Django ModelForm - 使用外键创建实例

Question

我想知道用django模型形式创建模型实例的正确方法是什么时候它包含一个必需的FK？我认为它可能与excludeclass属性有关,但在视图中我尝试在保存之前覆盖它.

模型:

 class Profile(models.Model):
    client = models.OneToOneField('auth.User')
    first_name = models.TextField(blank=True,)
...

形成:

class ProfileForm(floppyforms.ModelForm):
    class Meta:
        exclude = ('client',)
        model = Profile

        widgets = {
            'first_name': floppyforms.TextInput(attrs={'placeholder': 'First Name'}),
...

视图:

def post(self, request):
    form = ProfileForm(request.POST)
    if form.is_valid():
        form.save(commit=False)
        form.client = User.objects.create(username=request.POST['email'],)
        form.save()
        return redirect('/success')
    return redirect('/error')

错误:

django.db.models.fields.related.RelatedObjectDoesNotExist: Profile has no client.

查看Admin,我可以看到用户已经创建了.

干杯

Answer 1

您的views.py中有错误.它应该是:

def post(self, request):
    form = ProfileForm(request.POST)
    if form.is_valid():
        new_profile = form.save(commit=False)
        new_profile.client = User.objects.create(username=request.POST['email'],)
        new_profile.save()
        return redirect('/success')
    return redirect('/error')

您不应将客户端分配给表单,而应分配给内存实例new_profile,然后调用new_profile.save()以保存new_profile到数据库.