View Source Mobilizon.Cldr.Interval (Mobilizon v5.0.0-beta.1)

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.

The interval functions in this library will determine the calendar field with the greatest difference between the two datetimes before using the format pattern.

For example, the greatest difference in "Jan 10-12, 2008" is the day field, while the greatest difference in "Jan 10 - Feb 12, 2008" is the month field. This is used to pick the exact pattern to be used.

See Cldr.Interval for further detail.

Summary

Functions

to_string(interval, options)

Returns a Date.Range or CalendarInterval as a localised string.

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

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

to_string!(interval, options)

Returns a Date.Range or CalendarInterval as a localised string or raises an exception.

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

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

Functions

Link to this function

to_string(interval, options)

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

Returns a Date.Range or CalendarInterval as a localised string.

Arguments

  • range is either a Date.Range.t returned from Date.range/2 or a CalendarInterval.t

  • options is a keyword list of options. The default is [format: :medium, style: :date | :time | nil].

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.

  • :style supports dfferent formatting styles. The valid styles depends on whether formatting is for a date, time or datetime. Since the functions in this module will make a determination as to which formatter to be used based upon the data passed to them it is recommended the style option be omitted. If a style is important then call to_string/3 directly on Cldr.Date.Interval, Cldr.Time.Interval or Cldr.DateTime.Interval.

    • For a date the alternatives are :date, :month_and_day, :month and :year_and_month. The default is :date.

    • For a time the alternatives are :time, :zone and :flex. The default is :time

    • For a datetime there are no style options, the default for each of the date and time part is used

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

  • to_string/2 will decide which formatter to call based upon the arguments provided to it.

  • CalendarInterval support requires adding the dependency calendar_interval to the deps configuration in mix.exs.

  • For more information on interval format string see 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, time or datetime is formatted instead of an interval

Examples 

iex> use CalendarInterval
iex> Mobilizon.Cldr.Interval.to_string ~I"2020-01-01/12",
...> format: :long
{:ok, "Wed, Jan 1 – Sun, Jan 12, 2020"}

iex> Mobilizon.Cldr.Interval.to_string Date.range(~D[2020-01-01], ~D[2020-12-31]),
...> format: :long
{:ok, "Wed, Jan 1 – Thu, Dec 31, 2020"}
Link to this function

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

View Source 
@spec to_string(Cldr.Interval.datetime(), Cldr.Interval.datetime(), 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 any one of the Calendar types.

  • to is any map that conforms to the any one of the Calendar types. to must occur on or after from.

  • options is a keyword list of options. The default is [format: :medium, style: :date | :time | nil].

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.

  • :style supports dfferent formatting styles. The valid styles depends on whether formatting is for a date, time or datetime. Since the functions in this module will make a determination as to which formatter to be used based upon the data passed to them it is recommended the style option be omitted. If styling is important then call to_string/3 directly on Cldr.Date.Interval, Cldr.Time.Interval or Cldr.DateTime.Interval.

    • For a date the alternatives are :date, :month_and_day, :month and :year_and_month. The default is :date.

    • For a time the alternatives are :time, :zone and :flex. The default is :time

    • For a datetime there are no style options, the default for each of the date and time part is used

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

  • to_string/2 will decide which formatter to call based upon the arguments provided to it.

  • CalendarInterval support requires adding the dependency calendar_interval to the deps configuration in mix.exs.

  • For more information on interval format string see 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, time or datetime is formatted instead of an interval.

Examples 

iex> Mobilizon.Cldr.Interval.to_string ~D[2020-01-01], ~D[2020-12-31]
{:ok, "Jan 1 – Dec 31, 2020"}

iex> Mobilizon.Cldr.Interval.to_string ~D[2020-01-01], ~D[2020-01-12]
{:ok, "Jan 1 – 12, 2020"}

iex> Mobilizon.Cldr.Interval.to_string ~D[2020-01-01], ~D[2020-01-12],
...> format: :long
{:ok, "Wed, Jan 1 – Sun, Jan 12, 2020"}

iex> Mobilizon.Cldr.Interval.to_string ~D[2020-01-01], ~D[2020-12-01],
...> format: :long, style: :year_and_month
{:ok, "January – December 2020"}

iex> use CalendarInterval
iex> Mobilizon.Cldr.Interval.to_string ~I"2020-01-01/12",
...> format: :long
{:ok, "Wed, Jan 1 – Sun, Jan 12, 2020"}

iex> Mobilizon.Cldr.Interval.to_string ~U[2020-01-01 00:00:00.0Z], ~U[2020-12-01 10:05:00.0Z],
...> format: :long
{:ok, "January 1, 2020, 12:00:00 AM UTC – December 1, 2020, 10:05:00 AM UTC"}

iex> Mobilizon.Cldr.Interval.to_string ~U[2020-01-01 00:00:00.0Z], ~U[2020-01-01 10:05:00.0Z],
...> format: :long
{:ok, "January 1, 2020, 12:00:00 AM UTC – 10:05:00 AM UTC"}
Link to this function

to_string!(interval, options)

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

Returns a Date.Range or CalendarInterval as a localised string or raises an exception.

