View Source Cldr.Date (Cldr Dates & Times v2.16.0)

Provides localization and formatting of a Date struct or any map with the keys :year, :month, :day and :calendar.

Cldr.Date provides support for the built-in calendar Calendar.ISO or any calendars defined with ex_cldr_calendars

CLDR provides standard format strings for Date which are reresented by the styles :short, :medium, :long and :full. This allows for locale-independent formatting since each locale may define the underlying format string as appropriate.

Summary

Functions

to_string(date, backend \\ Cldr.Date.default_backend(), options \\ [])

Formats a date according to a format string as defined in CLDR and described in TR35

to_string!(date, backend \\ Cldr.Date.default_backend(), options \\ [])

Formats a date according to a format string as defined in CLDR and described in TR35

Functions

Link to this function

to_string(date, backend \\ Cldr.Date.default_backend(), options \\ [])

View Source 
@spec to_string(map(), Cldr.backend() | Keyword.t(), Keyword.t()) ::
  {:ok, String.t()} | {:error, {module(), String.t()}}

Formats a date according to a format string as defined in CLDR and described in TR35

Arguments

  • date is a %Date{} struct or any map that contains the keys year, month, day and calendar

  • backend is any module that includes use Cldr and therefore is a Cldr backend module. The default is Cldr.default_backend/0.

  • options is a keyword list of options for formatting. The valid options are:

Options

  • :format is on of :short, :medium, :long, :full or a format string. The default is :medium.

  • locale: any locale returned by Cldr.known_locale_names/1. The default is Cldr.get_locale/0.

  • :number_system a number system into which the formatted date digits should be transliterated.

Returns

  • {:ok, formatted_string} or

  • {:error, reason}

Examples 

iex> Cldr.Date.to_string ~D[2017-07-10], MyApp.Cldr, format: :medium, locale: "en"
{:ok, "Jul 10, 2017"}

iex> Cldr.Date.to_string ~D[2017-07-10], MyApp.Cldr, locale: "en"
{:ok, "Jul 10, 2017"}

iex> Cldr.Date.to_string ~D[2017-07-10], MyApp.Cldr, format: :full, locale: "en"
{:ok, "Monday, July 10, 2017"}

iex> Cldr.Date.to_string ~D[2017-07-10], MyApp.Cldr, format: :short, locale: "en"
{:ok, "7/10/17"}

iex> Cldr.Date.to_string ~D[2017-07-10], MyApp.Cldr, format: :short, locale: "fr"
{:ok, "10/07/2017"}

iex> Cldr.Date.to_string ~D[2017-07-10], MyApp.Cldr, style: :long, locale: "af"
{:ok, "10 Julie 2017"}
Link to this function

to_string!(date, backend \\ Cldr.Date.default_backend(), options \\ [])

View Source 
@spec to_string!(map(), Cldr.backend() | Keyword.t(), Keyword.t()) ::
  String.t() | no_return()

Formats a date according to a format string as defined in CLDR and described in TR35

Arguments

  • date is a %Date{} struct or any map that contains the keys year, month, day and calendar

  • backend is any module that includes use Cldr and therefore is a Cldr backend module. The default is Cldr.default_backend!/0.

  • options is a keyword list of options for formatting.

Options

  • format: :short | :medium | :long | :full or a format string. The default is :medium

  • locale is any valid locale name returned by Cldr.known_locale_names/0 or a Cldr.LanguageTag struct. The default is Cldr.get_locale/0

  • number_system: a number system into which the formatted date digits should be transliterated

Returns

  • formatted_date or

  • raises an exception.

Examples 

iex> Cldr.Date.to_string! ~D[2017-07-10], MyApp.Cldr, format: :medium, locale: "en"
"Jul 10, 2017"

iex> Cldr.Date.to_string! ~D[2017-07-10], MyApp.Cldr, locale: "en"
"Jul 10, 2017"

iex> Cldr.Date.to_string! ~D[2017-07-10], MyApp.Cldr, format: :full,locale: "en"
"Monday, July 10, 2017"

iex> Cldr.Date.to_string! ~D[2017-07-10], MyApp.Cldr, format: :short, locale: "en"
"7/10/17"

iex> Cldr.Date.to_string! ~D[2017-07-10], MyApp.Cldr, format: :short, locale: "fr"
"10/07/2017"

iex> Cldr.Date.to_string! ~D[2017-07-10], MyApp.Cldr, format: :long, locale: "af"
"10 Julie 2017"