Django - 从自定义对象中获取值

时间:2013-11-13 00:41:47

标签: python django django-models django-forms django-views

我正在使用Django为用户创建一个OneToOneField对象,代码如下:

class ControlInformation(models.Model):
    user = models.OneToOneField(User)

    TURN_ON_OFF = (
        ('ON', 'On'),
        ('OFF', 'Off'),
    )

    AUTO_MANU = (
        ('ON', 'On'),
        ('OFF', 'Off'),
    )

    TEMP_DINNINGROOM = (
        ('HIGH', 'High'),
        ('MEDIUM', 'Medium'),
        ('LOW', 'Low'),
    )

    TEMP_LIVINGROOM = (
        ('HIGH', 'High'),
        ('MEDIUM', 'Medium'),
        ('LOW', 'Low'),
    )

    turn_on_off = models.CharField(max_length=2, choices=TURN_ON_OFF)
    auto_manu = models.CharField(max_length = 2, choices=AUTO_MANU)
    temp_dinningroom = models.CharField(max_length=2, choices=TEMP_DINNINGROOM)
    temp_livingroom = models.CharField(max_length=2, choices=TEMP_LIVINGROOM)


#signal function: if a user is created, add control information to the user    
def create_control_information(sender, instance, created, **kwargs):
    if created:
        ControlInformation.objects.create(user=instance)

post_save.connect(create_control_information, sender=User)

然后,我使用下面的代码为这个对象创建了一个表单:

class ControlInformationForm(forms.Form):

    TURN_ON_OFF = (
        ('ON', 'On'),
        ('OFF', 'Off'),
    )

    AUTO_MANU = (
        ('ON', 'On'),
        ('OFF', 'Off'),
    )

    TEMP_DINNINGROOM = (
        ('HIGH', 'High'),
        ('MEDIUM', 'Medium'),
        ('LOW', 'Low'),
    )

    TEMP_LIVINGROOM = (
        ('HIGH', 'High'),
        ('MEDIUM', 'Medium'),
        ('LOW', 'Low'),
    )

    on_off = forms.ChoiceField(label="on_off", choices=TURN_ON_OFF)
    auto_manu = forms.ChoiceField(label="auto_manu", choices=AUTO_MANU)
    temp_dinningroom = forms.ChoiceField(label="temp_dinningroom", choices=TEMP_DINNINGROOM)
    temp_livingroom = forms.ChoiceField(label="temp_livingroom", choices=TEMP_LIVINGROOM)

最后,我用了

ControlInformation = request.user.get_profile()
form=ControlInformationForm(request.POST)
在views.py中

获取ControlInformation对象的值,但它不起作用(错误:'UserProfile'对象没有属性'turn_on_off')。我认为问题发生是因为我使用了request.user.get_profile()。如何修改它以获取ControlInformation对象的值然后修改并保存()它?

1 个答案:

答案 0 :(得分:1)

而不是ControlInformation = request.user.get_profile()使用:

instance = ControlInformation.objects.get(user=request.user)

更多提示:

  • 使用ModelForm从您的模型中自动创建表单。

  • 您可以使用BooleanField代替ON / OFF。

您可以对两个字段使用一次查找:

  TEMP = (
        ('HIGH', 'High'),
        ('MEDIUM', 'Medium'),
        ('LOW', 'Low'),
  )

享受Django!