1

我收到此错误“NOT NULL constraint failed: myfiles_document.user_id”我试图做的是将文件附加到用户 ForeignKey 所以用户只能看到他们使用这个应用程序django-file-form上传的内容这里是项目的代码

模型.py

class Example2(models.Model):
    title = models.CharField(max_length=255)

class ExampleFile(models.Model):
    fs = FileSystemStorage(location=settings.MEDIA_ROOT)
    input_file = models.FileField(max_length=255, upload_to='uploads/%Y.%m.%d' , storage=fs)
    user = models.ForeignKey('auth.User')


    def get_upload_path(self,filename):
        return "static/uploads/"+str(self.user.id)+"/"+filename

表格.py

class BaseForm(FileFormMixin, django_bootstrap3_form.BootstrapForm):
    title = django_bootstrap3_form.CharField()


class MultipleFileExampleForm(BaseForm):
    input_file = MultipleUploadedFileField()

def save(self):
    example = Example2.objects.create(
        title=self.cleaned_data['title']
    )

    for f in self.cleaned_data['input_file']:
        ExampleFile.objects.create(
            input_file=f
        )

    self.delete_temporary_files()

视图.py

 class BaseFormView(generic.FormView):
    template_name = 'example_form.html'

 def get_success_url(self):
    return reverse('example_success')

 def form_valid(self, form):
    form.save()
    return super(BaseFormView, self).form_valid(form)    

class ExampleSuccessView(generic.TemplateView):
    template_name = 'success.html'

class MultipleExampleView(LoginRequiredMixin, BaseFormView):
    form_class = forms.MultipleFileExampleForm
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1 回答 1

1

除非您手动执行，否则您的外键不会自动设置为当前用户。这就是为什么您收到非空约束错误的原因。尝试form_valid像这样修改您的方法：

def form_valid(self, form):
    form.instance.user = self.request.user
    ...

阅读Django 关于模型和 request.user 的文档以了解详细信息。

于 2015-03-15T17:05:46.237 回答