扩展form.is_valid（） [英] Extending form.is_valid()

问题描述

我正在学习Django，偶然发现了需要帮助的地方：

I am learning Django, and i stumbled upon something that I need help with:

forms.py

class UserForm(forms.ModelForm):
    password1 = forms.CharField(widget=forms.PasswordInput())
    password2 = forms.CharField(widget=forms.PasswordInput())

    class Meta:
        model = User
        fields = ('username', 'email', 'password1','password2')

    def password_matched(self):
        if self.data['password1'] != self.data['password2']:
            self.errors['password'] = 'Passwords do not match'
            return False
        else:
            return True

    def is_valid(self):
        valid = super(UserForm,self).is_valid()
        password_matched = self.password_matched()
        if valid and password_matched:
            return True
        else:
            return False

views.py

def register(request):
     #blah...
     user.set_password(user.password)
     # user.set_password(user.password1) doesn't work ! WHY!?

所以基本上，我在检查 pw1 == pw2 ，

检查后，我希望将用户密码设置为password1。

我最初使用 user.set_password（user.password1）行，但是它抱怨User对象没有 password1 ，但是当我使用 password 。

So basically, I am checking if pw1 == pw2,
after checking, I wish to set the user's password to password1.
I initially used the line user.set_password(user.password1) but it complained that User object doesn't have password1, yet it worked when I used password.

为什么？谢谢。

推荐答案

为此，您最好使用 clean 方法，并且永远不要触摸 is_valid 方法。

You should be ideally using the clean method for this, and never be touching the is_valid method.

类似这样的事情：

def clean(self):
    cd = self.cleaned_data

    password1 = cd.get("password1")
    password2 = cd.get("password2")

    if password1 != password2:
        #Or you might want to tie this validation to the password1 field
        raise ValidationError("Passwords did not match")



    return cd

现在，在视图中

def register(request):
   #blah...
   form = UserForm(request.POST or None)
   if request.method == "POST":
       if form.is_valid(): #This would call the clean method for you
           user = User.objects.create(...)
           user.set_password(form.cleaned_data.get("password1"))
           user.save()
       else: #Form is invalid
           print form.errors #You have the error list here. 

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