Using UUID as primary key in Phoenix (with PostgreSQL)

service.ex

defmodule YourApp.Service do
  use YourApp.Web, :model

  @primary_key {:id, :binary_id, autogenerate: true}

  schema "services" do
    field :name, :string
    field :description, :string

    timestamps
  end
  
  # ...
end

xxx_create_services.exs

defmodule YourApp.Repo.Migrations.CreateService do
  use Ecto.Migration

  def change do
    create table(:services, primary_key: false) do
      add :id, :uuid, primary_key: true
      add :name, :string
      add :description, :string

      timestamps
    end

  end
end