Feature: Es wird beachtet, dass es schon vorhandene Daten geben kann

ui/src/routes/WorkingHours/Formular.svelte

@@ -9,20 +9,14 @@
     export let newRecord = false
     const Controller = {
         'saveRecord': () => {
-            if (newRecord === true) {
-                WorkingHoursRepository.add(activeRecord).then(() => {
-                    Controller.nextDay()
-                });
-            } else {
-                WorkingHoursRepository.update(activeRecord.workingDay, activeRecord).then(() => {
-                    Controller.nextDay()
-                });
-            }
+            WorkingHoursRepository.addOrUpdate(activeRecord.workingDay, activeRecord).then(() => {
+                Controller.nextDay()
+            });
         },
         'nextDay': () => {
             let actDate = new TimekeepingDate(activeRecord.workingDay)
             let nextDay = actDate.getNextDay()
-            activeRecord = {workingTime: '00:00:00', workingDay: nextDay.getDateString()}
+            activeRecord = WorkingHoursRepository.readOrNew(nextDay.getDateString())
         },
         'cancelActiveRecord': () => {
             activeRecord = null;

ui/src/routes/WorkingHours/List.svelte

@@ -21,8 +21,7 @@
         },
         'newRecord': () => {
             const actDate = new TimekeepingDate()
-            activeRecord = {workingTime: '00:00:00', workingDay: actDate.getDateString()}
-            newRecord = true;
+            activeRecord = WorkingHoursRepository.readOrNew(actDate.getDateString())
         },
         'selectActiveRecord': record => WorkingHoursRepository.read(record.workingDay).then(data => {
             if (data === null) {