生变化，我的if语句总是会转到Else？在Django 1.6.5工作

views.py

def awaiting_email_confirmation(request):
    confirmed = EmailConfirmed.objects.get(user=request.user)
    print confirmed
    if confirmed is False:
        print "if"
        template = 'accounts/email_confirmation.html'
        context = {}
        return render(request, template, context)   
    else:
        print "else"
        return HttpResponseRedirect(reverse("dashboard"))

我的控制台将打印

True
else

False
else

这是我确认电子邮件的model.py

class EmailConfirmed(models.Model):
    user = models.OneToOneField(settings.AUTH_USER_MODEL)
    activation_key = models.CharField(max_length=200)
    confirmed = models.BooleanField(default=False)

    def __unicode__(self):
        return str(self.confirmed)

Answer 1

您的print语句显示True或False，因为您在str覆盖中返回布尔值的字符串表示形式。换句话说，您正在打印字符串'True'或'False'。实际的布尔字段confirmed是模型中的字段。您应该将if条件更改为：

if not confirmed.confirmed:
    ...

顺便说一下，当找不到get_object_or_404个对象时，最好使用get()方法而不是EmailConfirmed来返回404页面而不是服务器错误：

from django.shortcuts import get_object_or_404
...
def awaiting_email_confirmation(request):
    confirmed = get_object_or_404(EmailConfirmed, user=request.user)
    if not confirmed.confirmed:
        ...

Answer 2

我改编了catavaran＆amp;的代码。塞尔丘克。

view.py：

from django.shortcuts import get_object_or_404

def awaiting_email_confirmation(request):
confirmed = get_object_or_404(EmailConfirmed, user=request.user)
if not confirmed.confirmed:
    template = 'accounts/email_confirmation.html'
    context = {}
    return render(request, template, context)
else:
    return HttpResponseRedirect(reverse("dashboard"))

现在正在使用我的测试用例。

django查看if语句是否使用布尔值

2 个答案: