[REF] mrp_account: adapt to valuation layers

A finished move is considered as an incoming move and will pass by
_create_in_svl. We thus compute the price_unit that will be set on the
valuation layer.

We also set a stat button on the MO displaying the valuation
layers, similar to the one on the picking.

task-1875873

addons/mrp_account/__manifest__.py

@@ -21,7 +21,10 @@ If the automated inventory valuation is active, the necessary accounting entries
     'depends': ['mrp', 'stock_account'],
     "init_xml" : [],
     "demo_xml" : [],
-    "data": ["views/product_views.xml"],
+    "data": [
+        "views/product_views.xml",
+        "views/mrp_production_views.xml",
+    ],
     'installable': True,
     'auto_install': True,
 }

addons/mrp_account/models/mrp_production.py

@@ -32,8 +32,7 @@ class MrpProduction(models.Model):
             if finished_move.product_id.cost_method in ('fifo', 'average'):
                 qty_done = finished_move.product_uom._compute_quantity(finished_move.quantity_done, finished_move.product_id.uom_id)
                 extra_cost = self.extra_cost * qty_done
-                finished_move.price_unit = (sum([-m.value for m in consumed_moves]) + work_center_cost + extra_cost) / qty_done
-                finished_move.value = sum([-m.value for m in consumed_moves]) + work_center_cost + extra_cost
+                finished_move.price_unit = (sum([-m.stock_valuation_layer_ids.value for m in consumed_moves]) + work_center_cost + extra_cost) / qty_done
         return True
 
     def _prepare_wc_analytic_line(self, wc_line):
@@ -69,3 +68,10 @@ class MrpProduction(models.Model):
         res = super(MrpProduction, self).button_mark_done()
         self._costs_generate()
         return res
+
+    def action_view_stock_valuation_layers(self):
+        self.ensure_one()
+        domain = [('id', 'in', (self.move_raw_ids + self.move_finished_ids).stock_valuation_layer_ids.ids)]
+        action = self.env.ref('stock_account.stock_valuation_layer_action').read()[0]
+        return dict(action, domain=domain)
+

addons/mrp_account/tests/test_mrp_account.py

@@ -83,7 +83,7 @@ class TestMrpAccount(common.TransactionCase):
         produce_wizard = produce_form.save()
         produce_wizard.do_produce()
         production_table.post_inventory()
-        move_value = production_table.move_finished_ids.filtered(lambda x: x.state == "done").value
+        move_value = production_table.move_finished_ids.filtered(lambda x: x.state == "done").stock_valuation_layer_ids.value
 
         # 1 table head at 20 + 4 table leg at 15 + 4 bolt at 10 + 10 screw at 10 + 1*20 (extra cost)
         self.assertEqual(move_value, 141, 'Thing should have the correct price')

addons/mrp_account/views/mrp_production_views.xml

@@ -0,0 +1,15 @@
+<odoo>
+    <record id="mrp_production_form_view_inherited" model="ir.ui.view">
+        <field name="name">mrp.production.view.inherited</field>
+        <field name="model">mrp.production</field>
+        <field name="inherit_id" ref="mrp.mrp_production_form_view" />
+        <field name="arch" type="xml">
+            <xpath expr="//div[@name='button_box']" position="inside">
+                <button string="Valuation" type="object"
+                    name="action_view_stock_valuation_layers"
+                    class="oe_stat_button" icon="fa-dollar" groups="stock.group_stock_manager"
+                    attrs="{'invisible': [('state', 'not in', ['done'])]}" />
+            </xpath>
+        </field>
+    </record>
+</odoo>