- // TODO: Determine finish based on the existing record start and $new_duration.
- // By probably using PHP time functions or toMinutes().
-
- // Then check whether new duration puts the existing records beyond 24:00 boundary.
- // and call the existing overlaps function.
+ // We do have start time.
+ // Quick test if new duration is less then already existing.
+ $newMinutes = ttTimeHelper::toMinutes($new_duration);
+ $oldMinutes = ttTimeHelper::toMinutes($oldDuration);
+ if ($newMinutes < $oldMinutes)
+ return true; // Safe to modify.
+
+ // Does the new duration put the record beyond 24:00 boundary?
+ $startMinutes = ttTimeHelper::toMinutes($val['start']);
+ $newEndMinutes = $startMinutes + $newMinutes;
+ if ($newEndMinutes > 1440) {
+ // Invalid duration, as new duration puts the record beyond current day.
+ $err->add($i18n->getKey('error.field'), $i18n->getKey('label.duration'));
+ return false;
+ }