eiru_purchases/controllers/helpers/product_pricelist.py

# -*- coding: utf-8 -*-
from openerp.http import request as r


def get_pricelist_id(currency_id):
    if not currency_id:
        return None

    domain = [
        ('active', '=', True),
        ('type', '=', 'sale')
    ]

    pricelist = r.env['product.pricelist'].search(domain)

    if not True in pricelist.mapped(lambda p: p.currency_id.id == currency_id):
        pricelist = pricelist[0].copy()

        pricelist.write({
            'currency_id': currency_id
        })
    else:
        pricelist = pricelist.filtered(lambda p: p.currency_id.id == currency_id)
    
    return pricelist.id