Add index for created_at field

diff --git a/tweet/migrations/0010_auto_20160220_2130.py b/tweet/migrations/0010_auto_20160220_2130.py
new file mode 100644 (file)
index 0000000..e8518e5
--- /dev/null
+++ b/tweet/migrations/0010_auto_20160220_2130.py
@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.2 on 2016-02-20 20:30
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('tweet', '0009_tweet_address'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='tweet',
+            name='created_at',
+            field=models.DateTimeField(db_index=True, default=django.utils.timezone.now, verbose_name='date and time'),
+        ),
+    ]

diff --git a/tweet/models.py b/tweet/models.py
index 3133409edf964c4ed92d924bd6bc6225cad316a2..53df4e067002e89276e538bd8d42eb1b2f5c78c5 100644 (file)
--- a/tweet/models.py
+++ b/tweet/models.py
@@ -46,7 +46,7 @@ class Settings(models.Model):
 
 class Tweet(models.Model):
     id = models.BigIntegerField('id', primary_key=True)
-    created_at = models.DateTimeField('date and time', default=timezone.now)
+    created_at = models.DateTimeField('date and time', default=timezone.now, db_index=True)
     from_user = models.CharField('sender screen name', max_length=20)
     from_user_id = models.BigIntegerField('sender user id')
     in_reply_to = models.CharField('in reply to screen name', max_length=20, blank=True)