Image upload using Arc and nested form

[kokolegorille]

Whenever You fail to create, or update, You rerender new.html, or update.html, but You don’t pass categories. So the template is not happy…

Like here… no categories are passed to the template. That’s why You have this error.

@Kapeusz

          {:error, %Ecto.Changeset{} = changeset} ->
            render(conn, "new.html", changeset: changeset)