Added traveller count + hyperlinks to bus and shuttle view

busManager/coord/admin.py

@@ -60,14 +60,14 @@ class CompanyAdmin(MyImportExportModelAdmin, admin.ModelAdmin):
         url = (
                 reverse("admin:coord_bus_changelist")
                 + "?"
-                + urlencode({"company__id": f"{obj.id}"})
+                + urlencode({"company__id__exact": f"{obj.id}"})
         )
         return format_html('<a href="{}">{} Buses</a>', url, count)
 
 
 class DriverInline(admin.StackedInline):
     model = Driver
-    extra = 1
+    extra = 0
 
 
 class BusStopInline(admin.TabularInline):
@@ -79,9 +79,24 @@ class BusStopInline(admin.TabularInline):
 @admin.register(Bus)
 class BusesAdmin(MyImportExportModelAdmin, admin.ModelAdmin, BusRollMixin):
     list_filter = ["company"]
-    list_display = ["route_name", "company", "contract_number"]
+    list_display = ["route_name", "company", "contract_number", "route_travellers"]
+    readonly_fields = ["traveller_count"]
     actions = ["email_company", "bus_roll"]
     inlines = [DriverInline, BusStopInline]
+    fieldsets = [
+        (None, {'fields': [
+            "company", "route_name", "contract_number", "registration",
+            "traveller_count", "seating_capacity", "make", "model", "notes"
+        ]})
+    ]
+
+    def route_travellers(self, obj):
+        url = (
+                reverse("admin:coord_traveller_changelist")
+                + "?"
+                + urlencode({"bus_stops__bus__id__exact": f"{obj.id}"})
+        )
+        return format_html('<a href="{}">{} Travellers</a>', url, obj.traveller_count())
 
 
 @admin.register(BusStop)
@@ -205,7 +220,15 @@ class SettingAdmin(MyImportExportModelAdmin, admin.ModelAdmin):
 
 @admin.register(Shuttle)
 class ShuttleAdmin(MyImportExportModelAdmin, admin.ModelAdmin):
-    list_display = ["__str__", "school", "bus"]
+    list_display = ["__str__", "school", "bus", "shuttle_travellers"]
+
+    def shuttle_travellers(self, obj):
+        url = (
+                reverse("admin:coord_traveller_changelist")
+                + "?"
+                + urlencode({"shuttle__id__exact": f"{obj.id}"})
+        )
+        return format_html('<a href="{}">{} Travellers</a>', url, obj.traveller_count())
 
 
 @admin.register(Driver)