[11.0][FIX] web_widget_timepicker: zero value

web_widget_timepicker/readme/USAGE.rst

@@ -16,5 +16,3 @@ Additional bootstrap datetime-picker plugin options can be specified by an optio
     ...
     <field name="mytimefieldname" widget="timepicker" options="{'datepicker': {'stepping': 15}}"/>
     ...
-
-See the available options at `datetime-picker <https://eonasdan.github.io/bootstrap-datetimepicker/Options/>`_.

web_widget_timepicker/static/src/js/web_widget_timepicker.js

@@ -25,7 +25,8 @@ odoo.define('web_widget_timepicker', function (require) {
 
         setValue: function (value) {
             this.set({'value': value});
-            var formatted_value = value ? this._formatClient(value) : null;
+            var formatted_value = _.isNumber(value)
+                ? this._formatClient(value) : null;
             this.$input.val(formatted_value);
             if (this.picker) {
                 var fdate = new moment(formatted_value, this.options.format);
@@ -36,7 +37,7 @@ odoo.define('web_widget_timepicker', function (require) {
 
         getValue: function () {
             var value = this.get('value');
-            return value ? this._formatClient(value) : null;
+            return _.isNumber(value) ? this._formatClient(value) : null;
         },
 
         changeDatetime: function () {