Composite Id

[strigefleur]

What's the way of using complex Ids with repo?
I know I could just build some string prop using all required props but are there any special ways with Elf?

[NetanelBasal]

What do you mean by "complex ids"?

[strigefleur]

As per recommendations I'd normalize data before sending to web-app so it's quite possible to have some models like

interface MyEntityModel {
  entityIdA: number;
  entityIdB: number;
  somethingElse: string;
}

where entityIdA + entityIdB is a composite primary key of MyEntity.

[NetanelBasal]

Working with entities requires an ID. In your case, create it when you add the entity to the store:

addEntities(todos) {
 const withIds = todos.map(todo => ({
   ...todo,
   id: todo.foo + todo.bar
 }))

 store.update(addEntities(withIds));
}

Then you use it as normal.