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lib/types/date.ex
defmodule Timex.Ecto.Date do
@moduledoc """
Support for using Timex with :date fields
"""
use Timex
@behaviour Ecto.Type
def type, do: :date
@doc """
We can let Ecto handle blank input
"""
defdelegate blank?(value), to: Ecto.Type
@doc """
Handle casting to Timex.Ecto.Date
"""
def cast(input) when is_binary(input) do
case DateFormat.parse(input, "{ISOdate}") do
{:ok, datetime} -> {:ok, datetime}
{:error, _} -> :error
end
end
def cast(%DateTime{timezone: nil} = datetime), do: {:ok, %{datetime | :timezone => %TimezoneInfo{}}}
def cast(%DateTime{} = datetime), do: {:ok, datetime}
def cast(_), do: :error
@doc """
Load from the native Ecto representation
"""
def load({_year, _month, _day} = date), do: {:ok, Date.from(date)}
def load(_), do: :error
@doc """
Convert to native Ecto representation
"""
def dump(%DateTime{} = datetime) do
{{year, month, day}, _} = datetime |> Timezone.convert("UTC") |> DateConvert.to_erlang_datetime
{:ok, {year, month, day}}
end
def dump(_), do: :error
end