[FIX] web: fix traceback when creating an event starting at 12am or 11.30pm

Since the switch to the new views, clicking on a 12am cell in a week
view of calendar triggers a traceback. A similar issue happens when
creating an event at 11.30pm. This is due to the fact that events
starting or ending at 12am are suspected to be incorrect and are thus
checked against the database.

This commit fixes both issues, by requiring that database checks be
carried out only if the records actually exist in the database.

1 files changed, 4 insertions, 3 deletions

diff --git a/addons/web/static/src/js/views/calendar/calendar_renderer.js b/addons/web/static/src/js/views/calendar/calendar_renderer.js
index 4f5719063ff..5fb79cfa3a0 100644
--- a/addons/web/static/src/js/views/calendar/calendar_renderer.js
+++ b/addons/web/static/src/js/views/calendar/calendar_renderer.js
@@ -322,10 +322,11 @@ return AbstractRenderer.extend({
                 element.addClass($render.attr('class'));
                 var display_hour = '';
                 if (!event.allDay) {
-                    display_hour = (event.start.format('HH:mm') === '00:00' ? event.r_start.format('HH:mm') : event.start.format('HH:mm')) + ' - ' +
-                        (event.end && event.end.format('HH:mm') !== '00:00' ? event.end.format('HH:mm') : event.r_end.format('HH:mm'));
+                    var start = event.r_start || event.start;
+                    var end = event.r_end || event.end;
+                    display_hour = start.format('HH:mm') + ' - ' + end.format('HH:mm');
                     if (display_hour === '00:00 - 00:00') {
-                        display_hour = _t('All the day');
+                        display_hour = _t('All day');
                     }
                 }
                 element.find('.fc-content .fc-time').text(display_hour);