[英]Django instance in model form
有一個問題,我想做一個Django用戶object創建表格,但是不行。 具有不同 model 的完全相同的視圖可以正常工作。 我認為問題在於我如何以形式傳輸數據和實例。
意見:
@login_required(login_url='login')
def CreateRoom(request, pk):
topic = Topic.objects.get(id=pk)
form = RoomForm(data=request.POST, instance=room)
if request.method == 'POST':
if form.is_valid():
room = form.save(commit=False)
room.host=request.user
room.topic=topic
room.save()
return redirect('home')
context = {'form': form, 'topic': topic}
return render(request, 'room_form.html', context)
forms:
class RoomForm(ModelForm):
def __init__(self, *args, **kwargs):
super(RoomForm, self).__init__(*args, **kwargs)
self.fields['themes'].queryset = self.instance.themes.all()
class Meta:
model = Room
fields = '__all__'
exclude = ['topic', 'host', 'participants']
您正在為表單分配一個不存在的實例( room
)。 您應該將視圖更改為:
topic = Topic.objects.get(id=pk)
room = Room.objects.create(topic=topic)
form = RoomForm(request.POST, instance=room)
if request.method == 'POST':
if form.is_valid():
room = form.save(commit=False)
room.host=request.user
room.save()
return redirect('home')
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