This script might fix some of our TB woes.

scripts/fix_tb_basedon.py

@@ -0,0 +1,67 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Finds revisions from the Thunderbird migration that don't have based_on
+set correctly, and are still relavent, and fixes that.
+
+Run this script like `./manage.py runscript fix_tb_basedon`.
+"""
+
+import sys
+from traceback import print_exc
+
+from django.db.models import Q
+
+from kitsune.wiki.models import Document, Revision
+
+
+def run():
+    try:
+        run_()
+    except Exception:
+        print_exc()
+        raise
+
+
+class Progress():
+
+    def __init__(self, total):
+        self.current = 0
+        self.total = total
+
+    def tick(self, incr=1):
+        self.current += incr
+        self.draw()
+
+    def draw(self):
+        self._wr('{0.current} / {0.total}\r'.format(self))
+
+    def _wr(self, s):
+        sys.stdout.write(s)
+        sys.stdout.flush()
+
+
+def run_():
+    to_process = list(Document.objects.filter(
+        ~Q(parent=None),
+        current_revision__based_on=None,
+        products__slug='thunderbird'))
+
+    if len(to_process) == 0:
+        print 'Nothing to do.'
+
+    prog = Progress(len(to_process))
+
+    for doc in to_process:
+        prog.tick()
+        oldest_parent_rev = (Revision.objects.filter(document=doc.parent)
+                             .order_by('id')[0])
+
+        # It has localizations, clearly it should be localizable.
+        if not doc.parent.is_localizable:
+            doc.parent.is_localizable = True
+            doc.parent.save()
+
+        doc.current_revision.based_on = oldest_parent_rev
+        doc.current_revision.save()