Question

models.py

class OtherData(models.Model):
    title = models.CharField(max_length=120)
    user = models.ForeignKey(settings.AUTH_USER_MODEL)

class ProductImage(models.Model):
    otherdata = models.ForeignKey(OtherData)
    user = models.ForeignKey(settings.AUTH_USER_MODEL)
    image = models.FileField(blank=True, null=True, upload_to='images/')

我正在寻找在otherdata实例上保存图像，获得完整性错误NOT NULL constraint failed。我正在使用模型表单来保存数据。我尝试在 views.py 中使用格式有效的方法，但仍然是相同的错误。

    def form_valid(self, form):
    instance = form.save(commit=False)
    instance.user = self.request.user
    instance.otherdata_id = self.kwargs.get('pk')
    return super(ImageCreateView, self).form_valid(form)

期待寻求帮助，谢谢。

Answer 1

你可以尝试这个吗，你可以从pk

获得 OtherData实例

def form_valid(self, form):
     instance = form.save(commit=False)
     instance.user = self.request.user
     instance.otherdata = OtherData.objects.get(pk=self.kwargs.get('pk'))
     return super(ImageCreateView, self).form_valid(form)

以及model.py

中的小变化

class OtherData(models.Model):
     title = models.CharField(max_length=120)
     user = models.ForeignKey(settings.AUTH_USER_MODEL,related_name='other_data')

class ProductImage(models.Model):
     otherdata = models.ForeignKey(OtherData)
     user = models.ForeignKey(settings.AUTH_USER_MODEL,related_name='product_image')
     image = models.FileField(blank=True, null=True, upload_to='images/')

在关联外键以在django中保存表单时出错

1 个答案: