fair-web/models/classify_to_problem.ts

import * as TypeORM from "typeorm";
import Model from "./common";

@TypeORM.Entity()
export default class ClassifyToProblem extends Model {
    static cache = true;

    @TypeORM.PrimaryGeneratedColumn()
    id: number;

    @TypeORM.Index()
    @TypeORM.Column({ nullable: true, type: "integer" })
    c_id: number;

    @TypeORM.Index()
    @TypeORM.Column({ nullable: true, type: "integer" })
    p_id: number;
}