Hi,

I think we can make use of odoo's related field here to get the desired result.Here's a sample of the code that might be applicable in your case:

class MyMainTable(models.Model):
    _name = "my.main.view"

    sale_id = fields.Many2one('sale.order')

    line_ids = fields.One2many(
        comodel_name='my.new.table',
        inverse_name='main_table_id',
        string='Related New Table Records',
    )


class NewTableModel(models.Model):
    _name = 'my.new.table'
    _description = 'Description of your new table'


    sale_id = fields.Many2one(related='main_table_id.sale_id', readonly=False)

    main_table_id = fields.Many2one('my.main.view', string='Main Table Reference')

In the above, the sale_id can be considered as the many2one field from model A and 'my.new.table' as the relation model for the one2many field . So we can use the inverse field in the model B and  define the sale_id as a related field.

Hope it helps

Hi Brain Station,

Thanks for your answer

I know how to pass context via action button

But the problem whith the button Add in a one2many, is that there is no action button or i don't know how to find it ?!!

You can achieve this goal by passing context through the method of the button action. 

Like, 

Context = { ‘default_type’ = self.type } 

Then return the view action and context. 

Or in the xml file : 

Context=”{‘default_type’:type}” 

Thanks & Regards, 

Brain Station 23 Ltd. 

Mobile: (+880) 1404055226 

Email: sales@brainstation-23.com 

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