eiru_inmobiliaria/models/account_analytic_account.py

# -*- coding: utf-8 -*-
from openerp import models, fields, api, _
from openerp.exceptions import Warning

class AnalyticAccount(models.Model):
    _inherit = 'account.analytic.account'

    # cuotas
    cuota_total = fields.Integer(string="Total de cuotas")
    nro_cuotas = fields.Integer(string="Cuota actual")

    @api.multi
    def recurring_create_invoice(self):
        self.nro_cuotas = self.nro_cuotas + 1
        if self.nro_cuotas <= self.cuota_total:
            value = super(AnalyticAccount, self).recurring_create_invoice()
            cuota_string = "Cuota "+ str(self.nro_cuotas)+"/"+str(self.cuota_total)
            cuota_tot=self.cuota_total
            for each in value:
                invoice = self.env['account.invoice'].search([('id','=',each)])
                invoice.write({'cuotas': cuota_string})
                invoice.write({'cuota_total': cuota_tot})
            return value
        else:
            raise Warning(_("Ya no puede generar cuotas para este contrato."))

    @api.model
    def recurring_create_invoice_inmobiliaria(self):
        value = super(AnalyticAccount, self)._cron_recurring_create_invoice()
        for each in value:
            invoice = self.env['account.invoice'].search([('id','=',each)])
            contract = self.env['account.analytic.account'].search([('code','=',invoice.origin)])
            contract.nro_cuotas = contract.nro_cuotas + 1
            self.env.cr.execute('update account_analytic_account set nro_cuotas = %s where id = %s', (contract.nro_cuotas, contract.id))
            cuota_string = "Cuota "+ str(contract.nro_cuotas)+"/"+str(contract.cuota_total)
            self.env.cr.execute('update account_invoice set cuotas = %s where  id = %s', (cuota_string, invoice.id))
            self.env.cr.execute('update account_invoice set cuota_total = %s where  id = %s', (cuota_tot, invoice.id))
        return value