验证 django 中的其他状态表单字段答案

【问题标题】：Validate other state form field in django验证 django 中的其他状态表单字段
【发布时间】：2017-11-13 05:38:35
【问题描述】：

当我尝试验证 Django 表单时，我不断收到表单验证错误，如果选择了“其他州”（美国以外的州），用户必须在另一个字段（其他州字段）上键入他的状态。如果他的州是美国州，则不需要其他州字段。以下是我的代码；

models.py

class User(models.Model):
    First_Name = models.CharField(max_length=100)
    Last_Name = models.CharField(max_length=100)
    Date_of_Birth = models.DateField()
    State_of_Origin = models.CharField(max_length=50, choices=STATE_CHOICES)
    Other_State = models.CharField(max_length=50, null=True)
    Marita_status = models.CharField(max_length=50, choices=STATUS_CHOICES)
    Country = CountryField(default='US')
    Email = models.EmailField(unique=True)
    Phone_Number = PhoneNumberField("Phone Number(+1..)", default='+1')

Form.py

class RegForm(forms.ModelForm):
    Date_of_Birth = forms.DateField(widget=AdminDateWidget())
    #Other_State = forms.CharField(max_length=50, required=False)

    class Meta():
        model = User
        fields = '__all__'

    def clean_State_of_Origin(self):
        State_of_Origin = self.cleaned_data['State_of_Origin']
        return State_of_Origin

    def clean_Other_State(self):
        Other_State = self.cleaned_data['Other_State']
        if Other_State != 'Other':

            self.Other_State = forms.CharField(max_length=50, required=False)
        else:
            raise forms.ValidationError("Name is invalid")

【问题讨论】：

标签： python django forms validation django-models

【解决方案1】：

def clean(self):
        Other_State = self.cleaned_data['Other_State']
        State_of_Origin = self.cleaned_data['State_of_Origin']
        if State_of_Origin == 'Other':
            if not Other_State:
               raise forms.ValidationError('Write Other State name because you selected other option from state of origin dropdown')
        return Other_State

【讨论】：

感谢 NeErAj KuMaR，您的解决方案有效。我不得不从你的代码中删除“return Other_State”，因为我得到 'str' object has no attribute 'get' 错误。

【解决方案2】：

当验证字段相互对抗时，您需要使用 clean 方法。像这样的：

class RegForm(forms.ModelForm):
    Date_of_Birth = forms.DateField(widget=AdminDateWidget())
    Other_State = forms.CharField(max_length=50, required=False)

    class Meta():
        model = User
        fields = '__all__'

    def clean(self):
        Other_State = self.cleaned_data['Other_State']
        if Other_State != 'Other':
            self.add_error('Other_State', "Name is invalid")

类似的东西应该让你开始。

另外，尝试使用 pep8 变量名。 date_of_birth 而不是 Date_of_Birth

【讨论】：