Computed virtual fields

[Elias Arruda]

It would be cool if we could compute virtual fields somehow

something like:

schema "user" do

  field :name, :string

  field :last_name, :string

  field :full_name, :string, virtual: true, compute: &full_name/1

end

defp full_name(user), do: user.name <> user.last_name

What are the implications on doing something like that?