modify state fields for new state in record

__init__.py

@@ -27,6 +27,7 @@ def register():
         shipment.ShipmentIn,
         shipment.ShipmentDetailedStart,
         inventory.Inventory,
+        inventory.InventoryLine,
         inventory.CreateInventoriesStart,
         stock.WarehouseKardexStockStart,
         product.ChangeUdmProductStart,

inventory.py

@@ -32,6 +32,18 @@ class CreateInventories(metaclass=PoolMeta):
         return inventory
 
 
+class InventoryLine(metaclass=PoolMeta):
+    'Stock Inventory Line'
+    __name__ = 'stock.inventory.line'
+
+    @classmethod
+    def __setup__(cls):
+        super(InventoryLine, cls).__setup__()
+        cls._states = {
+            'readonly': ~Eval('inventory_state').in_(["draft", "checkup", "pre_count"])
+            }
+        cls.quantity.states = cls._states
+        
 class Inventory(metaclass=PoolMeta):
     'Stock Inventory'
     __name__ = 'stock.inventory'
@@ -47,6 +59,11 @@ class Inventory(metaclass=PoolMeta):
     def __setup__(cls):
         super(Inventory, cls).__setup__()
         cls.state.selection.extend([('pre_count', 'Pre-count'), ('checkup', 'Checkup')])
+        cls._states = {
+            'readonly': (~Eval('state').in_(["draft", "checkup", "pre_count"]) | ~Eval('location')
+                | ~Eval('date')),
+            }
+        cls.lines.states = cls._states
         cls._transitions |= set((
                 ('draft', 'checkup'),
                 ('checkup', 'draft'),