form.is_valid() 在 Django 中总是返回 False

Question

下面是我提交表单的代码。当我提交表单时，is_valid 总是返回 false 不确定我的代码是否出错。我刚刚开始学习 Django，任何帮助都非常感谢 TIA

HTML

{%extends 'base.html'%}

{% block content %}
    <div class="container">

      <form method="post" class="form-signin" action="/loginvalidation/">{% csrf_token %}
        <h2 class="form-signin-heading">Please sign in</h2>
        <label for="inputEmail" class="sr-only">Email address</label>
        <input type="email" id="inputEmail" class="form-control" placeholder="Email address" required autofocus>
        <label for="inputPassword" class="sr-only">Password</label>
        <input type="password" id="inputPassword" class="form-control" placeholder="Password" required>
        <div class="checkbox">
          <label>
            <input type="checkbox" value="remember-me"> Remember me
          </label>
        </div>
        <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
      </form>

    </div>
{% endblock %}

HTML 文件

view.py

def loginvalidation(request):
    print request
    form = LoginssForm(request.POST or None)
    print form.is_valid()
    if form.is_valid():
        save_it=form.save(commit=False)
        print save_it.email
        save_it.save()
        user = authenticate(username='john', password='secret')
        if user is not None:
    # the password verified for the user
            if user.is_active:
                print("User is valid, active and authenticated")
            else:
                print("The password is valid, but the account has been disabled!")
        else:
    # the authentication system was unable to verify the username and password
            print("The username and password were incorrect.")
    return render(request,"about-us.html",locals(), context_instance=RequestContext(request))]

查看。 py 我的代码

Model.py

class LogIn(models.Model):
    email=models.EmailField(null=False,blank=False)
    password=models.CharField(max_length=1201,null=True,blank=True)
    timestamp=models.DateTimeField(auto_now_add=True,auto_now=False)
    updated=models.DateTimeField(auto_now_add=False,auto_now=True)

应用模型 应用模型应用模型

    form.py

    class LogInForm(forms.ModelForm):
        class Meta:
            model=LogIn
            fields = '__all__'

以上是我提交表单的代码。当我提交表单时，form.is_valid 总是返回 False。我刚开始学习 Django，非常感谢任何帮助。

Answer 1

您似乎在 HTML 文件中的字段上缺少“名称”属性，因此该值实际上从未发布到 Django。如果只是将name="email" 和name="password" 分别添加到字段中，则应该传递值并开始正确验证。

不过，话虽如此，我同意 Alasdair 的上述评论。这会更安全，建议使用 Django 内置的身份验证系统。