Django:带有附加字段的CreateView？

Question

我正在尝试编写一个Django CreateView(CBV),它取代用户id而不是用户电子邮件,并根据电子邮件确定(或创建)用户.

我的模型不包含任何特殊内容:

class Project(models.Model):
    name = models.CharField(_('Title'), max_length=100,)
    user = models.ForeignKey(User, verbose_name=_('user'),)
    ...

我的forms.py将额外的电子邮件字段添加到表单中:

class ProjectCreateForm(forms.ModelForm):
    email = forms.EmailField(required=True, )

    class Meta:
        model = Project
        fields = ('name', ...,)

在我的views.py中,我试图确定用户是否存在或是否应该创建.在这两种情况下,用户标识都应保存为Project实例的一部分.

class ProjectCreateDetails(CreateView):
    form_class = ProjectCreateForm
    template_name = '...'
    success_url = reverse_lazy('login') 
    model = Project

    def form_valid(self, form):
        try:
            user = User.objects.get(email=form.email)
        except User.DoesNotExist:
            user = User.objects.create_user(form.email, form.email, ''.join([random.choice(string.digits + string.letters) for i in range(0, 10)]))
            user.save()
        form.instance.user = user
        return super(ProjectCreateDetails, self).form_valid(form)

但是我面临一个错误'Solution' object has no attribute 'email'.

我是否需要切换到FormView而不是CreateView？

Answer 1

您收到错误,'Solution' object has no attribute 'email'因为form.email无效.验证数据永远不可用作表单或模型表单的属性.当表单(包括模型表单)有效时,成功验证的数据在form.cleaned_data字典中可用.

请注意,您无需致电user.save().该create_user调用已将用户添加到数据库中.您不必生成随机密码 - 如果password是None,create_user则将设置不可用的密码.

最后,确保您没有在该user字段中包含该字段ProjectCreateForm.你可能没有,但是你的代码说的fields = ('name', ...,)是我无法确定的.

把它放在一起,你会得到以下(未经测试的)代码:

def form_valid(self, form):
    try:
        user = User.objects.get(email=form.cleaned_data['email'])
    except User.DoesNotExist:
        user = User.objects.create_user(form.cleaned_data['email'], form.cleaned_data['email']) 
    form.instance.user = user
    return super(ProjectCreateDetails, self).form_valid(form)