adding source for charge

CHANGELOG.txt

@@ -1,6 +1,10 @@
 # Change Log
 All notable changes to this project will be documented in this file.
 
+## [0.2.9]
+### Added
+- added GenericForeignKey to StripeCharge as "source" field. Use https://docs.djangoproject.com/en/1.11/ref/contrib/contenttypes/#reverse-generic-relations for reverse lookup.
+
 ## [0.2.8]
 ### Changed
 - changed relation on stripe models from  to settings.STRIPE_USER_MODEL, which defaults to settings.AUTH_USER_MODEL. There are cases that CC is connected to, in example, office, not person.

aa_stripe/__init__.py

@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 __title__ = "Arabella Stripe"
-__version__ = "0.2.8"
+__version__ = "0.2.9"
 __author__ = "Jacek Ostanski"
 __license__ = "MIT"
 __copyright__ = "Copyright 2017 Arabella"

aa_stripe/migrations/0008_auto_20170630_0734.py

@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.2 on 2017-06-30 11:34
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contenttypes', '0002_remove_content_type_name'),
+        ('aa_stripe', '0007_auto_20170630_0557'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='stripecharge',
+            name='content_type',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='contenttypes.ContentType'),
+        ),
+        migrations.AddField(
+            model_name='stripecharge',
+            name='object_id',
+            field=models.PositiveIntegerField(db_index=True, null=True),
+        ),
+    ]

aa_stripe/models.py

@@ -4,6 +4,8 @@
 import simplejson as json
 import stripe
 from django.conf import settings
+from django.contrib.contenttypes import fields as generic
+from django.contrib.contenttypes.models import ContentType
 from django.core.validators import MaxValueValidator, MinValueValidator
 from django.db import models
 from django.utils import timezone
@@ -64,6 +66,9 @@ class StripeCharge(StripeBasicModel):
     stripe_charge_id = models.CharField(max_length=255, blank=True, db_index=True)
     description = models.CharField(max_length=255, help_text=_("Description sent to Stripe"))
     comment = models.CharField(max_length=255, help_text=_("Comment for internal information"))
+    content_type = models.ForeignKey(ContentType, null=True)
+    object_id = models.PositiveIntegerField(null=True, db_index=True)
+    source = generic.GenericForeignKey('content_type', 'object_id')
 
     def charge(self):
         if self.is_charged: