OpenERP: How to display fields of two objects within the same view?

[Narayan]

How can I display fields of two record in the same tree view, Knowing that these tables are linked with OneToMany relashionship ?here is my field:\[code\] 'class_id': fields.many2one('mod.class', 'Entree', required=True),\[/code\]In my tree view :\[code\] <field colspan="4" name="class_id" nolabel="1" widget="one2many_list"/>\[/code\]But this can just display foreign key but i need other fieldsI'll appreciate any help .Thank you