oneshot

lib/rsh26pool/voting/participant.ex

@@ -0,0 +1,37 @@
+defmodule Rsh26pool.Voting.Participant do
+  @moduledoc """
+  A user taking part in a room. Identified across requests by a random `token`
+  stored in the session cookie. Owners have `role == "owner"`.
+  """
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  alias Rsh26pool.Voting.Room
+
+  schema "participants" do
+    field :token, :string
+    field :name, :string
+    field :role, :string, default: "member"
+
+    # Grouping-mode results, filled in when voting closes.
+    field :is_leader, :boolean, default: false
+
+    belongs_to :room, Room
+    belongs_to :assigned_leader, __MODULE__, foreign_key: :assigned_leader_id
+
+    timestamps(type: :utc_datetime)
+  end
+
+  @doc "Changeset for the user-supplied fields (their display name)."
+  def changeset(participant, attrs) do
+    participant
+    |> cast(attrs, [:name])
+    |> validate_required([:name], message: "名前を入力してください")
+    |> validate_length(:name, max: 40, message: "名前は40文字以内で入力してください")
+    |> unique_constraint(:token)
+  end
+
+  @doc "Owner? convenience predicate."
+  def owner?(%__MODULE__{role: "owner"}), do: true
+  def owner?(%__MODULE__{}), do: false
+end