Django：“ NOT NULL約束失敗”。user_id

Question

因此，我創建了一個名為SellPostImage的模型，以便可以將圖像上載到名為SellPost的帖子的模型中，並且我創建了兩種形式，一種名為SellForm ，具有標題，類別等，另一種形式可以處理圖像上載。稱為SellPostImage 。 該SellPost具有使用一個多到一的關系ForeignKey與User模型和SellPostImage有OneToOneField與關系SellPost模型（我已經嘗試使用ForeignKey上SellPostImage模型，但並沒有改變我的任何東西）

我不斷收到錯誤

Exception Value: NOT NULL constraint failed: esouqbahrain_sellpost.user_id

每當我嘗試提交填寫所有字段並選擇圖片的帖子時。

這是我的模型：

class UserProfile(models.Model):
    user = models.OneToOneField(User)
    pictures = models.ImageField(upload_to='profile_images', blank=True)

    def __unicode__(self):
        return self.user.username

    class Meta:
        verbose_name_plural = "User Profiles"



# Create your models here.
class Category(models.Model):
    name = models.CharField(max_length=128, unique=True)
    views = models.IntegerField(default=0)
    likes = models.IntegerField(default=0)
    slug = models.SlugField(unique=True, default='automatic')

    def save(self, *args, **kwargs):
        self.slug = slugify(self.name)
        super(Category, self).save(*args, **kwargs)

    def __unicode__(self):
        return self.name


    class Meta:
        verbose_name_plural = "Categories"

class SellPost(models.Model):
    user = models.ForeignKey(User)
    title = models.CharField(max_length=128)
    category = models.OneToOneField(Category)
    body = models.CharField(max_length=400)
    price = models.DecimalField(decimal_places=1, max_digits=5, default=0.0)
    views = models.IntegerField(default=0)
    likes = models.IntegerField(default=0)
    slug = AutoSlugField(populate_from='title', unique=True)

    def save(self, *args, **kwargs):
        self.slug = slugify(self.title)
        super(SellPost, self).save(*args, **kwargs)

    def __unicode__(self):
        return self.title

class SellPostImage(models.Model):
    post = models.OneToOneField(SellPost, null=True)
    pictures = models.ImageField(upload_to='post_images', blank=True)

    def __unicode__(self):
        return self.post.title

    class Meta:
        verbose_name_plural = "Post Images"

這是我發布表格的觀點：

@login_required
def sell(request):
    if request.method == 'POST':

        sell_form = SellForm(data=request.POST)
        image_form = SellPostImageForm(data=request.POST)


        if sell_form.is_valid() and image_form.is_valid():
            post = sell_form.save()
            post.save()
            img_form = image_form.save(commit=False)
            if 'picture' in request.FILES:
                img_form.pictures = request.FILES['picture']
            img_form.save()

    else:
        image_form = SellPostImageForm()
        sell_form = SellForm()
    return render(request, 'sell.html', {'sell_form': sell_form, 'image_form': image_form})

如果有人需要，這里是這些表格：

class SellForm(forms.ModelForm):

    title = forms.CharField(max_length=128)
    category = forms.ModelChoiceField(queryset=Category.objects.all().order_by('name'))
    body = forms.CharField(max_length=400, widget=forms.Textarea)
    price = forms.DecimalField(initial=0.0)
    views = forms.IntegerField(widget=forms.HiddenInput(), initial=0)
    likes = forms.IntegerField(widget=forms.HiddenInput(), initial=0)
    slug = forms.CharField(widget=forms.HiddenInput(), required=False)

    class Meta:
        model = SellPost
        fields = ('title', 'category', 'body', 'price',)

class SellPostImageForm(forms.ModelForm):
    class Meta:
        model = SellPostImage
        fields = ('pictures',)

先感謝您 ：）

Answer 1

您是SellPost模型，需要一個User 。 SellForm表單沒有用戶字段。 您的帖子變量是什么？