KeyError：'image‘

Question

当我尝试保存详细信息时，出现以下错误: KeyError：'image‘。我不明白，为什么？views.py中的错误。我想一次上传多张照片

views.py：

@user_passes_test(lambda u: u.is_superuser)
def new_detail(request):
ImageFormSet = modelformset_factory(DetailImage,
                                    form=ImageForm, extra=10)
if request.method == 'POST':
    form = DetailForm(request.POST)
    formset = ImageFormSet(request.POST, request.FILES,
                           queryset=DetailImage.objects.none())

    if form.is_valid() and formset.is_valid():
        detail_form = form.save()
        detail_form.save()
        for form in formset.cleaned_data:
            images = form['image'] # HERE IS THE PROBLEM
            photo = DetailImage(detail=detail_form, image=images)
            photo.save()
        return redirect('/new_detail/')
else:
    form = DetailForm(request.POST)
    formset = ImageFormSet(queryset=DetailImage.objects.none())
return render(request, 'shop/new_detail.html',
{'form': form,'formset': formset})

forms.py

...
class ImageForm(forms.ModelForm):
image = forms.ImageField()
class Meta:
    model = DetailImage
    fields = ('image',)

models.py

...
class DetailImage(models.Model):
detail = models.ForeignKey(Detail, related_name='images',
on_delete=models.CASCADE)
image = models.ImageField(upload_to='details', null = True, blank = True)

Answer 1

KeyError:在您的例子中，'image‘意味着在您的表单集中清理的数据中的一个表单中没有'image’键。您应该执行检查。如下所示：

    for form in formset.cleaned_data:
        if 'image' in form:
            image = form['image']
            photo = DetailImage(detail=detail_form, image=image)
            photo.save()