concept Timex in category elixir

This is an excerpt from Manning's book Phoenix in Action. Login to get full access to this book.

Formatting a date and time with the Timex library

You’ll use Timex in your application. Add timex as a dependency for auction_web (if you’ve forgotten how, check out chapter 5; you can specify {:timex, "> 0.0.0"} to grab the most recent version). Then, run mix deps.get, and restart your application. It will now be available to use.

I won’t go too much into using the module—you can read the documentation if you’d like deeper insight into the workings of Timex. You’ll use it in the AuctionWeb.GlobalHelpers module, and use Timex.format!/2 in a function there.

Listing 11.28. Creating formatted_datetime as a global helper

defmodule AuctionWeb.GlobalHelpers do
  use Timex

  def integer_to_currency(amount) do
    dollars_and_cents =
      amount
      |> Decimal.div(100)
      |> Decimal.round(2)
    "$#{dollars_and_cents}"
  end

  def formatted_datetime(datetime) do
    datetime
    |> Timex.format!("{YYYY}-{0M}-{0D} {h12}:{m}:{s}{am}")      #1
  end
end

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