How to Get data in mutiple #ManyToMany in Nest.js - nestjs

Question

I have a ManyToMany relation between two entities and I don't know how can I Get data from the join table "device_users_user"
#Entity()
export class Device{
#PrimaryColumn()
Name:string;
#Column({ nullable: true})
Port:number;
#Column({ nullable: true})
IPadress:string;
#Column({ nullable: true})
Location:string;
#ManyToMany(type => User)
#JoinTable()
users: User[];
}
#Entity()
export class User{
#PrimaryColumn()
Id:number;
#Column({ nullable: true})
Departement:string;
#Column({ nullable: true})
FirstName:string;
#Column({ nullable: true})
LastName:string;
#Column({ nullable: true})
CardNumber:string;
#Column({ nullable: true})
MobilePhone:string;
}

Answer 1

You cannot query the join table directly, using the TypeORM API's (unless you try to do a raw query, but I assume this is not what you want to achieve... And I don't recommend it, as table names might be changed...).
However, as you declared the relation using #ManyToMany, you can load the users of your devices with a Query Builder, for instance:
const devicesWithUsers = await deviceRepository.createQueryBuilder('device')
.leftJoin('device.users', 'user')
.where(/* whatever you need */)
.getMany();
The documentation of TypeORM gives more examples, e.g.:
const user = await createQueryBuilder("user")
.leftJoinAndSelect("user.photos", "photo")
.where("user.name = :name", { name: "Timber" })
.getOne();
which could gives, as a result:
{
id: 1,
name: "Timber",
photos: [{
id: 1,
url: "me-with-chakram.jpg"
}, {
id: 2,
url: "me-with-trees.jpg"
}]
}