add created_at and updated_at fields

evolus/migrations/0008_auto_20171026_1555.py

@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.5 on 2017-10-26 13:55
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('evolus', '0007_keyword_parent'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='keyword',
+            name='created_at',
+            field=models.DateTimeField(auto_now_add=True, default=django.utils.timezone.now),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name='keyword',
+            name='updated_at',
+            field=models.DateTimeField(auto_now=True),
+        ),
+    ]

evolus/models.py

@@ -95,7 +95,9 @@ class Keyword(ClosureModel):
     name = models.CharField(max_length=255)
     parent = models.ForeignKey('self', null=True, blank=True)
     selectable = models.BooleanField(default=True)
-    
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
     def __str__(self):
         return self.name