From 1c511b738571b38125679211cdc208dec82430c9 Mon Sep 17 00:00:00 2001
From: sezanzeb <28510156+sezanzeb@users.noreply.github.com>
Date: Thu, 16 Apr 2026 00:38:30 +0200
Subject: [PATCH 1/2] add onDelete to entities

---
 backend/src/entities/answer.ts | 4 ++--
 backend/src/entities/rating.ts | 6 +++---
 backend/src/entities/team.ts   | 2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/backend/src/entities/answer.ts b/backend/src/entities/answer.ts
index 87c39ec2..bbc7de15 100644
--- a/backend/src/entities/answer.ts
+++ b/backend/src/entities/answer.ts
@@ -6,9 +6,9 @@ import { User } from "./user";
 export class Answer {
   @PrimaryGeneratedColumn()
   public readonly id!: number;
-  @ManyToOne(() => User, { eager: true })
+  @ManyToOne(() => User, { eager: true, onDelete: "CASCADE" })
   public user!: User;
-  @ManyToOne(() => Question, { eager: true })
+  @ManyToOne(() => Question, { eager: true, onDelete: "CASCADE" })
   public question!: Question;
   @Column({ length: 1024 })
   public value!: string;
diff --git a/backend/src/entities/rating.ts b/backend/src/entities/rating.ts
index a6515d2b..f5c56b30 100644
--- a/backend/src/entities/rating.ts
+++ b/backend/src/entities/rating.ts
@@ -14,11 +14,11 @@ import { User } from "./user";
 export class Rating {
   @PrimaryGeneratedColumn()
   public readonly id!: number;
-  @ManyToOne(() => User, { eager: true })
+  @ManyToOne(() => User, { eager: true, onDelete: "CASCADE" })
   public user!: User;
-  @ManyToOne(() => Project, { eager: true })
+  @ManyToOne(() => Project, { eager: true, onDelete: "CASCADE" })
   public project!: Project;
-  @ManyToOne(() => Criterion, { eager: true })
+  @ManyToOne(() => Criterion, { eager: true, onDelete: "CASCADE" })
   public criterion!: Criterion;
   @Column()
   // 1 - 5
diff --git a/backend/src/entities/team.ts b/backend/src/entities/team.ts
index d2e0fcda..ff4228c2 100644
--- a/backend/src/entities/team.ts
+++ b/backend/src/entities/team.ts
@@ -24,7 +24,7 @@ export class Team {
   // Beware that this is not eagerly loaded, because it will throw recursion depth
   // errors due to user.team being eagerly loaded already. Add it to "relations"
   // when doing database queries instead.
-  @OneToOne(() => User)
+  @OneToOne(() => User, { onDelete: "SET NULL" })
   @JoinColumn()
   public owner!: User;
   @OneToMany(() => User, (user) => user.teamRequest)

From d8424599e4fbf18fb231a526c0e349034025f896 Mon Sep 17 00:00:00 2001
From: sezanzeb <28510156+sezanzeb@users.noreply.github.com>
Date: Thu, 16 Apr 2026 00:42:33 +0200
Subject: [PATCH 2/2] keep rating if user is deleted

---
 backend/src/entities/rating.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backend/src/entities/rating.ts b/backend/src/entities/rating.ts
index f5c56b30..355db666 100644
--- a/backend/src/entities/rating.ts
+++ b/backend/src/entities/rating.ts
@@ -14,7 +14,7 @@ import { User } from "./user";
 export class Rating {
   @PrimaryGeneratedColumn()
   public readonly id!: number;
-  @ManyToOne(() => User, { eager: true, onDelete: "CASCADE" })
+  @ManyToOne(() => User, { eager: true, onDelete: "SET NULL" })
   public user!: User;
   @ManyToOne(() => Project, { eager: true, onDelete: "CASCADE" })
   public project!: Project;