Todo auch ohne Wiederholung möglich

todo/forms.py

@@ -16,6 +16,8 @@ class TodoForm(forms.ModelForm):
                   'duration': 'Was meinst du, wie lange die Aufgabe dauert? (in Minuten) *',
                   'recurrences': 'Wiederholungen'}
 
+    # def clean_rank(selfself):
+
 
 class SelectionForm(forms.Form):
     duration_hours = forms.IntegerField(

todo/models.py

@@ -11,7 +11,7 @@ class Todo(models.Model):
     duration = models.IntegerField(default=15)
     created = models.DateField(default=datetime.date.today)
     rank = models.IntegerField(default=1)
-    recurrences = RecurrenceField(null=True)
+    recurrences = RecurrenceField(blank=True, null=True)
 
     def __str__(self):
         return self.text

todo/views.py

+from django.db.models import Max
 from django.http import HttpResponseRedirect
 from django.shortcuts import render
 from django.contrib import messages
@@ -19,7 +20,10 @@ def add_todo(request):
     if request.method == 'POST':
         form = TodoForm(request.POST, instance=todo)
         if form.is_valid():
-            form.save()
+            todo = form.instance
+            max_rank = Todo.objects.all().aggregate(Max('rank')).get('rank__max')
+            todo.rank = max_rank + 1
+            todo.save()
             messages.success(request, "Dein Todo wurde abgespeichert")
             return HttpResponseRedirect(reverse_lazy('landing_page'))
         else: