How do I define a relationship?
@Entity('favoritesable')
export class FavoritesEntity extends BaseEntity {
@PrimaryGeneratedColumn()
id: number;
@Column()
favoritesableId: number; // foreing key ( ads id, blog id, user id )
@Column()
favoritesableType: string; // ads, blog, user
@Column()
userId: number;
}
ads entity:
@Entity('ads')
export class AdsEntity extends BaseEntity {
@PrimaryGeneratedColumn()
id: number;
// How do I define a relationship to FavoritesEntity ?
}
data example for favoritesable table:
{id: 1, favoritesableId: 1, favoritesableType: "ads", userId: 1},
{id: 2, favoritesableId: 4, favoritesableType: "ads", userId: 1},
{id: 3, favoritesableId: 1, favoritesableType: "ads", userId: 2},
how to make this relation on ads entity and favorites Entity?
TypeORM's documentation pretty clearly shows ow to make a relationship between entities.
Example pulled from their docs:
import {Entity, PrimaryGeneratedColumn, Column, ManyToMany} from "typeorm";
import {Question} from "./Question";
@Entity()
export class Category {
@PrimaryGeneratedColumn()
id: number;
@Column()
name: string;
@ManyToMany(type => Question, question => question.categories)
questions: Question[];
}
import {Entity, PrimaryGeneratedColumn, Column, ManyToMany, JoinTable} from "typeorm";
import {Category} from "./Category";
@Entity()
export class Question {
@PrimaryGeneratedColumn()
id: number;
@Column()
title: string;
@Column()
text: string;
@ManyToMany(type => Category, category => category.questions)
@JoinTable()
categories: Category[];
}
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