Question

我正在创建一个网站，用户可以在其中发布内容，每个内容都会重定向到私人用户进行用户聊天，具体取决于内容ID。

我这样做，所以我可以在私人聊天中检索内容信息。

问题是当用户提交表单以发布comment时，我收到此错误：

无法指定＆＃34;＆lt;用户：my_user＆gt;＆＃34;：＆＃34; userComment.seller＆＃34;必须是＆＃34;简介＆＃34;实例

在我看来，我将关联用户保存为buyer，并将用seller收到评论的用户。

如何修复此错误？我在下面的代码上做错了什么？

这里是 models.py ：

class Profile(models.Model):
    name = models.CharField(max_length=120)
    user = models.OneToOneField(User, null=True, blank=True)

class Gig(models.Model):
    profile = models.ForeignKey(Profile, null=True)
    title = models.CharField(max_length=100, unique=True)

class userComment(models.Model):
    buyer = models.ForeignKey(User, related_name="buyer", null=True)
    seller = models.ForeignKey(Profile, related_name="seller", null=True)
    comment = models.TextField(max_length=255, null=True)

views.py

def addComment(request, gig_id):
    gig = Gig.objects.get(id=gig_id)
    username = gig.profile.user

    if request.method == 'POST':
        form = userCommentForm(request.POST, request.FILES)
        if form.is_valid():
            form.save(buyer=request.user)
            return HttpResponseRedirect('/')

    else:
        form = userCommentForm()
        form.fields['seller'].initial = username

forms.py

class userCommentForm(forms.Form):
    seller = CommaSeparatedUserField(label=_(u"seller"))
    comment = forms.CharField(label=_(u"comment"), widget=forms.Textarea())

    def save(self, buyer):
        sellers = self.cleaned_data['seller']
        comment = self.cleaned_data['comment']
        message_list = []
        for seller in sellers:
            msg = userComment(buyer=buyer, seller=seller, comment=comment,)

            if seller == buyer:
                print('-----------------------------------------------')
                print('same')

            if None is not None:
                msg.parent_msg = None
                None.save()
            msg.save()
            message_list.append(msg)

        return message_list

追溯：

File "C:\Python34\projects\tryTen\private_comment\views.py" in addComment
  31.             form.save(buyer=request.user)

File "C:\Python34\projects\tryTen\private_comment\forms.py" in save
  15.             msg = userComment(buyer=buyer, seller=seller, comment=comment,)

Answer 1

您的userComment模型将feild seller作为另一个名为Profile的模型的外键。但是，msg = userComment(buyer=buyer, seller=seller, comment=comment,)中传递的买方实例属于User类型而非Profile类型。

要么修改 seller = models.ForeignKey(Profile, related_name="seller", null=True)到seller = models.ForeignKey(User, related_name="seller", null=True) 要么检索并传递Profile实例。

p = Profile.objects.get(user=seller)
msg = userComment(buyer=buyer, seller=p, comment=comment)

Answer 2

您的CommaSeparatedUserField用户字段似乎是您尚未与我们分享的自定义字段。但是，很容易看出您的cleaning_data实际上是卖家名称列表而不是Seller个实例。如果另一方面它包含id，你可以这样做：

msg = userComment(buyer=buyer, seller_id=seller, comment=comment,)

如果它只是名称

sl = Profile.objects.get(name=seller)  # adjust this according to your model
msg = userComment(buyer=buyer, seller_id=sl, comment=comment,)

无法分配必须是表单上的实例保存

2 个答案: