initial commit 2

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diff --git a/addons/purchase/models/product.py b/addons/purchase/models/product.py
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+++ b/addons/purchase/models/product.py
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+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import api, fields, models, _
+from odoo.addons.base.models.res_partner import WARNING_MESSAGE, WARNING_HELP
+from odoo.tools.float_utils import float_round
+from dateutil.relativedelta import relativedelta
+
+
+class ProductTemplate(models.Model):
+    _name = 'product.template'
+    _inherit = 'product.template'
+
+    property_account_creditor_price_difference = fields.Many2one(
+        'account.account', string="Price Difference Account", company_dependent=True,
+        help="This account is used in automated inventory valuation to "\
+             "record the price difference between a purchase order and its related vendor bill when validating this vendor bill.")
+    purchased_product_qty = fields.Float(compute='_compute_purchased_product_qty', string='Purchased')
+    purchase_method = fields.Selection([
+        ('purchase', 'On ordered quantities'),
+        ('receive', 'On received quantities'),
+    ], string="Control Policy", help="On ordered quantities: Control bills based on ordered quantities.\n"
+        "On received quantities: Control bills based on received quantities.", default="receive")
+    purchase_line_warn = fields.Selection(WARNING_MESSAGE, 'Purchase Order Line Warning', help=WARNING_HELP, required=True, default="no-message")
+    purchase_line_warn_msg = fields.Text('Message for Purchase Order Line')
+
+    def _compute_purchased_product_qty(self):
+        for template in self:
+            template.purchased_product_qty = float_round(sum([p.purchased_product_qty for p in template.product_variant_ids]), precision_rounding=template.uom_id.rounding)
+
+    @api.model
+    def get_import_templates(self):
+        res = super(ProductTemplate, self).get_import_templates()
+        if self.env.context.get('purchase_product_template'):
+            return [{
+                'label': _('Import Template for Products'),
+                'template': '/purchase/static/xls/product_purchase.xls'
+            }]
+        return res
+
+    def action_view_po(self):
+        action = self.env["ir.actions.actions"]._for_xml_id("purchase.action_purchase_order_report_all")
+        action['domain'] = ['&', ('state', 'in', ['purchase', 'done']), ('product_tmpl_id', 'in', self.ids)]
+        action['context'] = {
+            'graph_measure': 'qty_ordered',
+            'search_default_later_than_a_year_ago': True
+        }
+        return action
+
+
+class ProductProduct(models.Model):
+    _name = 'product.product'
+    _inherit = 'product.product'
+
+    purchased_product_qty = fields.Float(compute='_compute_purchased_product_qty', string='Purchased')
+
+    def _compute_purchased_product_qty(self):
+        date_from = fields.Datetime.to_string(fields.Date.context_today(self) - relativedelta(years=1))
+        domain = [
+            ('order_id.state', 'in', ['purchase', 'done']),
+            ('product_id', 'in', self.ids),
+            ('order_id.date_approve', '>=', date_from)
+        ]
+        order_lines = self.env['purchase.order.line'].read_group(domain, ['product_id', 'product_uom_qty'], ['product_id'])
+        purchased_data = dict([(data['product_id'][0], data['product_uom_qty']) for data in order_lines])
+        for product in self:
+            if not product.id:
+                product.purchased_product_qty = 0.0
+                continue
+            product.purchased_product_qty = float_round(purchased_data.get(product.id, 0), precision_rounding=product.uom_id.rounding)
+
+    def action_view_po(self):
+        action = self.env["ir.actions.actions"]._for_xml_id("purchase.action_purchase_order_report_all")
+        action['domain'] = ['&', ('state', 'in', ['purchase', 'done']), ('product_id', 'in', self.ids)]
+        action['context'] = {
+            'graph_measure': 'qty_ordered',
+            'search_default_later_than_a_year_ago': True
+        }
+        return action
+
+
+class ProductCategory(models.Model):
+    _inherit = "product.category"
+
+    property_account_creditor_price_difference_categ = fields.Many2one(
+        'account.account', string="Price Difference Account",
+        company_dependent=True,
+        help="This account will be used to value price difference between purchase price and accounting cost.")
+
+
+class ProductSupplierinfo(models.Model):
+    _inherit = "product.supplierinfo"
+
+    @api.onchange('name')
+    def _onchange_name(self):
+        self.currency_id = self.name.property_purchase_currency_id.id or self.env.company.currency_id.id