Bonfire.Common.Localise.Cldr.DateTime.Interval (Bonfire v1.0.0-social-rc.3.22)

Interval formats allow for software to format intervals like "Jan 10-12, 2008" as a shorter and more natural format than "Jan 10, 2008 - Jan 12, 2008". They are designed to take a start and end date, time or datetime plus a formatting pattern and use that information to produce a localized format.

See Cldr.Interval.to_string/3 and Cldr.DateTime.Interval.to_string/3

Summary

Functions

do_to_string(from, to, options)

do_to_string!(from, to, options)

to_string(from, to, options \\ [])

Returns a string representing the formatted interval formed by two dates.

to_string!(from, to, options \\ [])

Returns a string representing the formatted interval formed by two dates or raises an exception.

Functions

do_to_string(from, to, options)

do_to_string!(from, to, options)

to_string(from, to, options \\ [])

@spec to_string(
  Calendar.naive_datetime() | nil,
  Calendar.naive_datetime() | nil,
  Keyword.t()
) ::
  {:ok, String.t()} | {:error, {module(), String.t()}}

Returns a string representing the formatted interval formed by two dates.

Arguments

from is any map that conforms to the Calendar.datetime type.
to is any map that conforms to the Calendar.datetime type. to must occur on or after from.
options is a keyword list of options. The default is [format: :medium].

Either from or to may also be nil, in which case an open interval is formatted and the non-nil item is formatted as a standalone datetime.

Options

:format is one of :short, :medium or :long or a specific format type or a string representing of an interval format. The default is :medium.
locale is any valid locale name returned by Cldr.known_locale_names/0 or a Cldr.LanguageTag.t/0 struct. The default is Elixir.Bonfire.Common.Localise.Cldr.get_locale/0
number_system: a number system into which the formatted date digits should be transliterated

Returns

{:ok, string} or
{:error, {exception, reason}}

Notes

CalendarInterval support requires adding the dependency calendar_interval to the deps configuration in mix.exs.
For more information on interval format string see the Cldr.Interval.
The available predefined formats that can be applied are the keys of the map returned by Cldr.DateTime.Format.interval_formats("en", :gregorian) where "en" can be replaced by any configuration locale name and :gregorian is the underlying CLDR calendar type.
In the case where from and to are equal, a single date is formatted instead of an interval

Examples

iex> Bonfire.Common.Localise.Cldr.DateTime.Interval.to_string ~U[2020-01-01 00:00:00.0Z],
...> ~U[2020-12-31 10:00:00.0Z]
{:ok, "Jan 1, 2020, 12:00:00 AM – Dec 31, 2020, 10:00:00 AM"}

iex> Bonfire.Common.Localise.Cldr.DateTime.Interval.to_string ~U[2020-01-01 00:00:00.0Z], nil
{:ok, "Jan 1, 2020, 12:00:00 AM –"}