Say I have the following schemas: defmodule Articles do schema "articles" do field(:name, :string) embeds_one(:foo, Foo) end def changeset(struct, attrs) do struct |> cast(attrs, [:name]) |> cast_embed(:foo) end end defmodule Foo do @primary_key false embedded_sch…

@LostKobrakai what about this? Support preloading associations in embedded schemas by sebastianseilund · Pull Request #3368 · elixir-ecto/ecto · GitHub

That’s interesting. The fact still stands though in that it’s not a foreign key association, which is what one usually understands here. However given this now exists. Are you on ecto 3.5?

Yes Ecto 3.5. Maybe I did something obviously wrong, Ecto is quite complex. But now I’m really stuck with these errors.

Great news! Associations work inside of embeds. You have a small typo. :country should be :countries. :slight_smile: I compiled it and it ran fine.

Preload associations in embeds?

Questions & Help Questions

LostKobrakai October 19, 2020, 1:01pm 2

You cannot have associations in embeds, as this is not something databases support.