126 

   127 class BeforeDeleteRelationSecurityHook(SecurityHook):

   128     __regid__ = 'securitybeforedelrelation'

   129     events = ('before_delete_relation',)

   130 

   131     def __call__(self):

   132         nocheck = self._cw.transaction_data.get('skip-security', ())

   133         if (self.eidfrom, self.rtype, self.eidto) in nocheck:

   134             return

   135         rschema = self._cw.repo.schema[self.rtype]

   136         rdef = rschema.rdef(self._cw.describe(self.eidfrom)[0],

   137                             self._cw.describe(self.eidto)[0])

   138         rdef.check_perm(self._cw, 'add', fromeid=self.eidfrom, toeid=self.eidto)

   139