[FIX] web: digits option for aggregate is taken into account

If you have a currency with 3 decimals, when you show a list view
grouped, you might have result like:

[group partner 1 : amount : 4.4€]
-                  amount : 1.11€
-                  amount : 3.33€

which is a little odd, it is not that odd since the groupings are an
approximation (eg. you could have a line in EUR and a line in USD and
the grouping value would be the sum of both line).

But there is no way to specify another precision, and since this is a
grouping it could be of line of different currencies so we can't use the
lines currency to decide.

With this changeset, having for example:

<field name="amount" digits="[69,3]"/>

with `digits` attribute is taken into account for the aggregate value
and it would be displayed with 3 decimals.

Without the fix, the added test fails with:

    aggregates monetary use digits attribute if available
    Expected: "2000.000", Result: "2000.00"

opw-2195042
closes #45545

closes odoo/odoo#46094

X-original-commit: 4dd293c71851d0c6e9ffe09402cf54cfe889f402
Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>

addons/web/static/src/js/views/list/list_renderer.js

@@ -352,7 +352,10 @@ var ListRenderer = BasicRenderer.extend({
                 if (!formatFunc) {
                     formatFunc = field_utils.format[field.type];
                 }
-                var formattedValue = formatFunc(value, field, { escape: true });
+                var formattedValue = formatFunc(value, field, {
+                    escape: true,
+                    digits: column.attrs.digits ? JSON.parse(column.attrs.digits) : undefined,
+                });
                 $cell.addClass('o_list_number').attr('title', help).html(formattedValue);
             }
             return $cell;

addons/web/static/tests/views/list_tests.js

@@ -1412,6 +1412,26 @@ QUnit.module('Views', {
         list.destroy();
     });
 
+    QUnit.test('aggregates digits can be set with digits field attribute', async function (assert) {
+        assert.expect(2);
+
+        var list = await createView({
+            View: ListView,
+            model: 'foo',
+            data: this.data,
+            arch: '<tree>' +
+                    '<field name="amount" widget="monetary" sum="Sum" digits="[69,3]"/>' +
+                '</tree>',
+        });
+
+        assert.strictEqual(list.$('.o_data_row td:nth(1)').text(), '1200.00',
+            "field should still be formatted based on currency");
+        assert.strictEqual(list.$('tfoot td:nth(1)').text(), '2000.000',
+            "aggregates monetary use digits attribute if available");
+
+        list.destroy();
+    });
+
     QUnit.test('groups can be sorted on aggregates', async function (assert) {
         assert.expect(10);
         var list = await createView({