Phoenix View Helpers for select boxes

view_helpers.ex

defmodule Clockout.MyViewHelpers do

  def display_name(:client, id) do
    Clockout.Client |> display_name_by_id(id)
  end

  def display_name(:person, id) do
    Clockout.Person |> display_name_by_id(id)
  end

  def display_name(:project, id) do
    Clockout.Project |> display_name_by_id(id)
  end

  def display_name_by_id(entity, id) do
    entity
    |> Clockout.Repo.get!(id)
    |> display_name
  end

  def display_name(%Clockout.Client{name: name, code: code}) do
    "#{name} (#{code})"
  end

  def display_name(%Clockout.Person{first: first, last: last}) do
    "#{first} #{last}"
  end

  def display_name(%Clockout.Project{name: name, code: code}) do
    "#{name} (#{code})"
  end

  def dropdown_with_id(client = %{id: id}) do
    {display_name(client), id}
  end

  def select_options(entities) do
    entities |> Enum.map(&dropdown_with_id/1)
  end

end