Question

我正在使用django创建图像上传功能。但是，它没有上传。我不知道代码错误，所以我想告诉你。我尝试了各种方法，但是如果我为imagefiled指定默认值，默认值将被应用。

#form
class RecordCreateForm(BaseModelForm):

    class Meta:
        model = URC
        fields = ('image','UPRC','URN',)

    def __init__(self, *args, **kwargs):
        user = kwargs.pop('user')
        super(RecordCreateForm,self).__init__(*args, **kwargs)
        self.fields['URN'].queryset =  UPRM.objects.filter(user=user)

#view
class RecordCreate(CreateView):
    model = URC
    form_class = RecordCreateForm
    template_name = 'records/urcform.html'
    success_url = reverse_lazy('person:home')

    def get_form_kwargs(self):
      kwargs = super(RecordCreate, self).get_form_kwargs()
      # get users, note: you can access request using: self.request
      kwargs['user'] = self.request.user
      return kwargs

    def form_valid(self, form):
        user = self.request.user
        form.instance.user = user
        form.instance.group = belong.objects.get(user=user).group
        return super().form_valid(form)

#model
def get_upload_path(instance, filename):
  n = datetime.now()
  prefix = "records/"
  ymd='/'.join([n.strftime('%Y'), n.strftime('%m'), n.strftime('%d'), ""]) + "/"
  directory=str(instance.user.id) + "/"
  name=str(uuid.uuid4()).replace("-", "")
  extension=os.path.splitext(filename)[-1]
  return ''.join([prefix, directory, ymd, name, extension])

class URC(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    group = models.ForeignKey(group, on_delete=models.CASCADE, null=True)
    URN = models.ForeignKey(UPRM, on_delete=models.CASCADE)
    UPRC = models.CharField(max_length=300)
    image = models.ImageField(upload_to=get_upload_path)

    def __str__(self):
        return self.UPRC

#urls
if settings.DEBUG:
    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

我将发布任何其他必要的代码。对不起，英语不好。

后记

页面被重定向，没有任何错误显示。但是管理员屏幕可以上传。

class BaseModelForm(forms.ModelForm):
  def __init__(self, *args, **kwargs):
    kwargs.setdefault('label_suffix', '')
    super(BaseModelForm, self).__init__(*args, **kwargs)

#template
<form method="post" action="">
    {% csrf_token %}
    {{form.image.label_tag}}
    {{form.image}}
    {{form.UPRC.label_tag}}
    {{form.UPRC}}
    {{form.URN.label_tag}}
    {{form.URN}}
    <input class="btn btn-primary" type="submit" value="submit">
</form>

Answer 1

您的<form>标记缺少enctype，如here所述：

<form method="post" enctype="multipart/form-data">

Answer 2

您可以看一下此示例。 https://www.pythonsetup.com/simple-file-uploads-django-generic-createview/

def form_valid(self, form):
        self.object = Author(photo=self.get_form_kwargs().get('files')['photo'])
        self.object = form.save()
        return HttpResponseRedirect(self.get_success_url())

我无法使用Django上传图片

2 个答案: