backend/src/entities/user-star.entity.ts

import {
  Entity,
  PrimaryGeneratedColumn,
  CreateDateColumn,
  ManyToOne,
  JoinColumn,
  Column,
} from 'typeorm';
import { User } from './user.entity';
import { Course } from './course.entity';

@Entity('user_stars')
export class UserStar {
  @PrimaryGeneratedColumn()
  id: number;

  @Column({ name: 'user_id' })
  userId: number;

  @Column({ name: 'course_id' })
  courseId: number;

  @ManyToOne(() => User)
  @JoinColumn({ name: 'user_id' })
  user: User;

  @ManyToOne(() => Course)
  @JoinColumn({ name: 'course_id' })
  course: Course;

  @CreateDateColumn({ name: 'created_at' })
  createdAt: Date;
}