id,summary,reporter,owner,description,type,status,component,version,severity,resolution,keywords,cc,stage,has_patch,needs_docs,needs_tests,needs_better_patch,easy,ui_ux 9558,datetime blank=True,wim@…,nobody,"In a model, having a DateTimeField with blank = True, I get an error when leaving the value blank on saving. My model is, simplified: {{{ class Place(models.Model): name = models.CharField(max_length=100) class Event(models.Model): user = models.ForeignKey(User) place = models.ForeignKey(Place, blank=True) starttime = models.DateTimeField(blank=True) class EventForm(forms.ModelForm): class Meta: model = Event exclude = ['owner'] def edit_event(request, event_id=False): userid = request.session['loggedinas'] if request.POST: event = EventForm(request.POST) if event.is_valid(): cleaned_data = event.cleaned_data event = Event( user_id = userid ) fields = ['name', 'description', 'starttime', 'endtime', 'photo', 'file'] for fieldname in fields: setattr( event, fieldname, cleaned_data[fieldname]) return HttpResponseRedirect('/success') ... }}}",,closed,Uncategorized,1.0,,invalid,,,Unreviewed,0,0,0,0,0,0