fix: make OrganisationSubscriptionInformationCache.allowed_projects nullable

api/organisations/migrations/0046_allow_allowed_projects_to_be_null.py

@@ -0,0 +1,47 @@
+# Generated by Django 3.2.20 on 2023-08-31 11:31
+from django.apps.registry import Apps
+from django.db import migrations, models
+from django.db.backends.base.schema import BaseDatabaseSchemaEditor
+
+
+def update_allowed_projects_for_all_paid_subscriptions(
+    apps: Apps, schema_editor: BaseDatabaseSchemaEditor
+) -> None:
+    organisation_subscription_information_cache_model = apps.get_model(
+        "organisations", "organisationsubscriptioninformationcache"
+    )
+    organisation_subscription_information_cache_model.objects.exclude(
+        organisation__subscription__plan="free"
+    ).update(allowed_projects=None)
+
+
+def reverse(apps: Apps, schema_editor: BaseDatabaseSchemaEditor) -> None:
+    """
+    Set the values for the OrganisationSubscriptionInformationCache objects back to 1 (which
+    is incorrect for paid subscriptions, but necessary to avoid IntegrityError when reversing
+    migrations)
+    """
+
+    organisation_subscription_information_cache_model = apps.get_model(
+        "organisations", "organisationsubscriptioninformationcache"
+    )
+    organisation_subscription_information_cache_model.objects.exclude(
+        organisation__subscription__plan="free"
+    ).update(allowed_projects=1)
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("organisations", "0045_auto_20230802_1956"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="organisationsubscriptioninformationcache",
+            name="allowed_projects",
+            field=models.IntegerField(default=1, blank=True, null=True),
+        ),
+        migrations.RunPython(
+            update_allowed_projects_for_all_paid_subscriptions, reverse_code=reverse
+        ),
+    ]

api/organisations/models.py

@@ -295,6 +295,6 @@ class OrganisationSubscriptionInformationCache(models.Model):
 
     allowed_seats = models.IntegerField(default=1)
     allowed_30d_api_calls = models.IntegerField(default=50000)
-    allowed_projects = models.IntegerField(default=1)
+    allowed_projects = models.IntegerField(default=1, blank=True, null=True)
 
     chargebee_email = models.EmailField(blank=True, max_length=254, null=True)

api/organisations/tests/test_views.py

@@ -1,6 +1,7 @@
 import json
 from datetime import datetime, timedelta
 from unittest import TestCase, mock
+from unittest.mock import MagicMock
 
 import pytest
 from django.conf import settings
@@ -582,6 +583,45 @@ def setUp(self) -> None:
         )
         self.subscription = Subscription.objects.get(organisation=self.organisation)
 
+    @mock.patch("organisations.views.extract_subscription_metadata")
+    def test_chargebee_webhook(
+        self, mock_extract_subscription_metadata: MagicMock
+    ) -> None:
+        # Given
+        seats = 3
+        api_calls = 100
+        mock_extract_subscription_metadata.return_value = ChargebeeObjMetadata(
+            seats=seats,
+            api_calls=api_calls,
+            projects=None,
+            chargebee_email=self.cb_user.email,
+        )
+        data = {
+            "content": {
+                "subscription": {
+                    "status": "active",
+                    "id": self.subscription_id,
+                },
+                "customer": {"email": self.cb_user.email},
+            }
+        }
+
+        # When
+        response = self.client.post(
+            self.url, data=json.dumps(data), content_type="application/json"
+        )
+
+        # Then
+        assert response.status_code == status.HTTP_200_OK
+
+        self.subscription.refresh_from_db()
+        subscription_cache = OrganisationSubscriptionInformationCache.objects.get(
+            organisation=self.subscription.organisation
+        )
+        assert subscription_cache.allowed_projects is None
+        assert subscription_cache.allowed_30d_api_calls == api_calls
+        assert subscription_cache.allowed_seats == seats
+
     @mock.patch("organisations.models.cancel_chargebee_subscription")
     def test_when_subscription_is_set_to_non_renewing_then_cancellation_date_set_and_alert_sent(
         self, mocked_cancel_chargebee_subscription