Cookiecutter-Django自定义User模型invitation_code字段无法存入数据库

我在使用Cookiecutter-Django时遇到问题：已在users.models.User中添加invitation_code字段，代码如下：

class User(AbstractUser):
    """
    Default custom user model for pintable.
    If adding fields that need to be filled at user signup,
    check forms.SignupForm and forms.SocialSignupForms accordingly.
    """

    #: First and last name do not cover name patterns around the globe
    name = CharField(_("Full name"), max_length=255, null=True, blank=True)
    first_name = None  # type: ignore
    last_name = None  # type: ignore

    invitation_code = CharField(
        _("Invitation code"), max_length=8, null=True, blank=True
    )

随后在users.forms.UserSignupForm中添加该字段，代码如下：

class UserSignupForm(SignupForm):
    """
    Form that will be rendered on a user sign up section/screen.
    Default fields will be added automatically.
    Check UserSocialSignupForm for accounts created from social.
    """

    invitation_code = CharField(
        label=_("Invitation code"),
        widget=TextInput(attrs={"placeholder": _("Invitation code")}),
    )

但新用户保存到数据库时，invitation_code字段始终为None，请问我遗漏了什么？

Cookiecutter-Django的SignupForm不会自动将自定义表单字段的值同步到用户模型，必须重写表单的save方法手动处理：

修改UserSignupForm，添加save方法：

class UserSignupForm(SignupForm):
    """
    Form that will be rendered on a user sign up section/screen.
    Default fields will be added automatically.
    Check UserSocialSignupForm for accounts created from social.
    """

    invitation_code = CharField(
        label=_("Invitation code"),
        widget=TextInput(attrs={"placeholder": _("Invitation code")}),
    )

    def save(self, request):
        # 调用父类方法创建用户实例
        user = super().save(request)
        # 将表单清洗后的邀请码赋值给用户
        user.invitation_code = self.cleaned_data.get("invitation_code")
        user.save()
        return user

额外注意事项：

• 如果邀请码是必填项，给表单的invitation_code字段添加required=True，防止提交空值
• 确认已执行数据库迁移：运行python manage.py makemigrations和python manage.py migrate，确保字段已同步到数据库表中

内容的提问来源于stack exchange，提问作者masavini