Question

我的代码片段（观点和表单）

my views.py：

 def checkout(request):
    print "signup"
    if request.method == 'POST':
        print "post payment"
        form = PaymentForm(request.POST)
        try:
            if form.is_valid():
                print form.cleaned_data
                ui.balance = ui.balance - (form.cleaned_data['amount'] * form.cleaned_data['price'])
                u.first_name = form.cleaned_data['first_name']
                u.last_name = form.cleaned_data['last_name']
                u.save()
                print "after login in signup"
                return redirect("/student/control")


            else:
                print "error"
                print form.errors
        except:
            raise
            print "error here"
            print form.errors
            pass
            #return render(request, 'student/register.html', {'form': form})

    else:
        form = PaymentForm()

    return render(request, 'student/control.html', {'form': form})

和我的forms.py:

 class PaymentForm(forms.Form):
    first_name = forms.CharField(max_length = 25)
    last_name = forms.CharField( max_length = 25)
    amount = forms.IntegerField()
    price = forms.FloatField()
    def clean(self):
        cleaned_data = super(PaymentForm, self).clean()

        if User.objects.filter(first_name != cleaned_data['first_name']).count():
            raise forms.ValidationError({'first_name':['Name does not exist']})
        if User.objects.filter(last_name != cleaned_data['last_name']).count():
            raise forms.ValidationError({'last_name':['Name does not exist']})

        return cleaned_data

之前没有发生过这个问题我对注册页面使用了相同的格式，并且工作正常。有什么建议吗？

Answer 1

请记住，您需要导入一个类才能使用它。

在这种情况下，您需要在PaymentForm中使用forms.py中的views.py。所以你需要进行导入：

# views.py
from somewhere.forms import PaymentForm

现在，您可以在PaymentForm

中使用views.py

从表单更改现有数据库条目

1 个答案: