Good day people,
So I have a case where, I have a customer called Thomas TT LTD and the child contact is Bobo, Lex, and Tommy, the customer field is valued with Thomas TT LTD. I need to show the child contact on the crm.lead and also be able to add more child through this model. So basically it's like adding a function like Contact & Address notebook on res.partner but it's Contact & Address on crm.lead haha. Is there a way to do that? Thank you for the help :D
All you need to do is to delare a related field in crm.lead model.
child_ids = fields.M2M(related='partner_id.child_ids', .... )
In crm.lead, if you add a child, it will automatically be added to partner childs too and vice versa.