Hi Vincent,

You can do it using onchange method. You need to add an onchange method in the object of One2many field.

Ex:

class MyO2mClass(models.Model):
_name = 'my.one2many.obj'

@api.onchange('my_first_field')
def my_first_field_onchange(self):
    self.my_second_field = self.my_first_field

Reference: Odoo Onchange

Hi Sudhir,

Thank you for your answer but this is not my request.

I don't want to report the value of column 1 in column 2.

I want to condition the filling of my column 2 according to the choice made in column 1, which, I remind you, are many2one both.

I give you an example :

First line : Column 1, i choose Brand, in column 2, i can choose Apple, Samsung, Xiaomi,...

Second line : Column 2, i choose Type, in column 2, i can choose Phone, Laptop, headphones,...

I don't want to have a column 2 with all those values (Apple, Samsung,Xiaomi,Phone, Laptop, headphones,...) but fill the column 2 with values according the choice made in column 1

Hope it is clear enough, if not don't hesitate