forms.py 文件源码

def clean(self):
        cleaned_data = super(L2TraceForm, self).clean()

        host_from = cleaned_data.get('host_from')
        host_to = cleaned_data.get('host_to')
        self.l2tracer = L2TraceQuery(host_from, host_to)
        try:
            self.l2tracer.trace()
        except MultipleObjectsReturned:
            msg = u"Input was ambiguous, matching multiple hosts"
            raise forms.ValidationError(msg)

        return cleaned_data