diff --git a/lib/inmana/restaurant.ex b/lib/inmana/restaurant.ex
index f0fa5db..59af4ae 100644
--- a/lib/inmana/restaurant.ex
+++ b/lib/inmana/restaurant.ex
@@ -4,6 +4,10 @@ defmodule Inmana.Restaurant do
 
     @primary_key {:id, :binary_id, autogenerate: true}
 
+    @required_params [:email, :name]
+
+    @derive {Jason.Encoder, only: @required_params ++ [:id]}
+
     schema "restaurants" do
         field :email, :string
         field :name, :string
@@ -13,8 +17,8 @@ defmodule Inmana.Restaurant do
 
     def changeset(params) do
         %__MODULE__{}
-        |> cast(params, [:email, :name])
-        |> validate_required([:email, :name])
+        |> cast(params, @required_params)
+        |> validate_required(@required_params)
         |> validate_length(:name, min: 2)
         |> validate_format(:email, ~r/@/)
         |> unique_constraint([:email])