eiru_payment_term_generator/model/account_payment_term.py

# -*- coding: utf-8 -*-

from openerp import api, fields, models
from openerp.exceptions import except_orm

class AccountPaymentTerm(models.Model):
	_inherit = 'account.payment.term'

	invoice_amount = fields.Float(string="Invoice Amount") 
	amount = fields.Float(string="Amount")
	frequency = fields.Selection([('week','Semana(s)'), ('month','Mes(es)'), ('half_month','Quincena')], string="Frequency")

	@api.model
	def join_payment_term_lines(self, values):
		self.env['account.payment.term.line'].search([('payment_id','=',self.id)]).unlink()
		new_line = self.env['account.payment.term.line']
		for x in values:
			payment_term_line = ( {
			    'payment_id': x['payment_id'],
			    'value': x['value'],
			    'value_amount' : x['value_amount'],
			    'days' : x['days'],
			    'days2' : x['days2'],
			    'weeks' : x['weeks'],
			    'months' : x['months'],
			})
			new_line.create(payment_term_line)

	@api.one
	def clean_lines(self):
		self.env['account.payment.term.line'].search([('payment_id','=',self.id)]).unlink()