From 0843ab6a379b45a4f105cdf2670d144a97513b4a Mon Sep 17 00:00:00 2001
From: Thibaut Patel <thibaut@ghost.org>
Date: Mon, 1 Mar 2021 16:54:13 +0100
Subject: [PATCH] Added 'on delete cascade' to several foreign keys in sqlite

issue https://github.com/TryGhost/Team/issues/476
blocked by https://github.com/TryGhost/Ghost/pull/12702
---
 .../versions/4.0/26-add-cascade-on-delete.js  | 75 +++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 core/server/data/migrations/versions/4.0/26-add-cascade-on-delete.js

diff --git a/core/server/data/migrations/versions/4.0/26-add-cascade-on-delete.js b/core/server/data/migrations/versions/4.0/26-add-cascade-on-delete.js
new file mode 100644
index 0000000000..8ac72d21cb
--- /dev/null
+++ b/core/server/data/migrations/versions/4.0/26-add-cascade-on-delete.js
@@ -0,0 +1,75 @@
+const logging = require('../../../../../shared/logging');
+const {createIrreversibleMigration} = require('../../utils');
+const {addForeign, dropForeign} = require('../../../schema/commands');
+
+module.exports = createIrreversibleMigration(async (knex) => {
+    if (knex.client.config.client !== 'sqlite3') {
+        return logging.warn('Skipping adding "on delete cascade" - database is not SQLite3');
+    }
+
+    logging.info('Adding on delete cascade for members_labels, members_stripe_customers and members_stripe_customers_subscriptions');
+
+    await dropForeign({
+        fromTable: 'members_labels',
+        fromColumn: 'member_id',
+        toTable: 'members',
+        toColumn: 'id',
+        transaction: knex
+    });
+    await addForeign({
+        fromTable: 'members_labels',
+        fromColumn: 'member_id',
+        toTable: 'members',
+        toColumn: 'id',
+        cascade: true,
+        transaction: knex
+    });
+
+    await dropForeign({
+        fromTable: 'members_labels',
+        fromColumn: 'label_id',
+        toTable: 'labels',
+        toColumn: 'id',
+        transaction: knex
+    });
+    await addForeign({
+        fromTable: 'members_labels',
+        fromColumn: 'label_id',
+        toTable: 'labels',
+        toColumn: 'id',
+        cascade: true,
+        transaction: knex
+    });
+
+    await dropForeign({
+        fromTable: 'members_stripe_customers',
+        fromColumn: 'member_id',
+        toTable: 'members',
+        toColumn: 'id',
+        transaction: knex
+    });
+    await addForeign({
+        fromTable: 'members_stripe_customers',
+        fromColumn: 'member_id',
+        toTable: 'members',
+        toColumn: 'id',
+        cascade: true,
+        transaction: knex
+    });
+
+    await dropForeign({
+        fromTable: 'members_stripe_customers_subscriptions',
+        fromColumn: 'customer_id',
+        toTable: 'members_stripe_customers',
+        toColumn: 'id',
+        transaction: knex
+    });
+    await addForeign({
+        fromTable: 'members_stripe_customers_subscriptions',
+        fromColumn: 'customer_id',
+        toTable: 'members_stripe_customers',
+        toColumn: 'id',
+        cascade: true,
+        transaction: knex
+    });
+});