Python Django-form_valid（）变量未定义

我需要获取试图创建要存储在模型中的评论的用户的profile_id。我可以在django中为用户获取属性，但是当我尝试使用下面的内容来获取profile_id时，会出现“prof is not defined”错误

视图.py

    class ReviewCreateView(LoginRequiredMixin, CreateView):
      model = Review
      fields = ['rating', 'reviewtext']
      def get_context_data(self, **kwargs):
        context = super(ReviewCreateView, self).get_context_data(**kwargs)
        context['prof'] = Profile.objects.values_list('id', flat=True).filter(user_id=self.request.user.id)
        return context
      def form_valid(self, form):
        form.instance.product = self.request.GET.get('pk')
        form.instance.author = self.request.user
        form.instance.profile = prof
        return super().form_valid(form)

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete = models.CASCADE)

class Review(models.Model):
    product = models.ForeignKey(Product, on_delete=models.CASCADE)
    profile = models.ForeignKey(Profile, on_delete=models.CASCADE)
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    rating = models.PositiveSmallIntegerField(default=1, validators = [MinValueValidator(1), MaxValueValidator(5)])
    reviewtext = models.TextField()

class Product(models.Model):
    name = models.CharField(max_length=100)

型号.py

    class ReviewCreateView(LoginRequiredMixin, CreateView):
      model = Review
      fields = ['rating', 'reviewtext']
      def get_context_data(self, **kwargs):
        context = super(ReviewCreateView, self).get_context_data(**kwargs)
        context['prof'] = Profile.objects.values_list('id', flat=True).filter(user_id=self.request.user.id)
        return context
      def form_valid(self, form):
        form.instance.product = self.request.GET.get('pk')
        form.instance.author = self.request.user
        form.instance.profile = prof
        return super().form_valid(form)

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete = models.CASCADE)

class Review(models.Model):
    product = models.ForeignKey(Product, on_delete=models.CASCADE)
    profile = models.ForeignKey(Profile, on_delete=models.CASCADE)
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    rating = models.PositiveSmallIntegerField(default=1, validators = [MinValueValidator(1), MaxValueValidator(5)])
    reviewtext = models.TextField()

class Product(models.Model):
    name = models.CharField(max_length=100)

---

配置文件通过外键链接到用户，所以我可以只写下面的一行，在添加self.kwargs行之前，product_id也得到了一个空约束

def form_valid(self, form, **kwargs):
    form.instance.product_id = self.kwargs['pk']
    form.instance.author = self.request.user
    form.instance.profile = self.request.user.profile
    return super().form_valid(form)

---

prof

未在该函数的任何位置定义。你希望它从哪里来？有单独的用户和个人资料链接有什么意义？这些模型已经链接。@DanielRoseman因为配置文件中有我在别处使用的字段，所以我只显示与我的问题相关的字段。@JohnGordon我试图从get_context_dataWell中获取它。您仍然可以从

self.request.user.Profile

中获取它。但正如我所说，没有理由这么做。然而，您尝试执行的操作有很多问题：您没有调用

get_context_data

；如果你有，你会得到一个命令，而不是一个属性；出于某种原因，dict的

prof

键是值列表，而不是概要文件对象。