Added filter for expired and upcoming events

app/content/filters/registration.py

@@ -1,9 +1,16 @@
 from django_filters.rest_framework import FilterSet
-
+from django_filters import filters
 from app.content.models.registration import Registration
 
 
 class RegistrationFilter(FilterSet):
+    event_has_ended = filters.BooleanFilter(method="filter_event_has_ended")
+
     class Meta:
         model = Registration
         fields = ["has_attended", "is_on_wait"]
+
+    def filter_event_has_ended(self, queryset, name, value):
+        return queryset.filter(
+            event_has_ended=value
+        )

app/content/models/registration.py

@@ -275,6 +275,10 @@ def check_registration_has_started(self):
     def check_registration_has_ended(self):
         if self.event.end_registration_at < now():
             raise ValidationError("Påmeldingsfristen har passert")
+
+    @property
+    def event_has_ended(self):
+        return self.event.event_has_ended
 
     def get_submissions(self, type=None):
         from app.forms.models import EventForm, Submission