Updated models and added post-save hook

migrations/0003_auto_20180301_1700.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.0.2 on 2018-03-01 17:00
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('assets', '0002_auto_20180301_1654'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='asset',
+            name='purchase_price',
+            field=models.IntegerField(blank=True, null=True),
+        ),
+    ]