From a0d35acb49b0e0b2ce5d134ddb912daf9bd5c300 Mon Sep 17 00:00:00 2001
From: Todd Dembrey <todd.dembrey@torchbox.com>
Date: Tue, 12 Nov 2019 13:29:58 +0100
Subject: [PATCH] Add index on source_object_id for 10x performance improvment
on orderBy
---
.../migrations/0049_auto_20191112_1227.py | 18 ++++++++++++++++++
opentech/apply/activity/models.py | 2 +-
2 files changed, 19 insertions(+), 1 deletion(-)
create mode 100644 opentech/apply/activity/migrations/0049_auto_20191112_1227.py
diff --git a/opentech/apply/activity/migrations/0049_auto_20191112_1227.py b/opentech/apply/activity/migrations/0049_auto_20191112_1227.py
new file mode 100644
index 000000000..a79cea172
--- /dev/null
+++ b/opentech/apply/activity/migrations/0049_auto_20191112_1227.py
@@ -0,0 +1,18 @@
+# Generated by Django 2.1.11 on 2019-11-12 12:27
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+ dependencies = [
+ ('activity', '0048_add_project_transition'),
+ ]
+
+ operations = [
+ migrations.AlterField(
+ model_name='activity',
+ name='source_object_id',
+ field=models.PositiveIntegerField(blank=True, db_index=True, null=True),
+ ),
+ ]
diff --git a/opentech/apply/activity/models.py b/opentech/apply/activity/models.py
index 44cd95989..cf37ef0c2 100644
--- a/opentech/apply/activity/models.py
+++ b/opentech/apply/activity/models.py
@@ -90,7 +90,7 @@ class Activity(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.PROTECT)
source_content_type = models.ForeignKey(ContentType, blank=True, null=True, on_delete=models.CASCADE, related_name='activity_source')
- source_object_id = models.PositiveIntegerField(blank=True, null=True)
+ source_object_id = models.PositiveIntegerField(blank=True, null=True, db_index=True)
source = GenericForeignKey('source_content_type', 'source_object_id')
message = models.TextField()
--
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