408     if hasattr(cls, 'etype'):

   408     if hasattr(cls, 'etype'):

   409         eschema = schema.eschema(cls.etype)

   409         eschema = schema.eschema(cls.etype)

   410         if not (eschema.has_perm(req, perm) or eschema.has_local_role(perm)):

   410         if not (eschema.has_perm(req, perm) or eschema.has_local_role(perm)):

   411             return 0

   411             return 0

   412     if hasattr(cls, 'rtype'):

   412     if hasattr(cls, 'rtype'):

   414             return 0

   415             return 0

   415     return 1

   416     return 1

   416 

   417 

   417 @lltrace

   418 @lltrace

   418 def has_relation(cls, req, rset, row=None, col=None, **kwargs):

   419 def has_relation(cls, req, rset, row=None, col=None, **kwargs):

   419     """check if the user has read access on the relations's type refered by the

   420     """check if the user has read access on the relations's type refered by the

   420     .rtype attribute of the class, and if all entities types in the

   421     .rtype attribute of the class, and if all entities types in the

   421     result set has this relation.

   422     result set has this relation.

   422     """

   423     """

   423     if hasattr(cls, 'rtype'):

   424     if hasattr(cls, 'rtype'):

   424         perm = getattr(cls, 'require_permission', 'read')

   426         perm = getattr(cls, 'require_permission', 'read')

   426             return 0

   428             return 0

   427         if row is None:

   429         if row is None:

   428             for etype in rset.column_types(col or 0):

   430             for etype in rset.column_types(col or 0):

   429                 if not cls.relation_possible(etype):

   431                 if not cls.relation_possible(etype):

   430                     return 0

   432                     return 0

   437 def one_has_relation(cls, req, rset, row=None, col=None, **kwargs):

   439 def one_has_relation(cls, req, rset, row=None, col=None, **kwargs):

   438     """check if the user has read access on the relations's type refered by the

   440     """check if the user has read access on the relations's type refered by the

   439     .rtype attribute of the class, and if at least one entity type in the

   441     .rtype attribute of the class, and if at least one entity type in the

   440     result set has this relation.

   442     result set has this relation.

   441     """

   443     """

   442     perm = getattr(cls, 'require_permission', 'read')

   445     perm = getattr(cls, 'require_permission', 'read')

   444         return 0

   447         return 0

   445     if row is None:

   448     if row is None:

   446         for etype in rset.column_types(col or 0):

   449         for etype in rset.column_types(col or 0):

   447             if cls.relation_possible(etype):

   450             if cls.relation_possible(etype):

   448                 return 1

   451                 return 1