Django 表单验证错误显示 Django 调试页面

Question

我有一个注册视图，其中包含电子邮件、密码、确认密码和额外的字符串，这些字符串必须是唯一的。我所有的验证错误都正确返回（例如，如果电子邮件重复，它显示这必须是唯一的，如果密码不匹配则显示密码不匹配）。但是，额外的字符串会显示带有验证错误的 Django 调试页面，而不是将其显示到表单中。为什么会这样？

Django调试页面报错：

ValidationError at /signup/

['Extra string must be unique.']

模板摘录：

                    {% for field in form %}

                        <div class="form-group">

                            {% for error in field.errors %}

                                <p style="color: red">{{ error }}</p>

                            {% endfor %}

                            <label for="{{ field.id_for_label }}">{{ field.label }}:</label>

                            {{ field }}

                        </div>

                    {% endfor %}

形式：

class UserCreationForm(forms.ModelForm):

    password1 = forms.CharField(label='Password', widget=forms.PasswordInput(attrs={'class': 'form-control'}))

    password2 = forms.CharField(label='Password confirmation', widget=forms.PasswordInput(attrs={'class': 'form-control'}))

    email = forms.CharField(label='Email', widget=forms.EmailInput(attrs={'class': 'form-control'}))

    extra_string = forms.CharField(label='Extra String (Must be unique)', widget=forms.TextInput(attrs={'class': 'form-control'}))

    class Meta:

        model = User

        fields = ('email',)

    def clean_password2(self):

        """A function to check that the two passwords provided by the user match."""

        # Check that the two password entries match

        #: User's password.

        password1 = self.cleaned_data.get("password1")

        #: Password confirm.

        password2 = self.cleaned_data.get("password2")

        if password1 and password2 and password1 != password2:

            raise forms.ValidationError("The passwords must match.") #: This displays properly

        return password2

    def ensure_unique_string(self):

        """Checks that the entered extra string is unique"""

Answer 1

因为你在保存方法中提出，当你在保存时，告诉你所有的字段都是有效的，所以你需要在调用保存方法之前验证你的字段。你有 2 个解决方案：在 clean_FIELD_NAME 中：&nbsp; &nbsp;def clean_extra_string(self, data):&nbsp; &nbsp; &nbsp; &nbsp; if len(ExtraString.objects.filter(name=data)) > 0:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; raise forms.ValidationError("Ana Group Name must be unique.")&nbsp; &nbsp; &nbsp; &nbsp; return data在验证方法中：&nbsp;def validate(self, validate_data):&nbsp; &nbsp; &nbsp; &nbsp; if len(ExtraString.objects.filter(name=validate_data['extra'])) > 0:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; raise forms.ValidationError("Ana Group Name must be unique.")&nbsp; &nbsp; return validate_data