forms.py 文件源码

def clean(self):

        super(PrefixCSVForm, self).clean()

        site = self.cleaned_data.get('site')
        vlan_group = self.cleaned_data.get('vlan_group')
        vlan_vid = self.cleaned_data.get('vlan_vid')

        # Validate VLAN
        if vlan_group and vlan_vid:
            try:
                self.instance.vlan = VLAN.objects.get(site=site, group__name=vlan_group, vid=vlan_vid)
            except VLAN.DoesNotExist:
                if site:
                    raise forms.ValidationError("VLAN {} not found in site {} group {}".format(
                        vlan_vid, site, vlan_group
                    ))
                else:
                    raise forms.ValidationError("Global VLAN {} not found in group {}".format(vlan_vid, vlan_group))
            except MultipleObjectsReturned:
                raise forms.ValidationError(
                    "Multiple VLANs with VID {} found in group {}".format(vlan_vid, vlan_group)
                )
        elif vlan_vid:
            try:
                self.instance.vlan = VLAN.objects.get(site=site, group__isnull=True, vid=vlan_vid)
            except VLAN.DoesNotExist:
                if site:
                    raise forms.ValidationError("VLAN {} not found in site {}".format(vlan_vid, site))
                else:
                    raise forms.ValidationError("Global VLAN {} not found".format(vlan_vid))
            except MultipleObjectsReturned:
                raise forms.ValidationError("Multiple VLANs with VID {} found".format(vlan_vid))