fixed typo

simulator/admin.py

@@ -1,5 +1,7 @@
 from django.contrib import admin
+from django.contrib import messages
 from .models import Carrier, AircraftBase, Equipment, Aerodrome, Flight
+from .services import cancel_flight_cascade
 # Register your models here.
 
 admin.site.register(Carrier)
@@ -19,6 +21,7 @@ class FlightAdmin(admin.ModelAdmin):  # type: ignore[type-arg]
         "arrival_time_display",
         "status_display",
     )
+    actions = ["cancel_selected_flights"]
 
     @admin.display(description="Flight")
     def flight_number_display(self, obj):
@@ -31,3 +34,24 @@ class FlightAdmin(admin.ModelAdmin):  # type: ignore[type-arg]
     @admin.display(description="Status")
     def status_display(self, obj):
         return obj.status
+
+    @admin.action(description="Cancel selected flights (and dependent flights)")
+    def cancel_selected_flights(self, request, queryset):
+        total_canceled = []
+        for flight in queryset:
+            if not flight.canceled:
+                canceled_flights = cancel_flight_cascade(flight)
+                total_canceled.extend(canceled_flights)
+
+        if total_canceled:
+            self.message_user(
+                request,
+                f"Canceled {len(total_canceled)} flight(s) including dependent flights.",
+                messages.SUCCESS,
+            )
+        else:
+            self.message_user(
+                request,
+                "No flights were canceled (already canceled).",
+                messages.WARNING,
+            )