从 Django 登录表单中的电子邮件中删除区分大小写

Question

我创建了一个自定义 UserModel 并使用电子邮件作为主要的身份验证 ID 而不是用户名。

它区分大小写的问题，因为它将 test@gmail.com,Test@gmail.com 计为 2 个不同的帐户。

我需要强制它处理 1 个帐户，而忽略它是大写还是小写。

这是我的文件：

模型.py

class UserModelManager(BaseUserManager):
    def create_user(self, email, password, pseudo):
        user = self.model()
        user.name = name
        user.email = self.normalize_email(email=email)
        user.set_password(password)
        user.save()

        return user

    def create_superuser(self, email, password):
        '''
        Used for: python manage.py createsuperuser
        '''
        user = self.model()
        user.name = 'admin-yeah'
        user.email = self.normalize_email(email=email)
        user.set_password(password)

        user.is_staff = True
        user.is_superuser = True
        user.save()

        return user


class UserModel(AbstractBaseUser, PermissionsMixin):
    ## Personnal fields.
    email = models.EmailField(max_length=254, unique=True)
    name = models.CharField(max_length=16)
    ## [...]

    ## Django manage fields.
    date_joined = models.DateTimeField(auto_now_add=True)
    is_active = models.BooleanField(default=True)
    is_staff = models.BooleanField(default=False)

    USERNAME_FIELD = 'email'
    REQUIRED_FIELD = ['email', 'name']

    objects = UserModelManager()

    def __str__(self):
        return self.email

    def get_short_name(self):
        return self.name[:2].upper()

    def get_full_name(self):
        return self.name

views.py 中的注册视图

def signup(request):
    if request.method == 'POST':
        signup_form = SignUpForm(request.POST)
        if signup_form.is_valid():
            signup_form.save()
            username = signup_form.cleaned_data.get('username')
            raw_password = signup_form.cleaned_data.get('password1')
            user = authenticate(username=username, password=raw_password)
            return redirect('signup_confirm')
    else:
        signup_form = SignUpForm()

    context = {
        'signup_form': signup_form,
    }
    return render(request, 'fostania_web_app/signup.html', context)


def signup_confirm(request):
    return render(request, 'fostania_web_app/signup_confirm.html')

forms.py 中的注册表单：

class SignUpForm(UserCreationForm):
    email = forms.CharField(required=True, help_text='?????? ?????????? ????? ?? - ??? ?? ???? ????? (?????? ?????? ??????) ')
    name = forms.CharField(required=True, help_text='???? ??????? -  ????? ???? ??????')
    password1 = forms.CharField(widget=forms.PasswordInput,
                                help_text='???? ?????? - ???? ?? ???? ???? ?????? ??????? ??')
    password2 = forms.CharField(widget=forms.PasswordInput,
                                help_text='????? ???? ?????? - ???? ??? ???? ?????? ??????? ??? ????')

    class Meta:
        model = UserModel
        fields = ('email','name',  'password1', 'password2', )
        labels = {
            'name': '???? ??????? -  ????? ???? ??????',
            'email': '?????? ?????????? Email',
            'password1': '???? ??????',
            'password2': '????? ???? ??????'
        }

我现在需要做的就是让它忽略大小写敏感。

更新

这是我的登录文件

网址.py

   path('login/', auth_views.login, name='login'),

注册/登录.html

    <form method="post">
    {% csrf_token %}
    ?????? ?????????? E-Mail &nbsp;<Br>{{ form.username }}
                    <br><br>
                     ???? ?????? &nbsp;<Br>{{ form.password }}
                    <Br><br>
      <div align="center">
    <button class ="btn btn-primary" submit>????? ??????</button><br><br>
      <a href="{% url 'signup' %}"><button type="button" class="btn btn-warning">
          ????? ???? ????</button></a>
          </div>

  </form>

Answer 1

如果您不介意丢失用户输入电子邮件的格式，那么更简洁的方法可能是覆盖模型字段本身。

这对我来说效果更好，因为我只需要在一个地方更改它。否则，您可能需要担心注册、登录、用户更新、API 视图等。

这只会小写任何保存到UserModel.

from django.db import models


class LowercaseEmailField(models.EmailField):
    """
    Override EmailField to convert emails to lowercase before saving.
    """
    def to_python(self, value):
        """
        Convert email to lowercase.
        """
        value = super(LowercaseEmailField, self).to_python(value)
        # Value can be None so check that it's a string before lowercasing.
        if isinstance(value, str):
            return value.lower()
        return value

您的用户模型将是..

# Assuming you saved the above in the same directory in a file called model_fields.py
from .model_fields import LowercaseEmailField

class UserModel(AbstractBaseUser, PermissionsMixin):
    email = LowercaseEmailField(unique=True)
    # other stuff...

Answer 2

您不需要进行太多更改即可完成此操作 - 在您的情况下，您只需要更改表单并使用 Django 的内置表单数据清理器或创建自定义字段。

您应该使用EmailField代替 aCharField进行内置验证。此外，您没有发布您的 AuthenticationForm，但我认为您已将其更改为 includeemail而不是username.

使用数据清理器：

class SignUpForm(UserCreationForm):
    # your code
    email = forms.EmailField(required=True)
    def clean_email(self):
        data = self.cleaned_data['email']
        return data.lower()

class AuthenticationForm(forms.Form):
    # your code
    email = forms.EmailField(required=True)
    def clean_email(self):
        data = self.cleaned_data['email']
        return data.lower()

使用自定义字段：

class EmailLowerField(forms.EmailField):
    def to_python(self, value):
        return value.lower()

class SignUpForm(UserCreationForm):
    # your code
    email = EmailLowerField(required=True)

class AuthenticationForm(forms.Form):
    # your code
    email = EmailLowerField(required=True)

通过这种方式，您可以确保每封电子邮件都以小写形式保存到您的数据库中，并且对于每次登录尝试，电子邮件在与数据库值进行比较之前都是小写的。