Add an unknown payment type.

bikeshop_project/core/migrations/0018_auto_20160626_1844.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.4 on 2016-06-26 18:44
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0017_auto_20160626_1842'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='payment',
+            name='type',
+            field=models.CharField(choices=[('NONE', 'None'), ('CASH', 'Cash'), ('CHEQUE', 'Cheque'), ('VOLUNTEERING', 'Volunteering'), ('SQUARE', 'Square'), ('PAYPAL', 'PayPal'), ('UNKNOWN', 'Unknown')], default='NONE', max_length=12),
+        ),
+    ]

bikeshop_project/core/models.py

@@ -39,7 +39,8 @@ class Payment(models.Model):
         ('CHEQUE', 'Cheque'),
         ('VOLUNTEERING', 'Volunteering'),
         ('SQUARE', 'Square'),
-        ('PAYPAL', 'PayPal')
+        ('PAYPAL', 'PayPal'),
+        ('UNKNOWN', 'Unknown')
     )
     type = models.CharField(max_length=12, choices=payment_choices, default='NONE')
     created_at = models.DateTimeField(auto_now_add=True)