Upsert implementation

Is your feature request related to a problem? Please describe. A clarification on a possible feature

I’m going to create a CustomBaseRepository to implement a generic method to find or create (upsert). Can you point me to some example on how to create such a base repository? The documentation (https://mikro-orm.io/docs/repositories#custom-repository) si not very exhaustive and the links provided have no example for a custom base repository.

Alternatively, does such method exist already?

[B4nan]

Its pretty simple, all what repository does is that it forwards calls to the entity manager with the entity name stored in this.entityName. But you can use the repository methods directly so it will be handled for you:

async upsert(data, where) {
  let e = await this.findOne(where);

  if (e) {
    wrap(e).assign(data);
  } else {
    e = this.create(data);
  }

  await this.persistAndFlush(e); // or maybe you do not want to flush here, depends on the use case

  return e;
}

[B4nan]

Just create a generic class extending EntityRepository and pass it in the ORM config via MikroORM.init({ entityRepository: CustomBaseRepository }).

Something like this should work:

export class CustomBaseRepository<T extends AnyEntity<T>> extends EntityRepository<T> {
  upsert() { ... }
}

Alternatively, does such method exist already?

Nope.

Not sure if I understood well, do you also need help with implementation of the upsert method? Should be quite trivial.