fix: migrations (#1735)

game/migrations/0001_squashed_0025_levels_ordering_pt1.py

@@ -2874,6 +2874,7 @@ def create_level71():
     level59.save()
 
     episode9 = Episode(
+        pk=9,
         name="Blockly Brain Teasers",
         first_level=level68,
         r_branchiness=0.5,
@@ -3555,6 +3556,7 @@ def add_levels_80_to_107(apps, schema_editor):
         count += 1
 
     blocklyAndPythonEpisode = Episode(
+        pk=10,
         name="Introduction to Python",
         first_level=level80,
         r_branchiness=0.5,
@@ -3569,6 +3571,7 @@ def add_levels_80_to_107(apps, schema_editor):
     blocklyAndPythonEpisode.save()
 
     pythonOnlyEpisode = Episode(
+        pk=11,
         name="Python",
         first_level=level100,
         r_branchiness=0.5,

game/migrations/0100_reorder_python_levels.py

@@ -1,6 +1,7 @@
 from django.apps.registry import Apps
 from django.db import migrations
-from django.db.models import F
+from django.db.models import F, IntegerField, CharField
+from django.db.models.functions import Cast
 
 
 def adjust_python_den_episodes(apps: Apps, *args):
@@ -69,15 +70,21 @@ def rename_episode_12_levels(apps: Apps, *args):
     Level = apps.get_model("game", "Level")
 
     Level.objects.filter(default=True, name__in=range(110, 123)).update(
-        name=F("name") + 891
+        name=Cast(
+            Cast(F("name"), output_field=IntegerField()) + 891,
+            output_field=CharField()
+        )
     )
 
 
 def undo_rename_episode_12_levels(apps: Apps, *args):
     Level = apps.get_model("game", "Level")
 
     Level.objects.filter(default=True, name__in=range(1001, 1014)).update(
-        name=F("name") - 891
+        name=Cast(
+            Cast(F("name"), output_field=IntegerField()) - 891,
+            output_field=CharField()
+        )
     )