Enhance session admin to show room names

vendor/symposion/schedule/admin.py

@@ -62,6 +62,8 @@ class TrackAdmin(admin.ModelAdmin):
 class SessionAdmin(admin.ModelAdmin):
     model = Session,
     filter_vertical=["slots"]
+    list_display=("day","start","end","room_names")
+    list__filter=("slot__slotroom__room","day")
 
 admin.site.register(Day)
 admin.site.register(

vendor/symposion/schedule/models.py

@@ -267,14 +267,24 @@ class Session(models.Model):
                 return role
         return None
 
+    @property
+    def rooms(self):
+        return Room.objects.filter(slotroom__slot__in=self.slots.all()).distinct()
+
+    @property
+    def room_names(self):
+        return ', '.join(room.name for room in self.rooms)
+
     def __str__(self):
         start = self.start()
         end = self.end()
+        rooms = ', '.join(room.name for room in self.rooms)
         if start and end:
-            return "%s: %s - %s" % (
+            return "%s: %s - %s in %s" % (
                 self.day.date.strftime("%a"),
                 start.strftime("%X"),
-                end.strftime("%X")
+                end.strftime("%X"),
+                rooms
             )
         return ""