Hi,

To change the value of the field type_customer according to the total_invoice amount.Updated the code like this:

class ResPartner(models.Model): 
 _inherit = 'res.partner'
type_customer = fields.Selection([('normal', 'Normal'), ('gold', 'Gold')], string='Type customer', compute='_compute_type_customer')
    def _compute_type_customer(self):
        for rec in self:
            total_invoiced = sum(rec.env['account.move'].browse(rec.id).mapped('amount_total_signed'))
            if total_invoiced > 1000:
                rec.type_customer = 'Gold'
            else:
                rec.type_customer = 'Normal'

Regards

Hi,

To get the total invoiced amount of the customer, you can read it from account.move.line using the search orm with proper domain in search function.

domain = []

self.env['account.move.line'].search(domain)

Thanks