[FIX] product: pricelist items

With the pricelist, it is possible to define a pricelist just for
a variant. But in the product.product.form, only the pricelist items
linked to the product template could be displayed.
The field item_ids has been created in product.product model to display
all the pricelist applied on a product.

opw:674700

addons/product/product.py

@@ -942,6 +942,13 @@ class product_product(osv.osv):
             break
         return res
 
+    def _get_items(self, cr, uid, ids, field_name, args, context=None):
+        res = {}
+        for prod in self.browse(cr, uid, ids, context=context):
+            item_ids = self.pool['product.pricelist.item'].search(cr, uid, ['|', ('product_id', '=', prod.id), ('product_tmpl_id', '=', prod.product_tmpl_id.id)], context=context)
+            res[prod.id] = item_ids
+        return res
+
     _columns = {
         'price': fields.function(_product_price, fnct_inv=_set_product_lst_price, type='float', string='Price', digits_compute=dp.get_precision('Product Price')),
         'price_extra': fields.function(_get_price_extra, type='float', string='Variant Extra Price', help="This is the sum of the extra price of all attributes", digits_compute=dp.get_precision('Product Price')),
@@ -978,6 +985,7 @@ class product_product(osv.osv):
                                           groups="base.group_user", string="Cost"),
         'volume': fields.float('Volume', help="The volume in m3."),
         'weight': fields.float('Gross Weight', digits_compute=dp.get_precision('Stock Weight'), help="The weight of the contents in Kg, not including any packaging, etc."),
+        'item_ids': fields.function(_get_items, type='many2many', relation='product.pricelist.item', string='Pricelist Items', store=False),
     }
 
     _defaults = {

addons/product/product_view.xml

@@ -470,6 +470,22 @@
                 <field name="name" position="after">
                     <field name="product_tmpl_id" class="oe_inline" readonly="1" invisible="1" attrs="{'required': [('id', '!=', False)]}"/>
                 </field>
+                <field name="item_ids" position="replace">
+                    <field name="item_ids" widget="many2many">
+                        <tree string="Pricelist Items">
+                            <field name="name" string="Applicable On"/>
+                            <field name="min_quantity"/>
+                            <field name="date_start"/>
+                            <field name="date_end"/>
+                            <field name="price" string="Price"/>
+                            <field name="base" invisible="1"/>
+                            <field name="sequence" invisible="1"/>
+                            <field name="price_discount" invisible="1"/>
+                            <field name="applied_on" invisible="1"/>
+                            <field name="compute_price" invisible="1"/>
+                        </tree>
+                    </field>
+                </field>
                 <xpath expr="//div[@class='oe_title']" position="inside">
                     <field name="attribute_value_ids" widget="many2many_tags" groups="product.group_product_variant"/>
                 </xpath>