Django:保存前更改TextField

Question

这是我的型号：

class Card(models.Model):
user = models.ForeignKey(User, on_delete=models.CASCADE)
imp_id = models.TextField(null = True)

这是我的观点：

def Add(request):
if request.method == 'POST':
form = Add_card(request.POST)
if form.is_valid():
save = form.save(commit = False)
save.user = request.user
save.imp_id = "asd" # I tried to change it here but I failed
save.save()
else:
form = Add_card()
cards = Card.objects.all()
return render(request, 'addcard.html', {'form': form, 'cards' : cards})

保存前如何更改该文本字段？

Answer 1

你可以这样做

def Add(request):
if request.method == 'POST':
request.POST.imp_id="asd"
form = Add_card(request.POST)
if form.is_valid():
save = form.save(commit = False)
save.user = request.user
save.save()
else:
form = Add_card()
cards = Card.objects.all()
return render(request, 'addcard.html', {'form': form, 'cards' : cards})

Answer 2

这个问题可以通过使用default='asd'来解决。