[9.0][IMP] stock_cycle_count: The configuration of an inventory adjustment related to a cycle count cannot be modified.

stock_cycle_count/models/stock_inventory.py

@@ -3,7 +3,8 @@
 #   (http://www.eficent.com)
 # License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
 
-from openerp import api, fields, models
+from openerp import api, fields, models, _
+from openerp.exceptions import UserError
 
 PERCENT = 100.0
 
@@ -22,9 +23,9 @@ class StockInventory(models.Model):
         if not self.line_ids and self.state == 'done':
             self.inventory_accuracy = 100.0
 
-    cycle_count_id = fields.Many2one(comodel_name='stock.cycle.count',
-                                     string='Stock Cycle Count',
-                                     ondelete='cascade')
+    cycle_count_id = fields.Many2one(
+        comodel_name='stock.cycle.count', string='Stock Cycle Count',
+        ondelete='cascade', readonly=True)
     inventory_accuracy = fields.Float(string='Accuracy',
                                       compute=_compute_inventory_accuracy,
                                       digits=(3, 2))
@@ -34,3 +35,13 @@ class StockInventory(models.Model):
         if self.cycle_count_id:
             self.cycle_count_id.state = 'done'
         return super(StockInventory, self).action_done()
+
+    @api.multi
+    def write(self, vals):
+        for inventory in self:
+            if (inventory.cycle_count_id and 'state' not in vals.keys() and
+                    inventory.state == 'draft'):
+                raise UserError(
+                    _('You cannot modify the configuration of an Inventory '
+                      'Adjustment related to a Cycle Count.'))
+        return super(StockInventory, self).write(vals)