I try to figure how I can show a restricted list of orders, purchases or invoice based on a field I added in the product model, stock_owner_id. He should see only records related to his allowed_stock_owner_ids.

Am I forced to copy stock_owner_id from product.template to sale.order.line to sale.order to apply my domain filter? Is there another way around?

Here are my models:

class User(models.Model): 
    _inherit = 'res.users'
    
    current_stock_owner_id = fields.Many2one('res.partner', string='Current Stock Owner')
    allowed_stock_owner_ids = fields.Many2many('res.partner', 'res_partner_users_rel', 
                                       string='Stock Owners',
                                       domain="[('stock_owner','=',True)]")

class ProductTemplate(models.Model):
    _inherit = 'product.template' 
    stock_owner_id = fields.Many2one('res.partner', string='Stock Owner',
                                     domain="[('stock_owner','=',True)]")