Add more information on stock move form

issue11768
review439591003

stock.py

@@ -7,6 +7,7 @@ from trytond.model import ModelView, Workflow, fields
 from trytond.modules.product import price_digits, round_price
 from trytond.modules.stock_shipment_cost import ShipmentCostMixin
 from trytond.pool import Pool, PoolMeta
+from trytond.pyson import Eval
 
 
 class ShipmentIn(ShipmentCostMixin, metaclass=PoolMeta):
@@ -110,8 +111,11 @@ class ShipmentIn(ShipmentCostMixin, metaclass=PoolMeta):
 
 class Move(metaclass=PoolMeta):
     __name__ = 'stock.move'
-    unit_shipment_cost = fields.Numeric('Unit Shipment Cost',
-        digits=price_digits, readonly=True)
+    unit_shipment_cost = fields.Numeric(
+        "Unit Shipment Cost", digits=price_digits, readonly=True,
+        states={
+            'invisible': ~Eval('unit_shipment_cost'),
+            })
 
     def _compute_unit_price(self, unit_price):
         if self.unit_shipment_cost:

stock.xml

@@ -3,6 +3,12 @@
 this repository contains the full copyright notices and license terms. -->
 <tryton>
     <data>
+        <record model="ir.ui.view" id="stock_move_view_form">
+            <field name="model">stock.move</field>
+            <field name="inherit" ref="stock.move_view_form"/>
+            <field name="name">stock_move_form</field>
+        </record>
+
         <record model="ir.ui.view" id="shipment_in_view_form">
             <field name="model">stock.shipment.in</field>
             <field name="type" eval="None"/>

view/stock_move_form.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<data>
+    <xpath expr="//field[@name='shipment_out_cost_price']" position="after">
+        <label name="unit_shipment_cost"/>
+        <field name="unit_shipment_cost"/>
+    </xpath>
+</data>