[FWP] - Forward porting changes from #1253

onchange_helper/__manifest__.py

@@ -1,7 +1,8 @@
 # Copyright 2016-2017 Akretion (http://www.akretion.com)
 # License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
 
-{'name': 'Onchange Helper',
+{
+    'name': 'Onchange Helper',
     'version': '12.0.1.0.0',
     'summary': 'Technical module that ease execution of onchange in Python code',
     'author': 'Akretion,Camptocamp,Odoo Community Association (OCA)',
@@ -10,4 +11,4 @@
     'category': 'Generic Modules',
     'depends': ['base'],
     'installable': True,
- }
+}

onchange_helper/models/base.py

@@ -5,47 +5,47 @@
 from odoo import api, models
 
 
-def get_new_values(model, record, on_change_result):
+class Base(models.AbstractModel):
+    _inherit = 'base'
+
+    @api.model
+    def _get_new_values(self, record, on_change_result):
         vals = on_change_result.get('value', {})
         new_values = {}
         for fieldname, value in vals.items():
             if fieldname not in record:
-            column = model._fields[fieldname]
+                column = self._fields[fieldname]
                 if value and column.type == 'many2one':
                     value = value[0]  # many2one are tuple (id, name)
                 new_values[fieldname] = value
         return new_values
 
-
-@api.model
-def play_onchanges(self, values, onchange_fields):
+    @api.model
+    def play_onchanges(self, values, onchange_fields):
         onchange_specs = self._onchange_spec()
         # we need all fields in the dict even the empty ones
         # otherwise 'onchange()' will not apply changes to them
         all_values = values.copy()
+        # If self is a record (play onchange on existing record)
+        # we take the value of the field
+        # If self is an empty record we will have an empty value
+        if self:
+            self.ensure_one()
+            record_values = self._convert_to_write(self.read()[0])
+        else:
+            record_values = {}
         for field in self._fields:
             if field not in all_values:
-            all_values[field] = False
-
-    # we work on a temporary record
-    new_record = self.new(all_values)
+                all_values[field] = record_values.get(field, False)
 
         new_values = {}
         for field in onchange_fields:
-        onchange_values = new_record.onchange(all_values,
-                                              field, onchange_specs)
-        new_values.update(get_new_values(self, values, onchange_values))
+            onchange_values = self.onchange(all_values, field, onchange_specs)
+            new_values.update(self._get_new_values(values, onchange_values))
             all_values.update(new_values)
 
-    res = {f: v for f, v in all_values.items()
-           if f in values or f in new_values}
-    return res
-
-
-class Base(models.AbstractModel):
-    _inherit = 'base'
-
-    def _setup_complete(self):
-        if not hasattr(models.BaseModel, 'play_onchanges'):
-            setattr(models.BaseModel, 'play_onchanges', play_onchanges)
-        return super(Base, self)._setup_complete()
+        return {
+            f: v
+            for f, v in all_values.items()
+            if not self._fields[f].compute and (f in values or f in new_values)
+        }

onchange_helper/readme/USAGE.rst

@@ -10,3 +10,13 @@ Example if you want to create a sale order and you want to get the values relati
     `vals = self.env['sale.order'].play_onchanges(vals, ['partner_id'])`
 
 Then, `vals` will be updated with partner_invoice_id, partner_shipping_id, pricelist_id, etc...
+
+You can also use it on existing record for example:
+
+     `vals = {'partner_shipping_id': 1}`
+
+     `vals = sale.play_onchanges(vals, ['partner_shipping_id'])`
+
+Then the onchange will be played with the vals passed and the existing vals of the sale. `vals` will be updated with partner_invoice_id, pricelist_id, etc..
+
+Behind the scene, `play_onchanges` will execute **all the methods** registered for the list of changed fields, so you do not have to call manually each onchange. To avoid performance issue when the method is called on a record, the record will be transformed into a memory record before calling the registered methods to avoid to trigger SQL updates command when values are assigned to the record by the onchange

onchange_helper/tests/test_onchange_helper.py

@@ -5,13 +5,11 @@ from odoo.tests.common import TransactionCase
 
 
 class TestOnchangeHelper(TransactionCase):
-
     def test01_partner_parent(self):
         main_partner = self.env.ref('base.main_partner')
         input_vals = dict(partner_id=main_partner.id)
         updated_vals = self.env['res.partner'].play_onchanges(
-            input_vals,
-            ['parent_id']
+            input_vals, ['parent_id']
         )
         self.assertIn('commercial_partner_id', updated_vals)
         self.assertIn('display_name', updated_vals)
@@ -21,8 +19,25 @@ class TestOnchangeHelper(TransactionCase):
         partner_demo = self.env.ref('base.partner_demo')
         input_vals = {'partner_id': partner_demo.id}
         updated_vals = self.env['res.partner'].play_onchanges(
-            input_vals,
-            ['country_id']
+            input_vals, ['country_id']
         )
         self.assertIn('contact_address', updated_vals)
         self.assertIn('partner_id', updated_vals)
+
+    def test_playing_onchange_on_model(self):
+        result = self.env['res.partner'].play_onchanges(
+            {'company_type': 'company'}, ['company_type']
+        )
+        self.assertEqual(result['is_company'], True)
+
+    def test_playing_onchange_on_record(self):
+        company = self.env.ref('base.main_company')
+        result = company.play_onchanges(
+            {'email': 'contact@akretion.com'}, ['email']
+        )
+        self.assertEqual(
+            result['rml_footer'],
+            u'Phone: +1 555 123 8069 | Email: contact@akretion.com | '
+            u'Website: http://www.example.com',
+        )
+        self.assertEqual(company.email, u'info@yourcompany.example.com')