Link HostingBillLineItem to StripePlan

hosting/migrations/0053_hostingbilllineitem_stripe_plan.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.4 on 2019-04-20 10:10
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('datacenterlight', '0028_stripeplan_stripe_plan_name'),
+        ('hosting', '0052_hostingbilllineitem'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='hostingbilllineitem',
+            name='stripe_plan',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='datacenterlight.StripePlan'),
+        ),
+    ]

hosting/models.py

@@ -10,7 +10,7 @@ from django.db import models
 from django.utils import timezone
 from django.utils.functional import cached_property
 
-from datacenterlight.models import VMPricing, VMTemplate
+from datacenterlight.models import VMPricing, VMTemplate, StripePlan
 from membership.models import StripeCustomer, CustomUser
 from utils.mixins import AssignPermissionsMixin
 from utils.models import BillingAddress
@@ -431,7 +431,10 @@ class HostingBillLineItem(AssignPermissionsMixin, models.Model):
     """
     Corresponds to InvoiceItem object of Stripe
     """
-    monthly_hosting_bill = models.ForeignKey(MonthlyHostingBill)
+    monthly_hosting_bill = models.ForeignKey(MonthlyHostingBill,
+                                             on_delete=models.CASCADE)
+    stripe_plan = models.ForeignKey(StripePlan, null=True,
+                                    on_delete=models.CASCADE)
     amount = models.PositiveSmallIntegerField()
     description = models.CharField(max_length=255)
     discountable = models.BooleanField()