我是Django的新手所以请原谅我代码中的任何愚蠢错误。我使用FBV发了一张有多张图片的帖子。它工作得很好，并且可以将多个图像添加到帖子中。现在我正在编辑Post但是我在编辑帖子时遇到问题我得到了以下错误。
AttributeError at /gangsters/edit/Scarface-the-story-of-Al-Capone/
'tuple' object has no attribute '_committed'
Request Method: POST
Request URL: http://127.0.0.1:8000/gangsters/edit/Scarface-the-story-of-Al-Capone
Django Version: 1.11
Exception Type: AttributeError
Exception Value:
'tuple' object has no attribute '_committed'
我的模型的简要说明让我说我正在尝试制作这个网络应用程序，允许用户从世界各地和不同的时间段撰写关于黑帮（更像是帖子模型）的文章。有2个型号。歹徒和帮派成员。 GangMember有一个关于Gangster的foreign_key
我的模型如下
class Gangster(models.Model):
user = models.ForeignKey(User, related_name='posts')
gangster_name = models.CharField(max_length=250, unique=True)
slug = models.SlugField(allow_unicode=True, unique=True)
history = models.TextField()
gangster_image = models.ImageField()
# there are more attributes like "Post-like but ignoring them as they are not relevant here"
def save(self, *args, **kwargs):
self.slug = slugify(self.title) #for SEO on google searches
super().save(*args, **kwargs)
class Gangmember(models.Model):
gangster = models.ForeignKey(Gangster, on_delete=models.CASCADE, related_name="ganglord")
gangmember_image= models.ImageField(upload_to='images/', blank=True, null=True, default='')
gangmember_name = models.CharField(max_length=100, default='')
brief_description = models.CharField(max_length=1000, default='')
下面是我的 gangster_edit views.py
@login_required
def gangster_edit(request, slug):
gangster = get_object_or_404(Gangster, slug=slug)
ImageFormSet = modelformset_factory(Gangmember, fields=('gangmember_image', 'gangmember_name', 'gangmember_description'), extra=7, max_num=7)
if gangster.user != request.user:
raise Http404()
if request.method == "POST":
form = GangsterEditForm(request.POST or None, request.FILES or None, instance=gangster)
formset = ImageFormSet(request.POST or None, request.FILES or None)
if form.is_valid() and formset.is_valid():
form.save()
print(formset.cleaned_data)
data = GangMember.objects.filter(gangster=gangster)
for index, f in enumerate(formset):
if f.cleaned_data:
if f.cleaned_data['id'] is None:
photo = GangMember(gangster=gangster, image=f.cleaned_data.get('image'), image_title=f.cleaned_data.get('image_title'),
image_description=f.cleaned_data.get('image_description'))
photo.save()
elif (f.cleaned_data['image'], f.cleaned_data['image_title'], f.cleaned_data['image_description']) is False:
photo = Gangmember.objects.get(id=request.POST.get('form-' + str(index) + '-id'))
photo.delete()
else:
photo = Gangmember(gangster=gangster, image=f.cleaned_data.get('gangmember_image'), image_title=f.cleaned_data.get('gangmember_name'),
image_description=f.cleaned_data.get('gangmember_description'))
d = GangMember.objects.get(id=data[index].id)
d.gangmember_image=photo.gangmember_image,
d.gangmember_name=photo.gangmember_name,
d.gangmember_description=photo.gangmember_description
d.save()
return HttpResponseRedirect(gangster.get_absolute_url())
else:
form = GangsterEditForm(instance=gangster)
formset = ImageFormSet(queryset=Gangmember.objects.filter(gangster=gangster))
context = {'form': form, 'gangster': gangster, 'formset': formset}
return render(request, 'gangsters/gangster_edit.html', context)
如果问题太长，我很抱歉。我的 gangster_edit 视图再次无效并发出AttributeError错误。错误详细信息粘贴在上面。如果你已经阅读过这里，非常感谢你帮我解决这个问题
TraceBack错误
System check identified no issues (0 silenced).
May 02, 2018 - 22:22:03
Django version 1.11, using settings 'Khal.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.
[02/May/2018 22:22:46] "GET /gangsters/samir/al-capone-from-chicago/ HTTP/1.1" 200 31213
[02/May/2018 22:22:49] "GET /gangsters/edit/al-capone-from-chicago/ HTTP/1.1" 200 18773
[{'gangmember_image': <ImageFieldFile: images/3.jpg>, 'gangmember_name': 'A', 'brief_description': 'This is A You will love A', 'id': <Gangmember: Al Capone from Chicago Image>}, {'gangmember_image': <InMemoryUploadedFile: B.jpg (image/jpeg)>, 'gangmember_name': 'B', 'brief_description': 'This is B
You will love B', 'id': None}, {'gangmember_image': <InMemoryUploadedFile: C.jpg (image/jpeg)>, 'gangmember_name': 'C', 'brief_description': 'Thi
s is C You will love C', 'id': None}, {'gangmember_image': <InMemoryUploadedFile: D.jpg (image/jpeg)>, 'gangmember_name': 'D', 'image_description
': 'This is D You will love D', 'id': None}, {'gangmember_image': <InMemoryUploadedFile: E.jpg (image/jpeg)>, 'gangmember_name': 'E.', 'brief_description': 'This is E You will love E', 'id': None}, {}, {}]
Internal Server Error: /gangsters/edit/al-capone-from-chicago/
Traceback (most recent call last):
File "C:\Users\Samir\Miniconda3\envs\MyDjangoEnv\lib\site-packages\django\core\handlers\exception.py", line 41, in inner
response = get_response(request)
File "C:\Users\Samir\Miniconda3\envs\MyDjangoEnv\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Users\Samir\Miniconda3\envs\MyDjangoEnv\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\Samir\Documents\gangsters\views.py", line 144, in gangster_edit
d.save()
File "C:\Users\Samir\Miniconda3\envs\MyDjangoEnv\lib\site-packages\django\db\models\base.py", line 806, in save
force_update=force_update, update_fields=update_fields)
File "C:\Users\Samir\Miniconda3\envs\MyDjangoEnv\lib\site-packages\django\db\models\base.py", line 836, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "C:\Users\Samir\Miniconda3\envs\MyDjangoEnv\lib\site-packages\django\db\models\base.py", line 900, in _save_table
for f in non_pks]
File "C:\Users\Samir\Miniconda3\envs\MyDjangoEnv\lib\site-packages\django\db\models\base.py", line 900, in <listcomp>
for f in non_pks]
File "C:\Users\Samir\Miniconda3\envs\MyDjangoEnv\lib\site-packages\django\db\models\fields\files.py", line 295, in pre_save
if file and not file._committed:
AttributeError: 'tuple' object has no attribute '_committed'
[02/May/2018 22:23:28] "POST /gangsters/edit/Scarface-the-story-of-Al-Capone
/ HTTP / 1.1＆＃34; 500 112934