在我的django authenticationform中，用户名和密码总是不正确

Question

我正在尝试通过用户名和密码登录用户，但是当我尝试检查form.is_valid（）时，它会返回false。错误列表包含错误：“请输入正确的用户名和密码。请注意，这两个字段都可能对大小写。”。当我不指定自己的帖子时，它也行不通。

我一直在寻找错字，但没有找到。在互联网中，没有任何帮助。 我尝试了开关表格和字段，但是错误是相同的。

views.py：

from django.views.generic import *
from django.views.generic import *
from django.contrib.auth.forms import AuthenticationForm
from django.contrib.auth import authenticate, login, logout

...
class RegisterView(CreateView):
    form_class = UserRegisterForm
    success_url = reverse_lazy('main:homepage')
    template_name = "accounts/register.html"

    def post(self, request):
        form = self.get_form()
        if form.is_valid():
            user = form.save()
            login(request, user)
            return redirect("main:homepage")
        else:
            print(form.errors)
            return redirect("accounts:register")

class LoginView(FormView):
    form_class = AuthenticationForm
    template_name = "accounts/login.html"

    def post(self, request):
        form = self.get_form()
        if form.is_valid():
            form.clean()
            user = authenticate(
                request, 
                username=form.cleaned_data["username"], 
                password=form.cleaned_data["password"],
            )
            login(request, user)
            return redirect("main:homepage")
        else:
            print(form.errors)
            print(form.cleaned_data)
            
            return redirect("accounts:login")

forms.py：

from django import forms
from django.contrib.auth import get_user_model, authenticate, login
from django.contrib.auth.forms import UserCreationForm, AuthenticationForm

class UserRegisterForm(UserCreationForm):
    email = forms.EmailField()

    class Meta:
        model = get_user_model()
        fields = ['username', 'email', 'first_name']


    def save(self):
        self.clean()
        user = self.Meta.model(
            username = self.cleaned_data['username'], 
            email = self.cleaned_data['email'], 
            password = self.cleaned_data['password2'], 
        )
        user.save()
        return user

login.html：

<div class="wrap">
    <form method="POST">
        {% csrf_token %}
        {{ form.as_p }}
        <button type="submit">CONFIRM LOGIN</button>
    </form>
</div>

Answer 1

您的代码片段都是正确的，但是保存用户密码的方法在从Via Save方法中，保存密码的方式不正确，如果您想检查密码，它将密码的原始文本形式保存到数据库中。 ，只需打开您的数据库并检查密码字段，它们以原始文本格式存储（Exapmle：testing123），其中Django保存，检索，使用密码的SHA256的密码，直到和除非您没有指定它，否则PBKDF2_SHA256 ...这种格式。

不要这样的用户：

user = User(username = username , password = password , email = email)
user.save()

像这样

user = User(username = username , email = email)
user.set_password(password)
user.save()

更新您的代码段：

from django import forms
from django.contrib.auth import get_user_model, authenticate, login
from django.contrib.auth.forms import UserCreationForm, AuthenticationForm

class UserRegisterForm(UserCreationForm):
    email = forms.EmailField()

    class Meta:
        model = get_user_model()
        fields = ['username', 'email', 'first_name']


    def save(self):
        self.clean()
        user = self.Meta.model(
            username = self.cleaned_data['username'], 
            email = self.cleaned_data['email'], 
        )
        user.set_password(self.cleaned_data['password2'])
        user.save()
        return user

这将完成所需的工作。

Answer 2

class UserRegisterForm(UserCreationForm):
    email = forms.EmailField()

    class Meta:
        model = get_user_model()
        fields = ['username', 'email', 'first_name']


    def save(self):
        self.clean()
        user = self.Meta.model(
            username = self.cleaned_data['username'], 
            email = self.cleaned_data['email'], 
        )
        # Set password with method is solution
        user.set_password(self.cleaned_data['password2']) 
        user.save()
        return user

Answer 3

之所以没有起作用，是因为密码是 hashed ，并且您的 userRegisterform 无法正确放置密码。但是，无需覆盖 .save（…）方法。 django's ＆nbsp; ^[django-doc] 已经正确处理了这一点，因为它是 modelform ＆nbsp; ^{[django-- doc]} ，所以：

from django.contrib.auth import get_user_model
from django.contrib.auth.forms import UserCreationForm

class UserRegisterForm(UserCreationForm):
    email = forms.EmailField()

    class Meta:
        model = get_user_model()
        fields = ['username', 'email', 'first_name']
    
    # no override of save