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lib/absinthe/type/custom.ex
defmodule Absinthe.Type.Custom do
use Absinthe.Schema.Notation
@moduledoc """
This module contains additional data types.
To use: `import_types Absinthe.Type.Custom`.
"""
scalar :datetime, name: "DateTime" do
description """
The `DateTime` scalar type represents a date and time in the UTC
timezone. The DateTime appears in a JSON response as an ISO8601 formatted
string, including UTC timezone ("Z"). The parsed date and time string will
be converted to UTC and any UTC offset other than 0 will be rejected.
"""
serialize &DateTime.to_iso8601/1
parse &parse_datetime/1
end
scalar :naive_datetime, name: "NaiveDateTime" do
description """
The `Naive DateTime` scalar type represents a naive date and time without
timezone. The DateTime appears in a JSON response as an ISO8601 formatted
string.
"""
serialize &NaiveDateTime.to_iso8601/1
parse &parse_naive_datetime/1
end
scalar :date do
description """
The `Date` scalar type represents a date. The Date appears in a JSON
response as an ISO8601 formatted string.
"""
serialize &Date.to_iso8601/1
parse &parse_date/1
end
scalar :time do
description """
The `Time` scalar type represents a time. The Time appears in a JSON
response as an ISO8601 formatted string.
"""
serialize &Time.to_iso8601/1
parse &parse_time/1
end
@spec parse_datetime(Absinthe.Blueprint.Input.String.t) :: {:ok, DateTime.t} | :error
defp parse_datetime(%Absinthe.Blueprint.Input.String{value: value}) do
case DateTime.from_iso8601(value) do
{:ok, datetime, 0} -> {:ok, datetime}
{:ok, _datetime, _offset} -> :error
_error -> :error
end
end
defp parse_datetime(_) do
:error
end
@spec parse_naive_datetime(Absinthe.Blueprint.Input.String.t) :: {:ok, NaiveDateTime.t} | :error
defp parse_naive_datetime(%Absinthe.Blueprint.Input.String{value: value}) do
case NaiveDateTime.from_iso8601(value) do
{:ok, naive_datetime} -> {:ok, naive_datetime}
_error -> :error
end
end
defp parse_naive_datetime(_) do
:error
end
@spec parse_date(Absinthe.Blueprint.Input.String.t) :: {:ok, Date.t} | :error
defp parse_date(%Absinthe.Blueprint.Input.String{value: value}) do
case Date.from_iso8601(value) do
{:ok, date} -> {:ok, date}
_error -> :error
end
end
defp parse_date(_) do
:error
end
@spec parse_time(Absinthe.Blueprint.Input.String.t) :: {:ok, Time.t} | :error
defp parse_time(%Absinthe.Blueprint.Input.String{value: value}) do
case Time.from_iso8601(value) do
{:ok, time} -> {:ok, time}
_error -> :error
end
end
defp parse_time(_) do
:error
end
end