Add module product_usability

product_usability/product.py

@@ -0,0 +1,108 @@
+# -*- coding: utf-8 -*-
+##############################################################################
+#
+#    Product Usability module for Odoo
+#    Copyright (C) 2015-2016 Akretion (http://www.akretion.com)
+#    Copyright (C) 2004-2016 Odoo SA (http://www.odoo.com)
+#    @author Alexis de Lattre <alexis.delattre@akretion.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+
+from openerp.osv import orm, fields
+from openerp import SUPERUSER_ID
+import openerp.addons.decimal_precision as dp
+
+
+class ProductTemplate(orm.Model):
+    _inherit = 'product.template'
+
+    _columns = {
+        'price_history_ids': fields.one2many(
+            'product.price.history', 'product_template_id',
+            string='Product Price History')
+        }
+
+    # All the code below is copyright Odoo SA
+    def _set_standard_price(
+            self, cr, uid, product_tmpl_id, value, context=None):
+        ''' Store the standard price change in order to be able to
+        retrieve the cost of a product template for a given date'''
+        if context is None:
+            context = {}
+        price_history_obj = self.pool['product.price.history']
+        user_company = self.pool['res.users'].browse(
+            cr, uid, uid, context=context).company_id.id
+        company_id = context.get('force_company', user_company)
+        price_history_obj.create(cr, SUPERUSER_ID, {
+            'product_template_id': product_tmpl_id,
+            'cost': value,
+            'company_id': company_id,
+            'origin': context.get('product_price_history_origin', False),
+            }, context=context)
+
+    def create(self, cr, uid, vals, context=None):
+        product_template_id = super(ProductTemplate, self).create(
+            cr, uid, vals, context=context)
+        self._set_standard_price(
+            cr, uid, product_template_id,
+            vals.get('standard_price', 0.0), context=context)
+        return product_template_id
+
+    def write(self, cr, uid, ids, vals, context=None):
+        if isinstance(ids, (int, long)):
+            ids = [ids]
+        if 'standard_price' in vals:
+            for prod_template_id in ids:
+                self._set_standard_price(
+                    cr, uid, prod_template_id,
+                    vals['standard_price'], context=context)
+        res = super(ProductTemplate, self).write(
+            cr, uid, ids, vals, context=context)
+        return res
+
+
+class ProductPriceHistory(orm.Model):
+    # This is a backport of the datamodel of v8
+    # The code below is (C) Odoo SA
+    _name = 'product.price.history'
+    _rec_name = 'datetime'
+    _order = 'datetime desc'
+
+    _columns = {
+        'company_id': fields.many2one('res.company', required=True),
+        'product_template_id': fields.many2one(
+            'product.template', 'Product Template',
+            required=True, ondelete='cascade'),
+        'datetime': fields.datetime('Historization Time'),
+        'cost': fields.float(
+            'Historized Cost',
+            digits_compute=dp.get_precision('Product Price')),
+        # the 'origin' field is not in v8, it's an idea of mine !
+        'origin': fields.char('Origin'),
+    }
+
+    def _get_default_company(self, cr, uid, context=None):
+        if 'force_company' in context:
+            return context['force_company']
+        else:
+            company = self.pool['res.users'].browse(
+                cr, uid, uid, context=context).company_id
+            return company.id if company else False
+
+    _defaults = {
+        'datetime': fields.datetime.now,
+        'company_id': _get_default_company,
+    }