Django cleaned_data.get（'obj'）方法不返回任何内容 [英] Django cleaned_data.get('obj') method returns none

问题描述

我正在用django写一些密码确认表。但是我很困惑，因为 self.cleaned_data.get（'confirm_password'）始终不返回任何值，因此我的密码永远不会相互匹配。

I'm doing a little password confirmation form in django. But Im confused as the self.cleaned_data.get('confirm_password') always returns none and hence my passwords never match to one another.

在 forms.py

def clean_password(self):
    password = self.cleaned_data.get("password")
    confirm_password = self.cleaned_data.get("confirm_password")
    if password != confirm_password:
        print(password)
        print(confirm_password)
        raise forms.ValidationError(
        "Password and password confirmation does not match"
        )
    return password

self.cleaned_data .get（'password'）返回键入的密码，但confirm_password不返回。

self.cleaned_data.get('password') returns the typed password but the confirm_password doesnt.

在 view.py 当我在清理之前看到收到的数据时，confirm_password会按原样显示

In the view.py when I see the received data before cleaning, the confirm_password shows as it is

......................user = UserRegister(request.POST)
        print(request.POST.get('confirm_password'))

        if user.is_valid():
            print('valid')..........................

这可能是什么原因？

在 forms.py 中有表单声明部分

first_name = forms.CharField(required=True, widget=forms.widgets.TextInput(attrs={'placeholder': 'First Name'}))
last_name = forms.CharField(required=True, widget=forms.widgets.TextInput(attrs={'placeholder': 'Last Name'}))
username = forms.CharField(required=True, widget=forms.widgets.TextInput(attrs={'placeholder': 'Username'}))
email = forms.EmailField( required=True, widget=forms.widgets.EmailInput(attrs={'placeholder': 'Email'}))
password =forms.CharField(required=True, widget=forms.widgets.PasswordInput())
confirm_password =forms.CharField(required=True, widget=forms.widgets.PasswordInput())

class Meta:
    model=User
    fields=['first_name','last_name','username','email','password','confirm_password']

推荐答案

clean_fieldname 按字段声明顺序调用的方法，因此目前 clean_password 被称为 cleaned_data 不包含 confirm_password 。您可以使用 clean_confirm_password 方法执行此验证：

clean_fieldname methods called in order of fields declaration, so at the moment clean_password is called cleaned_data does not contain confirm_password. You can perform this validation in clean_confirm_password method:

def clean_confirm_password(self):
    password = self.cleaned_data.get("password")
    confirm_password = self.cleaned_data.get("confirm_password")
    if password != confirm_password:
        print(password)
        print(confirm_password)
        raise forms.ValidationError(
        "Password and password confirmation does not match"
        )
    return password

或仅使用 clean 方法进行验证，该方法需要访问多个表单字段。

or just use clean method for validation that requires access to multiple form fields.

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