mrp_average_cost: Fix decimal precision

product_usability: add link to show history of standard price

product_usability/product.py

@@ -16,6 +16,17 @@ class ProductTemplate(models.Model):
     purchase_ok = fields.Boolean(track_visibility='onchange')
     active = fields.Boolean(track_visibility='onchange')
 
+    def show_product_price_history(self):
+        self.ensure_one()
+        products = self.env['product.product'].search(
+            [('product_tmpl_id', '=', self._context['active_id'])])
+        action = self.env['ir.actions.act_window'].for_xml_id(
+            'product_usability', 'product_price_history_action')
+        action.update({
+            'domain': "[('id', 'in', %s)]" % products.ids,
+        })
+        return action
+
 
 class ProductProduct(models.Model):
     _inherit = 'product.product'
@@ -38,9 +49,26 @@ class ProductProduct(models.Model):
         'unique(default_code)',
         'This internal reference already exists!')]
 
+    def show_product_price_history(self):
+        self.ensure_one()
+        action = self.env['ir.actions.act_window'].for_xml_id(
+            'product_usability', 'product_price_history_action')
+        action.update({
+            'domain': "[('product_id', '=', %d)]" % self.ids[0],
+        })
+        return action
+
 
 class ProductSupplierinfo(models.Model):
     _inherit = 'product.supplierinfo'
 
     name = fields.Many2one(
         domain=[('supplier', '=', True), ('parent_id', '=', False)])
+
+
+class ProductPriceHistory(models.Model):
+    _inherit = 'product.price.history'
+
+    company_currency_id = fields.Many2one(
+        related='company_id.currency_id', readonly=True,
+        string='Company Currency')

product_usability/product_view.xml

@@ -16,8 +16,9 @@
             <group name="main">
                 <field name="product_id" invisible="not context.get('product_price_history_main_view')"/>
                 <field name="datetime"/>
-                <field name="cost"/>
+                <field name="cost" widget="monetary" options="{'currency_field': 'company_currency_id'}"/>
                 <field name="company_id" groups="base.group_multi_company"/>
+                <field name="company_currency_id" invisible="1"/>
             </group>
         </form>
     </field>
@@ -30,8 +31,9 @@
         <tree string="Product Price History" editable="bottom">
             <field name="product_id" invisible="not context.get('product_price_history_main_view')"/>
             <field name="datetime"/>
-            <field name="cost"/>
+            <field name="cost" widget="monetary" options="{'currency_field': 'company_currency_id'}"/>
             <field name="company_id" groups="base.group_multi_company"/>
+            <field name="company_currency_id" invisible="1"/>
         </tree>
     </field>
 </record>
@@ -67,13 +69,9 @@
     <field name="model">product.template</field>
     <field name="inherit_id" ref="product.product_template_form_view" />
     <field name="arch" type="xml">
-            <!--
-        <group name="general" position="after">
-            <group name="price_history" string="Price History">
-                <field name="price_history_ids" nolabel="1"/>
-            </group>
-        </group>
-            -->
+        <field name="standard_price" class="oe_inline" position="after">
+            <button name="show_product_price_history" class="oe_inline oe_link" type="object" string="Show History" context="{'active_id': active_id}"/>
+        </field>
         <!-- START for wider 'name' field -->
         <!-- Don't make it too big, othesize computers with small resolutions
         will see the product name + image under the block of buttons -->