eiru_invoice_lines_statement/models/account_invoice.py

# -*- coding: utf-8 -*-
from openerp import models, fields, api

class AccountInvoice(models.Model):
    _inherit = 'account.invoice'

    description_completo = fields.Char(string='Descripción Completa', compute='_compute_description_completo_invoice', store=True)

    @api.depends('invoice_line')
    def _compute_description_completo_invoice(self):
        for invoice in self:
            descriptions = [line.name for line in invoice.invoice_line]
            invoice.description_completo = ', '.join(descriptions)

    @api.multi
    def action_invoice_paid(self):
        res = super(AccountInvoice, self).action_invoice_paid()

        # Copiar el valor de description_completo de account.invoice a account.bank.statement.line
        for invoice in self:
            if invoice.state in ('open', 'paid'):
                for statement in invoice.statement_ids:
                    for line in statement.line_ids:
                        line.write({'description_completo': invoice.description_completo})  # Usar el campo 'description_completo'

        return res

class AccountBankStatementLine(models.Model):
    _inherit = 'account.bank.statement.line'

    description_completo = fields.Char(string='Descripción Completa', compute='_compute_description_completo_statement', store=True)

    @api.depends('name')
    def _compute_description_completo_statement(self):
        for line in self:
            # Buscar la factura relacionada por el número (number)
            invoice = self.env['account.invoice'].search([('number', '=', line.name)], limit=1)
            line.description_completo = invoice.description_completo if invoice else ''