[FIX] stock: lock/unlock show details view

It is not possible to work directly on the operation tab
when the detailed operation tab is available. On detailed
operations page it is now impossible to add a new move line
when the picking is done and locked.

This commit add some condition in the view and add a check
in the move line creation. If the move line has a picking but
no move then we create it (mark as done directly)

3 files changed, 65 insertions, 2 deletions

diff --git a/addons/stock/models/stock_move_line.py b/addons/stock/models/stock_move_line.py
index a254417e11d..daeb05dbea1 100644
--- a/addons/stock/models/stock_move_line.py
+++ b/addons/stock/models/stock_move_line.py
@@ -155,6 +155,27 @@ class StockMoveLine(models.Model):
     @api.model
     def create(self, vals):
         vals['ordered_qty'] = vals.get('product_uom_qty')
+
+        # If the move line is directly create on the picking view.
+        # If this picking is already done we should generate an
+        # associated done move.
+        if 'picking_id' in vals and 'move_id' not in vals:
+            picking = self.env['stock.picking'].browse(vals['picking_id'])
+            if picking.state == 'done':
+                product = self.env['product.product'].browse(vals['product_id'])
+                new_move = self.env['stock.move'].create({
+                    'name': _('New Move:') + product.display_name,
+                    'product_id': product.id,
+                    'product_uom_qty': 'qty_done' in vals and vals['qty_done'] or 0,
+                    'product_uom': vals['product_uom_id'],
+                    'location_id': 'location_id' in vals and vals['location_id'] or picking.location_id.id,
+                    'location_dest_id': 'location_dest_id' in vals and vals['location_dest_id'] or picking.location_dest_id.id,
+                    'state': 'done',
+                    'additional': True,
+                    'picking_id': picking.id,
+                })
+                vals['move_id'] = new_move.id
+
         ml = super(StockMoveLine, self).create(vals)
         if ml.state == 'done':
             if ml.product_id.type == 'product':
diff --git a/addons/stock/tests/test_move.py b/addons/stock/tests/test_move.py
index ef23b7c9496..aa6adaf1778 100644
--- a/addons/stock/tests/test_move.py
+++ b/addons/stock/tests/test_move.py
@@ -3095,3 +3095,45 @@ class StockMove(TransactionCase):
             self.product1.type = 'product'
         move2._action_cancel()
         self.product1.type = 'product'
+
+    def test_edit_done_picking_1(self):
+        """ Add a new move line in a done picking should generate an
+        associated move.
+        """
+        self.env['stock.quant']._update_available_quantity(self.product1, self.stock_location, 12)
+        picking = self.env['stock.picking'].create({
+            'location_id': self.stock_location.id,
+            'location_dest_id': self.customer_location.id,
+            'picking_type_id': self.env.ref('stock.picking_type_in').id,
+        })
+        move1 = self.env['stock.move'].create({
+            'name': 'test_transit_1',
+            'location_id': self.stock_location.id,
+            'location_dest_id': self.customer_location.id,
+            'product_id': self.product1.id,
+            'product_uom': self.uom_unit.id,
+            'product_uom_qty': 10.0,
+            'picking_id': picking.id,
+        })
+        picking.action_confirm()
+        picking.action_assign()
+        move1.quantity_done = 10
+        picking.action_done()
+
+        self.assertEqual(len(picking.move_lines), 1, 'One move should exist for the picking.')
+        self.assertEqual(len(picking.move_line_ids), 1, 'One move line should exist for the picking.')
+
+        ml = self.env['stock.move.line'].create({
+            'location_id': self.stock_location.id,
+            'location_dest_id': self.customer_location.id,
+            'product_id': self.product1.id,
+            'product_uom_id': self.uom_unit.id,
+            'qty_done': 2.0,
+            'picking_id': picking.id,
+        })
+
+        self.assertEqual(len(picking.move_lines), 2, 'The new move associated to the move line does not exist.')
+        self.assertEqual(len(picking.move_line_ids), 2, 'It should be 2 move lines for the picking.')
+        self.assertTrue(ml.move_id in picking.move_lines, 'Links are not correct between picking, moves and move lines.')
+        self.assertEqual(picking.state, 'done', 'Picking should still done after adding a new move line.')
+        self.assertTrue(all(move.state == 'done' for move in picking.move_lines), 'Wrong state for move.')
diff --git a/addons/stock/views/stock_picking_views.xml b/addons/stock/views/stock_picking_views.xml
index 1a329e7db6b..118cdda7690 100644
--- a/addons/stock/views/stock_picking_views.xml
+++ b/addons/stock/views/stock_picking_views.xml
@@ -255,7 +255,7 @@
                     </group>
                     <notebook>
                         <page string="Detailed Operations" attrs="{'invisible': [('show_operations', '=', False)]}">
-                            <field name="move_line_ids" context="{'default_picking_id': id, 'default_location_id': location_id, 'default_location_dest_id': location_dest_id}">
+                            <field name="move_line_ids" attrs="{'readonly': [('state', '=', 'done'), ('is_locked', '=', True)]}" context="{'default_picking_id': id, 'default_location_id': location_id, 'default_location_dest_id': location_dest_id}">
                                 <tree editable="bottom" decoration-muted="result_package_id or (state == 'done' and is_locked == True)" decoration-danger="qty_done&gt;product_uom_qty and state!='done'" decoration-success="qty_done==product_uom_qty and state!='done' and not result_package_id">
                                     <field name="product_id" required="1"/>
                                     <field name="product_uom_id" attrs="{'readonly': [('state', '!=', 'draft')]}" groups="product.group_uom"/>
@@ -277,7 +277,7 @@
                         </page>
                         <page string="Operations">
                             <field name="id" invisible="1"/>
-                            <field name="move_lines" attrs="{'readonly': [('state', '=', 'done'), ('is_locked', '=', True)]}" context="{'picking_type_code': picking_type_code, 'default_picking_id': id, 'form_view_ref':'stock.view_move_picking_form', 'address_in_id': partner_id, 'default_picking_type_id': picking_type_id, 'default_location_id': location_id, 'default_location_dest_id': location_dest_id}">
+                            <field name="move_lines" attrs="{'readonly': ['|', '&amp;', ('show_operations', '=', True), ('state', '=', 'done'), ('is_locked', '=', True)]}" context="{'picking_type_code': picking_type_code, 'default_picking_id': id, 'form_view_ref':'stock.view_move_picking_form', 'address_in_id': partner_id, 'default_picking_type_id': picking_type_id, 'default_location_id': location_id, 'default_location_dest_id': location_dest_id}">
                                 <tree decoration-danger="state != 'done' and quantity_done > reserved_availability" decoration-muted="scrapped == True or state == 'cancel' or (state == 'done' and is_locked == True)" string="Stock Moves" editable="bottom">
                                     <field name="name" invisible="1"/>
                                     <field name="date_expected" invisible="1"/>