import { Column , Entity , JoinColumn , ManyToOne , OneToMany , OneToOne , PrimaryGeneratedColumn , RelationId , } from "typeorm" ; import { Post } from "./post" ; import { Study } from "./study" ; import { ITopic } from "../../../../cshub-shared/src/entities/topic" ; import { Question } from "./practice/question" ; import { Exclude , Expose } from "class-transformer" ; @ Exclude ( ) @ Entity ( { name : "topics" , } ) export class Topic implements ITopic { @ Expose ( ) @ PrimaryGeneratedColumn ( ) id ! : number ; @ Expose ( ) @ Column ( { type : "text" , } ) name ! : string ; @ Expose ( ) @ ManyToOne ( ( type ) => Topic , ( topic ) => topic . children , { nullable : true , onDelete : "RESTRICT" , onUpdate : "RESTRICT" , } ) @ JoinColumn ( { name : "parentid" } ) parent ! : Topic | null ; @ Column ( { type : "int" , nullable : true } ) parentid ! : number | null ; @ Expose ( ) @ OneToMany ( ( type ) => Topic , ( topic ) => topic . parent ) children ! : Topic [ ] ; @ Expose ( ) @ Column ( { unique : true , } ) hash ! : number ; @ OneToOne ( ( type ) => Study , ( study ) => study . topTopic , { nullable : true , } ) study ? : Study ; @ OneToMany ( ( type ) => Post , ( post ) => post . topic ) posts ? : Post [ ] ; @ OneToMany ( ( type ) => Question , ( question ) => question . topic ) questions ? : Question [ ] ; }