In orderline we can search the products based on name, internal reference and barcode.I am trying to add one extra field.

Firstly I created a portno field in product template for search

port_no_1 = fields.Char(string="Port No")

in my custom module I override the function

def name_search(self, name='', args=None, operator='ilike', limit=100):

        res = super(ProductProduct, self).name_search(name='', args=None, operator='ilike', limit=100)

        ids = self.search(args + [('port_no_1', '=', name)], limit=limit)

        return res

but it will not helps search based port no

How to add this feature in my custom module ?