I’m following your guide, which is great - thanks, but am left wondering how you might handle adding multiple records vs a single call to the Relationship changeset.

I would use Ecto.Multi, something like:

Ecto.Multi.new()
|> Ecto.Multi.insert(table_name, changeset(struct, attrs))
|> Repo.trasaction()

# So, with the 'relationship' naming:
Ecto.Multi.new()
|> Ecto.Multi.insert(
  :relationships,
  Relationship.changeset(%Relationship{}, attrs)
)
|> Repo.transaction()

If I’m not mistaken, what’s great about it is that you don’t really have to do anything tricky. I haven’t tested this but I think this is a good guide on Ecto.Multi from Elixir School.

** Forgot to include Repo.transaction()