使用 Bootstrap 5 进行 Django 表单验证

Question

我想用 bootstrap 5 创建 django 登录表单。如何确保表单有效？我可以在模板中使用引导程序设置 raise validationError 的样式吗？

这是我的代码：

forms.py

class LoginForm(forms.Form):
username = forms.CharField()
password = forms.CharField()

def clean(self):
    username = self.cleaned_data.get("username")
    password = self.cleaned_data.get("password")
    # Check if user and password is matching and exists
    user = authenticate(username=username, password=password)
    if not user:
        raise forms.ValidationError("This is an invalid user.")

login_page.html

<form method="POST" class="row g-3 needs-validation" novalidate>
            {% csrf_token %}
              <input type="text" name="username" class="form-control" placeholder="Username" required>
              <div class="invalid-feedback">{{ #raise ValidationError here }}</div>
              <input type="password" name="password" class="form-control" placeholder="Password" required>
              <div class="invalid-feedback">{{ #raise ValidationError here }}</div>
              <input class="btn btn-primary" type="submit" value="Login">

我可以这样做吗？还是有更好的解决方案来创建登录表单验证？ 谢谢。

Answer 1

你可以像这样在你的 forms.py 中通过验证

forms.py

 class LoginForm(forms.Form):
        username = forms.CharField()
        password = forms.CharField(widget=forms.PasswordInput)
    
        def clean(self, *args, **kwargs):
            username = self.cleaned_data.get("username")
            password = self.cleaned_data.get("password")
            if username and password:
                user = authenticate(username=username, password=password)
                if not user:
                    raise forms.ValidationError("This user doesn't exist")
                if not user.check_password(password):
                    raise forms.ValidationError("Incorrect Password")
                if not user.is_active:
                    raise forms.ValidationError("User no longer Active")
            return super(LoginForm,self).clean(*args,**kwargs)