Add delete flag to IndexUpdate to offload deleting as well

Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/trans/management/commands/update_index.py

@@ -47,7 +47,7 @@ class Command(BaseCommand):
 
         # Grab all updates from the database
         with transaction.atomic():
-            updates = IndexUpdate.objects.all()
+            updates = IndexUpdate.objects.filter(to_delete=False)
             for update in updates[:options['limit']].iterator():
                 indexupdates.add(update.pk)
                 unit_ids.add(update.unit_id)

weblate/trans/migrations/0053_auto_20160202_1145.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.1 on 2016-02-02 11:45
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('trans', '0052_install_group_acl'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='indexupdate',
+            name='to_delete',
+            field=models.BooleanField(default=False),
+        ),
+    ]

weblate/trans/models/search.py

@@ -26,6 +26,7 @@ from django.utils.encoding import force_text, python_2_unicode_compatible
 class IndexUpdate(models.Model):
     unit = models.OneToOneField('Unit')
     source = models.BooleanField(default=True)
+    to_delete = models.BooleanField(default=False)
 
     class Meta(object):
         app_label = 'trans'