Django 带外键的IntegrityError
我有这些模型，州和城市Django 带外键的IntegrityError,django,Django,我有这些模型，州和城市 class State(models.Model): name = models.CharField(max_length=255) shortname = models.CharField(max_length=100) def __unicode__(self): return self.name class City(models.Model): name = models.CharField(max_lengt
class State(models.Model):
name = models.CharField(max_length=255)
shortname = models.CharField(max_length=100)
def __unicode__(self):
return self.name
class City(models.Model):
name = models.CharField(max_length=255)
state = models.ForeignKey(State)
def __unicode__(self):
return self.name
def form_valid(self, form):
city = form.cleaned_data['city_name']
state = form.cleaned_data['state_name']
m = State.objects.get_or_create(name=state)
state_id = m[0].id
City.objects.get_or_create(name=state, id=state_id)
form.save()
class StoreForm(ModelForm):
class Meta:
model = Store
fields = '__all__'
class StoreGoogleMapForm(StoreForm):
city_name = forms.CharField(
widget=forms.TextInput(
attrs={'readonly': 'readonly'}
)
)
state_name = forms.CharField(
widget=forms.TextInput(
attrs={'readonly': 'readonly'}
)
)
class Meta(StoreForm.Meta):
exclude = (
'state', 'city'
)
widgets = {
'retailer': forms.HiddenInput(),
'lon': forms.HiddenInput(),
'lat': forms.HiddenInput(),
}
def clean(self):
cleaned_data = super(StoreGoogleMapForm, self).clean()
city_name = cleaned_data.get("city_name")
state_name = cleaned_data.get("state_name")
return cleaned_data
class NewStore(LoginRequiredMixin, CreateView):
model = Store
template_name = "new_store.html"
form_class = StoreGoogleMapForm
def get_context_data(self, **kwargs):
ctx = super(NewStore, self).get_context_data(**kwargs)
ctx['cobrand'] = self.retailer
return ctx
def get(self, request, *args, **kwargs):
self.retailer = get_object_or_404(Cobrand, pk=kwargs['pk'])
self.object = Store(retailer=self.retailer)
form_class = self.get_form_class()
form = self.get_form(form_class)
return self.render_to_response(self.get_context_data(form=form))
def form_valid(self, form):
city = form.cleaned_data['city_name']
state = form.cleaned_data['state_name']
m = State.objects.get_or_create(name=state)
City.objects.get_or_create(name=city, state=m[0])
form.save()
messages.add_message(
self.request,
messages.SUCCESS,
'The store was successfuly created!',
extra_tags='success'
)
return HttpResponseRedirect(self.get_success_url())
def get_success_url(self):
return reverse_lazy('store_list', kwargs={'pk': self.kwargs['pk']})
def post(self, request, *args, **kwargs):
self.retailer = get_object_or_404(Cobrand, pk=kwargs['pk'])
self.object = Store(retailer=self.retailer)
form_class = self.get_form_class()
form = self.get_form(form_class)
if form.is_valid():
return self.form_valid(form)
else:
return self.form_invalid(form)
City.objects.get_or_create(name=city, state=m[0])
form.save（）无论如何，这段代码有点奇怪，你的表单呢？get\u或\u create返回两个参数，然后你可以直接将对象传递到下一个语句中
state, created = State.objects.get_or_create(name=state)
City.objects.get_or_create(name=state, state=state)
怀疑您不应该以有效的形式执行此操作，但如果没有代码的其余部分，则无法确定 @sax抱歉没有注意到更改为City.objects.get\u或\u create（name=City，state=m[0]）好的，这里有点奇怪。由于
State.shortnamenull=TrueState.objects.get\u或\u create（name=State）Store