[FIX] web: datepicker: crash on invalid date

There is an open issue on the tempusdominus lib:
https://github.com/tempusdominus/bootstrap-4/issues/223

It occurs when there is a valid value in a date(time) field, and
the user unsets it by setting an invalid one.

This rev. fixes the issue in Odoo by preventing to reach the buggy
piece of code in the lib. In a few words, when the user sets an
invalid date, we reset the previous valid date (which is what the
lib tries to do anyway).

Task 2057009

closes odoo/odoo#36211

Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>


Co-authored-by: Aaron Bohy <aab@odoo.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/addons/web/static/src/js/widgets/date_picker.js b/addons/web/static/src/js/widgets/date_picker.js
index df9601b3a04..90e77aafb41 100644
--- a/addons/web/static/src/js/widgets/date_picker.js
+++ b/addons/web/static/src/js/widgets/date_picker.js
@@ -84,8 +84,8 @@ var DateWidget = Widget.extend({
      * set datetime value
      */
     changeDatetime: function () {
+        var oldValue = this.getValue();
         if (this.isValid()) {
-            var oldValue = this.getValue();
             this._setValueFromUi();
             var newValue = this.getValue();
             var hasChanged = !oldValue !== !newValue;
@@ -102,6 +102,9 @@ var DateWidget = Widget.extend({
                 }
                 this.trigger("datetime_changed");
             }
+        } else {
+            var formattedValue = oldValue ? this._formatClient(oldValue) : null;
+            this.$input.val(formattedValue);
         }
     },
     /**