ignore plugins with \x00 in name

pandora/user/migrations/0004_jsonfield.py

@@ -6,6 +6,20 @@ import django.contrib.postgres.fields.jsonb
 from django.db import migrations, models
 
 
+def cleanup_sessiondata(apps, schema_editor):
+    SessionData = apps.get_model("user", "SessionData")
+    for data in SessionData.objects.all():
+        changed = False
+        plugins = []
+        for p in data.info.get('navigator', {}).get('plugins', []):
+            if p and '\x00' not in p:
+                plugins.append(p)
+            else:
+                changed = True
+        if changed:
+            data.info['navigator']['plugins'] = plugins
+            data.save()
+
 class Migration(migrations.Migration):
 
     dependencies = [
@@ -13,6 +27,7 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
+        migrations.RunPython(cleanup_sessiondata),
         migrations.RunSQL(
             'ALTER TABLE "user_sessiondata" ALTER COLUMN "info" TYPE jsonb USING "info"::text::jsonb'
         ),