populate against existing entities

When writing business logic that is something like:

processChildren(children: Child[]): Promise<void> {
  await Promise.all(children.map(async child => {
    const parent = await child.parent.load()
  });
});

I’ve got an N+1 loading the parent for each child. I’d like to do something like populate: { parent } but that only works if I’m the one who loaded the children / i.e. called find.

Would it be easy/possible to add a populate method directly to EntityManager, i.e.:

em.populate(children, ["parent"]);

?

Or is there an existing/better way to do this that I’m missing?

Thanks!

[B4nan]

I don’t want to change the EntityLoader signature now (BC), but we can add that new method to EM that would work like this.

[stephenh]

This is great, thanks @B4nan !