[FIX] web: blank value in many2many_tags for multi_edit popup

Let's assume a list that is multi editable and contains a m2m field
displayed with widget many2many_tags. Moreover, there are enough
values in the comodel s.t. the 'Search More' option is available
in the many2many_tags dropdown, and field 'display_name' isn't
in the list view that opens in dialog.

Enter multi-edition, edit the many2one field to add a value
(click on 'Search More', and pick a value from the list): the
picked value isn't correctly displayed in the confirmation dialog.

The issue occurred because we didn't wait for the display_name to
be fetched before opening the dialog.

Task : 2150384

closes odoo/odoo#57481

X-original-commit: ccf5834045d8b4fff9af7ddf60814c3a640e8318
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>
Co-authored-by: Dhruv Patel <dhp@odoo.com>

2 files changed, 42 insertions, 1 deletions

diff --git a/addons/web/static/src/js/views/basic/basic_model.js b/addons/web/static/src/js/views/basic/basic_model.js
index 5be80268cc6..bb599b2e859 100644
--- a/addons/web/static/src/js/views/basic/basic_model.js
+++ b/addons/web/static/src/js/views/basic/basic_model.js
@@ -1515,7 +1515,9 @@ var BasicModel = AbstractModel.extend({
         }
 
         if (options.notifyChange === false) {
-            return Promise.resolve(_.keys(changes));
+            return Promise.all(defs).then(function () {
+                return Promise.resolve(_.keys(changes));
+            });
         }
 
         return Promise.all(defs).then(function () {
diff --git a/addons/web/static/tests/views/list_tests.js b/addons/web/static/tests/views/list_tests.js
index 4d8cf86460e..2ea2e0396a9 100644
--- a/addons/web/static/tests/views/list_tests.js
+++ b/addons/web/static/tests/views/list_tests.js
@@ -7434,6 +7434,45 @@ QUnit.module('Views', {
         list.destroy();
     });
 
+    QUnit.test('multi edition: many2many_tags in many2many field', async function (assert) {
+        assert.expect(5);
+
+        for (let i = 4; i <= 10; i++) {
+            this.data.bar.records.push({ id: i, display_name: "Value" + i});
+        }
+
+        const list = await createView({
+            View: ListView,
+            model: 'foo',
+            data: this.data,
+            arch: '<tree multi_edit="1"><field name="m2m" widget="many2many_tags"/></tree>',
+            archs: {
+                'bar,false,list': '<tree><field name="name"/></tree>',
+                'bar,false,search': '<search></search>',
+            },
+        });
+
+        assert.containsN(list, '.o_list_record_selector input:enabled', 5);
+
+        // select two records and enter edit mode
+        await testUtils.dom.click(list.$('.o_data_row:eq(0) .o_list_record_selector input'));
+        await testUtils.dom.click(list.$('.o_data_row:eq(1) .o_list_record_selector input'));
+        await testUtils.dom.click(list.$('.o_data_row:eq(0) .o_data_cell'));
+
+        await testUtils.fields.many2one.clickOpenDropdown("m2m");
+        await testUtils.fields.many2one.clickItem("m2m", "Search More");
+        assert.containsOnce(document.body, '.modal .o_list_view', "should have open the modal");
+
+        await testUtils.dom.click($('.modal .o_list_view .o_data_row:first'));
+
+        assert.containsOnce(document.body, ".modal [role='alert']", "should have open the confirmation modal");
+        assert.containsN(document.body, ".modal .o_field_many2manytags .badge", 3);
+        assert.strictEqual($(".modal .o_field_many2manytags .badge:last").text().trim(), "Value 3",
+            "should have display_name in badge");
+
+        list.destroy();
+    });
+
     QUnit.test('editable list view: multi edition of many2one: set same value', async function (assert) {
         assert.expect(4);