flectra/addons/website_sale_stock/models/res_config_settings.py

# -*- coding: utf-8 -*-
# Part of Odoo, Flectra. See LICENSE file for full copyright and licensing details.

from flectra import fields, models, api


class ResConfigSettings(models.TransientModel):
    _inherit = 'res.config.settings'

    inventory_availability = fields.Selection([
        ('never', 'Sell regardless of inventory'),
        ('always', 'Show inventory on website and prevent sales if not enough stock'),
        ('threshold', 'Show inventory below a threshold and prevent sales if not enough stock'),
        ('custom', 'Show product-specific notifications'),
    ], string='Inventory', default='never')
    available_threshold = fields.Float(string='Availability Threshold')

    @api.multi
    def set_values(self):
        super(ResConfigSettings, self).set_values()
        IrDefault = self.env['ir.default'].sudo()
        IrDefault.set('product.template', 'inventory_availability', self.inventory_availability)
        IrDefault.set('product.template', 'available_threshold', self.available_threshold if self.inventory_availability == 'threshold' else None)

    @api.model
    def get_values(self):
        res = super(ResConfigSettings, self).get_values()
        IrDefault = self.env['ir.default'].sudo()
        res.update(inventory_availability=IrDefault.get('product.template', 'inventory_availability') or 'never',
                   available_threshold=IrDefault.get('product.template', 'available_threshold') or 5.0)
        return res