Repository .create() with nested JSON, only one child goes through

Issue type:

[ ] question [x] bug report [ ] feature request [ ] documentation issue

TypeORM version:

[ ] latest [x] @next [x] 0.2.0-alpha.46

Steps to reproduce or a small repository showing the problem:

When trying to INSERT object with children via repository .create() then .save(), only the latest child is being inserted. The rest of the children get lost during .create().

Endpoint callback:

async create(role: CreateRoleWithLevelsDto): Promise<Role> {
    const newRole = this.roleRepository.create(role);
    return await this.roleRepository.save(newRole);
}

Entities:

@Entity()
export class Role {
  @PrimaryGeneratedColumn()
  id: number;

  @Column()
  name: string;

  @OneToMany(type => RoleLevel, roleLevel => roleLevel.role, { cascade: true, eager: true })
  roleLevels: RoleLevel[];
}

@Entity()
export class RoleLevel {

  @PrimaryGeneratedColumn()
  id: number;

  @Column()
  levelId: number;

  @Column({ nullable: true })
  gradingId: number;

  @Column({ nullable: true })
  name: string;

  @Column({ nullable: false })
  roleId: number;

  @ManyToOne(type => Role, role => role.roleLevels, { nullable: false, onDelete: 'CASCADE' })
  role: Role;
}

Data sent from frontend:

{ id: null,
  name: 'UI Designer',
  buildingBlock: null,
  jobCluster: null,
  roleLevels:
   [ { id: null,
       roleId: null,
       levelId: 2,
       gradingId: 3,
       name: 'Junior' },
     { id: null,
       roleId: null,
       levelId: 3,
       gradingId: 4,
       name: null },
     { id: null,
       roleId: null,
       levelId: 4,
       gradingId: 5,
       name: 'Senior' } ] }

What comes out of create, i.e. what is being saved into the database:

Role {
  id: null,
  name: 'UI Designer',
  buildingBlock: null,
  jobCluster: null,
  roleLevels:
   [ RoleLevel {
       id: null,
       levelId: 4,
       gradingId: 5,
       name: 'Senior',
       roleId: null } ] }

Many thanks for the great work and effort!

[pleerock]

I’ll need to research this question. Not sure about milestone yet

[abbbel2]

it’s been two years, any updates?