models.py 文件源码

def clean(self):
        """Custom validation for GCE Networks.

        GCE enforces:

            - Regex constrains on network names.
            - CIDR assignment only if `legacy` mode has been selected.

        """
        if self.mode == 'legacy':
            super(GoogleNetwork, self).clean()
        elif self.cidr is not None:
            raise me.ValidationError('CIDR cannot be set for modes other than '
                                     '"legacy" - Current mode: %s' % self.mode)

        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')