defmodule Rsh26pool.Voting.Idea do
  @moduledoc """
  A voting option. In normal mode it is an idea posted by a participant; in
  grouping mode it is the participant's opinion (one per participant).
  """
  use Ecto.Schema
  import Ecto.Changeset

  alias Rsh26pool.Voting.{Participant, Room, Vote}

  schema "ideas" do
    field :text, :string

    belongs_to :room, Room
    belongs_to :participant, Participant
    has_many :votes, Vote

    timestamps(type: :utc_datetime)
  end

  def changeset(idea, attrs) do
    idea
    |> cast(attrs, [:text])
    |> validate_required([:text], message: "内容を入力してください")
    |> validate_length(:text, max: 200, message: "200文字以内で入力してください")
  end
end