Use signals to save ip, user_agent, last_login in sessions

account/migrations/0006_user_session_keys.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.4 on 2017-09-16 06:22
+from __future__ import unicode_literals
+
+from django.db import migrations
+import jsonfield.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('account', '0005_auto_20170830_1154'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='session_keys',
+            field=jsonfield.fields.JSONField(default=[]),
+        ),
+    ]