moderation_logテーブルのUserテーブルへのFK制約をon delete set null に変更する

packages/backend/migration/1712469608832-ModerationLogDoNotCascadeOnDelete.js

@@ -0,0 +1,20 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export class ModerationLogDoNotCascadeOnDelete1712469608832 {
+
+		name = 'ModerationLogDoNotCascadeOnDelete1712469608832'
+
+    async up(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "moderation_log" DROP CONSTRAINT "FK_a08ad074601d204e0f69da9a954"`)
+        await queryRunner.query(`ALTER TABLE "moderation_log" ADD CONSTRAINT "FK_a08ad074601d204e0f69da9a954" FOREIGN KEY ("userId") REFERENCES "user"("id") ON DELETE SET NULL ON UPDATE NO ACTION`);
+    }
+
+    async down(queryRunner) {
+			await queryRunner.query(`ALTER TABLE "moderation_log" DROP CONSTRAINT "FK_a08ad074601d204e0f69da9a954"`)
+			await queryRunner.query(`ALTER TABLE "moderation_log" ADD CONSTRAINT "FK_a08ad074601d204e0f69da9a954" FOREIGN KEY ("userId") REFERENCES "user"("id") ON DELETE CASCADE ON UPDATE NO ACTION`);
+    }
+
+}

packages/backend/src/models/ModerationLog.ts

@@ -17,7 +17,7 @@ export class MiModerationLog {
 	public userId: MiUser['id'];
 
 	@ManyToOne(type => MiUser, {
-		onDelete: 'CASCADE',
+		onDelete: 'SET NULL',
 	})
 	@JoinColumn()
 	public user: MiUser | null;