Specify type of ids in a repository with multiple ids

[frbuceta]

Having two properties of type PK/id is not supported by the DefaultCrudRepository.

The specification of DefaultCrudRepository is:

export class DefaultCrudRepository<
  T extends Entity,
  ID,
  Relations extends object = {}
> implements EntityCrudRepository<T, ID, Relations> {
  ...
}

So the problem is that I can only specify the type of a single id and not of both as you can see in the example below.

Example Code:

@model()
class UserHasPermission extends Entity {
  @property({id: true})
  userId: number;
  @property({id: true})
  permissionId: number;

  constructor(data: Partial<UserHasPermission>) {
    super(data);
  }
}

class UserHasPermissionRepository extends DefaultCrudRepository<
  UserHasPermission,
  typeof UserHasPermission.prototype.id         <<<<<----------- Here
> {
  constructor(dataSource: juggler.DataSource) {
    super(UserHasPermission, dataSource);
  }
}

Any solution?

Additional information

Node: darwin x64 14.10.1

I have this in the loopback repository, in a test for a HasAndBelongsToMany relation

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[raymondfeng]

In this case, we should have the following id type:

type UserHasPermissionPK = Pick<UserHasPermission, 'userId' | 'permissionId>

But I don't think LoopBack 4 supports composite ids at runtime.

[achrinza]

Would this be a duplicate of #1830?

[frbuceta]

Would this be a duplicate of #1830?

Yes, I am going to close this issue and we move to that one