“WSGIRequest”在尝试基于登录用户的用户名创建模型对象时出错

Question

瞄准

我正在尝试将Alarm.username设置为当前登录的User的用户名。问题与another query相同，尽管我的代码有点不同，因为我提取了每个Alarm对象的位置细节

如何以及在哪里集成代码中的行：username=User.objects.get(username=self.request.username)

错误

Request Method: POST
Request URL:    http://jqlc3gdp.apps.lair.io/login/set_alarm/
Django Version: 2.0
Exception Type: AttributeError
Exception Value:    
'WSGIRequest' object has no attribute 'username'
Exception Location: /mnt/project/weather_alarm/views.py in get_user_timezone, line 94

代码

型号.py

class User(models.Model):
    """ Model representing each User """
    username = models.CharField(max_length=20, unique=True)
    password = models.CharField(max_length=30, validators=[MinLengthValidator(8)])
    email = models.EmailField(max_length=254)
    first_name = models.CharField(max_length=20)
    last_name = models.CharField(max_length=20)


class Alarm(models.Model):
    """ Model representing each Alarm """
    alarm_id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    username = models.ForeignKey(User, on_delete=models.CASCADE, null=True)         # null=True is TEMP
    timezone = models.CharField(max_length=30)
    city = models.CharField(max_length=30)
    country = models.CharField(max_length=30)
    time = models.DateTimeField()
    temp_conditional = models.BooleanField()
    surf_conditional = models.BooleanField()
    temp_max = models.FloatField(blank=True, null=True)
    temp_min = models.FloatField(blank=True, null=True)
    surf_max = models.FloatField(blank=True, null=True)
    surf_min = models.FloatField(blank=True, null=True)

表单.py

class SetAlarmForm(ModelForm):
    ...    
    class Meta:
        model = Alarm
        exclude = ['username', 'timezone', 'city', 'country']

视图.py

class AlarmCreateView(LoginRequiredMixin, CreateView):
    model = Alarm
    form_class = SetAlarmForm
    template_name = 'weather_alarm/set_alarm.html'
    success_url = reverse_lazy('weather_alarm:confirm-alarm')
    login_url = "/login/"

    def form_valid(self, form):
        self.get_user_location(form)
        return super().form_valid(form)

    def get_user_location(self, form):
        """ Function to get User's location from IP and create Alarm object """
        ...
        alarm_object = Alarm.objects.create(
            alarm_id=uuid.uuid4(),
            username=User.objects.get(username=self.request.username),
            timezone=user_timezone,
            city=location.raw['address']['city'],
            country=location.raw['address']['country'],
            time=form.cleaned_data['time'].astimezone(pytz.timezone(user_timezone)),
            temp_conditional=form.cleaned_data['temp_conditional'],
            surf_conditional=form.cleaned_data['surf_conditional'],
            temp_max=form.cleaned_data['temp_max'],
            temp_min=form.cleaned_data['temp_min'],
            surf_max=form.cleaned_data['surf_max'],
            surf_min=form.cleaned_data['surf_min'],
        )
        alarm_object.save()

Answer 1

应该是self.request.user.username：

username = User.objects.get(username=self.request.user.username)

或者因为request.user已经包含了当前用户对象，所以可以更好地使用：

username = self.request.user