如何在 django auth 密码验证器旁边使用自定义密码验证器?

2022-01-22 00:00:00 python validation django registration passwords

问题描述

正如上面提到的问题，我将尝试在注册过程中使用某个额外的规则来验证密码.额外的规则应该是验证密码是否至少包含一个数字、一个字母和一个特殊字符.

As the question above mentioned, I will trying to use a certain extra rule to validate a password during the registration process. The extra rule should be that a password is validate if it has at least one digit, one letter and one special character.

我解决这个问题的方法我创建了一个名为validators.py 的文件.

My approach to solute this problem I've created a file named validators.py. 

from django.core.exceptions import ValidationError

class CustomPasswortValidator:

    def validate(value):

      # check for digit
      if not any(char.isdigit() for char in value):
          raise ValidationError(_('Password must contain at least 1 digit.'))

      # check for letter
      if not any(char.isalpha() for char in value):
          raise ValidationError(_('Password must contain at least 1 letter.'))

      # check for special character
      special_characters = "[~!@#$%^&*()_+{}":;'[]]"
      if not any(char in special_characters for char in value):
        raise ValidationError(_('Password must contain at least 1 letter.'))

我的自定义注册表如下所示:

My custom registration form looks like this: 

from django import forms
from django.contrib.auth.forms import UserCreationForm
from django.contrib.auth.models import User


class RegistrationForm(UserCreationForm):
    first_name = forms.CharField(max_length=30, required=False,                                         
                                 help_text='Optional.')
    last_name = forms.CharField(max_length=30, required=False, 
                                 help_text='Optional.')
    email = forms.EmailField(max_length=254, help_text='Required. Inform a valid email address.')

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

我不明白我是如何告诉 django，我的自定义密码验证器应该在 django AUTH_PASSWORD_VALIDATORS 旁边使用.

I don't get it how I tell django, that my custom password validator should be use beside the django AUTH_PASSWORD_VALIDATORS.

解决方案

所以，正如 e4c5 提到的，它真的很简单明了.

So, as e4c5 mentioned, it is really simple and straightforward.

我的 CustomPasswordValidator 看起来像这样:

My CustomPasswordValidator looks like this: 

from django.core.exceptions import ValidationError
from django.utils.translation import ugettext as _

class CustomPasswordValidator():

    def __init__(self, min_length=1):
        self.min_length = min_length

    def validate(self, password, user=None):
        special_characters = "[~!@#$%^&*()_+{}":;'[]]"
        if not any(char.isdigit() for char in password):
            raise ValidationError(_('Password must contain at least %(min_length)d digit.') % {'min_length': self.min_length})
        if not any(char.isalpha() for char in password):
            raise ValidationError(_('Password must contain at least %(min_length)d letter.') % {'min_length': self.min_length})
        if not any(char in special_characters for char in password):
            raise ValidationError(_('Password must contain at least %(min_length)d special character.') % {'min_length': self.min_length})

    def get_help_text(self):
        return ""

只需将其添加到 settings.py 中的 AUTH_PASSWORD_VALIDATORS 列表即可！

Just add it to the list of AUTH_PASSWORD_VALIDATORS in settings.py and that's it!

AUTH_PASSWORD_VALIDATORS = [
{
    'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
    'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
},
{
    'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
    'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
},
{   'NAME': 'registration.validators.CustomPasswordValidator',

},]

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