idk what this is

src/app.module.ts

@@ -16,6 +16,7 @@ import { Message } from './games/entities/message.entity';
 import { LobbyModule } from './lobby/lobby.module';
 import { Concept } from './concept/entities/concept.entity';
 import { ConceptModule } from './concept/concept.module';
+import { ConceptType } from './concept/entities/concepttype.entity';
 
 const configService = new ConfigService();
 
@@ -40,6 +41,7 @@ const configService = new ConfigService();
         Game,
         Message,
         Concept,
+        ConceptType,
         ConceptInTurn,
         Topic,
         Word,

src/concept/entities/concept.entity.ts

@@ -1,4 +1,11 @@
-import { Column, Entity, PrimaryGeneratedColumn, Unique } from 'typeorm';
+import {
+  Column,
+  Entity,
+  ManyToOne,
+  PrimaryGeneratedColumn,
+  Unique,
+} from 'typeorm';
+import { ConceptType } from './concepttype.entity';
 
 @Entity()
 @Unique(['value'])
@@ -11,4 +18,11 @@ export class Concept {
 
   @Column({ default: false })
   enabled: boolean;
+
+  @ManyToOne(() => ConceptType, {
+    eager: true,
+    nullable: true,
+    onDelete: 'CASCADE',
+  })
+  type: ConceptType;
 }

src/concept/entities/concepttype.entity.ts

@@ -0,0 +1,24 @@
+import {
+  Column,
+  Entity,
+  OneToMany,
+  PrimaryGeneratedColumn,
+  Unique,
+} from 'typeorm';
+import { Concept } from './concept.entity';
+
+@Entity()
+@Unique(['value'])
+export class ConceptType {
+  @PrimaryGeneratedColumn()
+  id: number;
+
+  @Column()
+  value: string;
+
+  @OneToMany(() => Concept, (concept) => concept.type, {
+    lazy: true,
+    orphanedRowAction: 'delete',
+  })
+  concepts: Promise<Concept[]>;
+}