By default, Ecto doesn't load any associations for us. If we retrieve an Owner schema, Ecto will tell you that the files field isn't loaded yet:
iex> owner = Repo.get!(Owner, "13KvtrMQ9uRB8MqkJpKSSQZxnBa")11:15:18.878 [debug] QUERY OK source="users" db=1.2ms decode=2.8msSELECT u0."id", u0."email" FROM "users" AS u0 WHERE (u0."id" = $1) ["13KvtrMQ9uRB8MqkJpKSSQZxnBa"]%ElixirDrip.Storage.Owner{ __meta__: #Ecto.Schema.Metadata<:loaded, "users">, email: "jose@hey.ho", files: #Ecto.Association.NotLoaded<association :files is not loaded>, id: "13KvtrMQ9uRB8MqkJpKSSQZxnBa"}
If you want to access their files, you need to explicitly call the Repo.preload/2 callback with the schema and the field to load:
iex> ...