Question

my forms.py:

from django import forms
from django.contrib.auth import authenticate, get_user_model
from django.contrib.auth.models import User
from django.forms import ModelForm
from django.utils.text import capfirst
from .models import Classname, Sectionname, Teachername, Attendancename

class AuthenticationForm(forms.Form):
    username = forms.CharField(max_length=20)
    password = forms.CharField(widget=forms.PasswordInput)
    error_messages = {
        'invalid_login': ("Please enter a correct %(username)s and password."
                          "Note that both fields may be case-sensitive."),
        'inactive': ("This account is inactive"),
    }

    def __init__(self, request=None, *args, **kwargs):
        self.request = request
        self.user_cache = None
        super(AuthenticationForm, self).__init__(*args, **kwargs)

        UserModel = get_user_model()
        self.username_field = UserModel._meta.get_field(UserModel.USERNAME_FIELD)
        if self.fields['username'].label is None:
            self.fields['username'].label = capfirst(self.username_field.verbose_name)

    def clean(self):
        username = self.cleaned_data.get('username')
        password = self.cleaned_data.get('password')

        if username and password:
            self.user_cache = authenticate(username=username, password=password)

            if self.user_cache is None:
                raise forms.ValidationError(
                    self.error_messages['invalid_login'],
                    code='invalid_login',
                    params={'username': self.username_field.verbose_name},
            )
            else:
                self.confirm_login_allowed(self.user_cache)

        return self.cleaned_data

     def confirm_login_allowed(self, user):
        if not user.is_active:
            raise forms.ValidationError(
                self.error_messages['inactive'],
                code='inactive',
                )

    def get_user_id(self):
        if self.user_cache:
            return self.user_cache.id
        return None

    def get_user(self):
        return self.user_cache

views.py：

@csrf_protect
@never_cache
def login(request, template_name='login.html',
      authentication_form=AuthenticationForm,
      extra_context=None):

    if request.method == "POST":
        form = authentication_form(request, data=request.POST)
        if form.is_valid():
            return HttpResponseRedirect(reverse('student:mains'))

        else:
            print(form.errors)  
    else:
        form = authentication_form(request)

    context = {
        'form': form,
    }

    return TemplateResponse(request, template_name, context)

我的登录模板：

<html>
<head><title>Login</title></head>
<strong> Mysite Login </strong>
<br><br>
<h3> Please Enter your credentials carefully </h3>
<body>

{% if form.errors %}
    <p>NOT VALID</p>
    {% for errors in form.errors %}
        {{ errors }}
    {% endfor %}
{% endif %}
<form method="post">
    {% csrf_token %}
    <label>Username: </label>
    <input type="text">
    <br>
    <label>Password: </label>
    <input type="password">
    <br>
    <input type="submit" value="Login">
</form>

</body>     
</html>

my urls.py:

from django.conf.urls import url, patterns
from django.contrib.auth import views as auth_views
from . import views

urlpatterns = [
    url(r'^register/$', views.register, name='register'),
    url(r'^login/$', views.login, name='login'),
    url(r'^logout/$', views.logout, name='logout'),
    url(r'^password_change/$', auth_views.password_change, {'template_name': 'password_change_form.html', 'post_change_redirect': '/stu/password_change/done/'}, name="password_change"),
    url(r'^password_change/done/$', auth_views.password_change_done, {'template_name': 'password_change_done.html'}, name="password_change_done"),
    url(r'^restricted/', views.restricted, name='restricted'),
    url(r'^mains/', views.mains, name = 'mains'),
]

我正在尝试在我的项目上实现django身份验证。我已经阅读了一些文档并制作了上述认证视图和表单。

问题是，当我使用正确的凭据提交登录表单时，它不会将我重定向到我的视图中指定的重定向位置。它没有做任何事情。

这是我尝试做的正确方法吗？因为我没有在这里使用模型表格。

请建议我纠正它的方法......

谢谢！提前...

仍面临同样的问题......

Answer 1

改变这个：

<form method="post">
<label>Username: </label>
<input name="name">

<label>Password: </label>
<input name="phone">

to，

<form method="post" action="{% url 'login_url_name' %}">

<label>Username: </label>
<input name="username">

<label>Password: </label>
<input name="password">

Answer 2

调试建议：

确保在提交表单时点击了正确的视图。怎么样？在login()的开头添加调试日志¹。如果您在提交时未看到日志记录，请务必将<form>的{{1}}属性设置为正确的网址。
确保您的表单通过action测试。在视图中的is_valid()分支内添加调试日志记录。如果它不起作用，请确保凭据正确无误。转储if form.is_valid():以查看表单提交的数据可能出现的问题。

¹在您的代码中，调试日志记录可能只是一个简单的request.POST。目的只是查看您的代码是否到达相关分支。如果你看到Django对你大喊大叫，你肯定会这样做。

django-auth登录未按预期工作

2 个答案: