Allow multiple allocations for a topic

Support creation of disjoint slots for a given topic, to support the new
"scattered" topic layout we plan to use for HK.

Change-Id: I9bd382c05234a58a162dbcbb7efced396d0ff7e9

scheduling/management/commands/loadslots.py

@@ -44,9 +44,9 @@ class Command(BaseCommand):
             r = Room(code=roomcode, name=roomdesc)
             r.save()
 
-        for topicname, desc in data['topics'].iteritems():
+        for desc in data['allocations']:
             started = False
-            t = Topic.objects.get(name=topicname)
+            t = Topic.objects.get(name=desc['topic'])
             room = Room.objects.get(code=desc['room'])
             for (d, h) in slot_generator(data):
                 if (d == desc['start_day'] and h == desc['first_slot']):

slots.json.sample

@@ -21,10 +21,12 @@
             ]
         }
     ],
-    "topics": {
-        "Swift": {
+    "allocations": [
+        {
+            "topic": "Swift",
             "room": "A",
             "start_day": "2012-09-20", "first_slot": "09:30",
-            "end_day": "2012-09-21", "last_slot": "10:00" }
+            "end_day": "2012-09-21", "last_slot": "10:00"
         }
+    ]
 }