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所以我有一个模型,我使用modelformset工厂。在Django模型Formset中添加字段导致另一个字段上的IntegrityError
如果我离开窗体类这样的,我没有收到错误:
class CheckinForm(ModelForm):
class Meta:
model = Checkout
fields = ('return_date',)
def __init__(self, *args, **kwargs):
super(CheckinForm, self).__init__(*args, **kwargs)
self.fields['return_date'].widget = CheckboxInput()
如果我添加一个字段,extension
到fields
,我得到(1048, "Column 'book_id' cannot be null")
,但是,这些更改保存到数据库中。
这里是我的模型:
class Checkout(models.Model):
book = models.ForeignKey(Book)
user = models.ForeignKey(User)
checkout_date = models.DateField(auto_now_add = True)
return_date = models.DateField(null = True, blank=True)
extension = models.IntegerField("Extension in days", blank = True, default = 0)
,这里是处理表单视图:
def checkin(request):
c = RequestContext(request, dictionary)
CheckinFormSet = modelformset_factory(Checkout, CheckinForm)
if request.method == "POST":
data = request.POST.copy()
for i in range(0, int(data['form-TOTAL_FORMS'])):
if 'form-' + str(i) + '-return_date' in data:
data['form-' + str(i) + '-return_date'] = datetime.date.today().isoformat()
else:
data['form-' + str(i) + '-return_date'] = ''
formset = CheckinFormSet(data = data)
user_form = AutoUserForm(data = data)
if formset.is_valid():
c['cool'] = 'cool'
formset.save()
else:
c['err'] = formset.errors
c['data'] = data
else:
CheckinFormSet = modelformset_factory(Checkout, CheckinForm)
user_form = AutoUserForm()
c['user_form'] = user_form
c['form'] = CheckinFormSet
c['context'] = 'checkin'
return render_to_response('lib_admin/checkin.html', {}, c)
我必须去通过表单数据,因为对于return_date
场我只是有一个复选框,用户将打勾,并会插入当前日期。
这对我来说似乎很奇怪,尤其是因为数据已保存,即使我收到IntegrityError。
问题解决了。尽管如此,IntegrityError被抛在另一个领域仍然非常奇怪。非常感谢。 – Cronco 2012-01-12 11:43:40