models.py 文件源码

def clean(self):
        """Extended validation for GCE Subnets."""
        if not re.match('^(?:[a-z](?:[-a-z0-9]{0,61}[a-z0-9])?)$', self.name):
            raise me.ValidationError('A **lowercase** name must be specified')
        super(GoogleSubnet, self).clean()