Add module pos_config_single_user

Several usability enhancements in sale, purchase, product and account

pos_config_single_user/pos.py

@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+# © 2014-2016 Akretion (Alexis de Lattre <alexis.delattre@akretion.com>)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import models, fields, api, _
+from openerp.exceptions import UserError
+
+
+class PosConfig(models.Model):
+    _inherit = 'pos.config'
+
+    allowed_user_id = fields.Many2one(
+        'res.users', string="Allowed User",
+        help="If you select a user, only this user will be allowed to start "
+        "sessions for this POS", ondelete='restrict')
+
+    @api.multi
+    def open_session_cb(self):
+        self.ensure_one()
+        if (
+                self.allowed_user_id and
+                self.allowed_user_id != self.env.user):
+            raise UserError(_(
+                "The POS '%s' can be used only by user '%s'.") % (
+                    self.name,
+                    self.allowed_user_id.name))
+        return super(PosConfig, self).open_session_cb()