Arguments

  • range is either a Date.Range.t returned from Date.range/2 or a CalendarInterval.t

  • options is a keyword list of options. The default is [format: :medium, style: :date | :time | nil].

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.

  • :style supports dfferent formatting styles. The valid styles depends on whether formatting is for a date, time or datetime. Since the functions in this module will make a determination as to which formatter to be used based upon the data passed to them it is recommended the style option be omitted. If a style is important then call to_string/3 directly on Cldr.Date.Interval, Cldr.Time.Interval or Cldr.DateTime.Interval.

    • For a date the alternatives are :date, :month_and_day, :month and :year_and_month. The default is :date.

    • For a time the alternatives are :time, :zone and :flex. The default is :time.

    • For a datetime there are no style options, the default for each of the date and time part is used.

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

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

Returns

  • string or

  • raises an exception

Notes

  • to_string/3 will decide which formatter to call based upon the arguments provided to it.

  • CalendarInterval support requires adding the dependency calendar_interval to the deps configuration in mix.exs.

  • For more information on interval format string see 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, time or datetime is formatted instead of an interval

Examples 

iex> use CalendarInterval
iex> Mobilizon.Cldr.Interval.to_string! ~I"2020-01-01/12",
...> format: :long
"Wed, Jan 1 – Sun, Jan 12, 2020"

iex> Mobilizon.Cldr.Interval.to_string! Date.range(~D[2020-01-01], ~D[2020-12-31]),
...> format: :long
"Wed, Jan 1 – Thu, Dec 31, 2020"
Link to this function

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

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

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

Arguments

  • from is any map that conforms to the any one of the Calendar types.

  • to is any map that conforms to the any one of the Calendar types. to must occur on or after from.

  • options is a keyword list of options. The default is [format: :medium, style: :date | :time | nil].

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.

  • :style supports dfferent formatting styles. The valid styles depends on whether formatting is for a date, time or datetime. Since the functions in this module will make a determination as to which formatter to be used based upon the data passed to them it is recommended the style option be omitted. If styling is important then call to_string/3 directly on Cldr.Date.Interval, Cldr.Time.Interval or Cldr.DateTime.Interval.

    • For a date the alternatives are :date, :month_and_day, :month and :year_and_month. The default is :date.

    • For a time the alternatives are :time, :zone and :flex. The default is :time.

    • For a datetime there are no style options, the default for each of the date and time part is used.

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

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

Returns

  • string or

  • raises and exception

Notes

  • to_string/3 will decide which formatter to call based upon the arguments provided to it.

  • CalendarInterval support requires adding the dependency calendar_interval to the deps configuration in mix.exs.

  • For more information on interval format string see 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, time or datetime is formatted instead of an interval.

Examples 

iex> Mobilizon.Cldr.Interval.to_string! ~D[2020-01-01], ~D[2020-12-31]
"Jan 1 – Dec 31, 2020"

iex> Mobilizon.Cldr.Interval.to_string! ~D[2020-01-01], ~D[2020-01-12]
"Jan 1 – 12, 2020"

iex> Mobilizon.Cldr.Interval.to_string! ~D[2020-01-01], ~D[2020-01-12],
...> format: :long
"Wed, Jan 1 – Sun, Jan 12, 2020"

iex> Mobilizon.Cldr.Interval.to_string! ~D[2020-01-01], ~D[2020-12-01],
...> format: :long, style: :year_and_month
"January – December 2020"

iex> use CalendarInterval
iex> Mobilizon.Cldr.Interval.to_string! ~I"2020-01-01/12",
...> format: :long
"Wed, Jan 1 – Sun, Jan 12, 2020"

iex> Mobilizon.Cldr.Interval.to_string! ~U[2020-01-01 00:00:00.0Z], ~U[2020-12-01 10:05:00.0Z],
...> format: :long
"January 1, 2020, 12:00:00 AM UTC – December 1, 2020, 10:05:00 AM UTC"

iex> Mobilizon.Cldr.Interval.to_string! ~U[2020-01-01 00:00:00.0Z], ~U[2020-01-01 10:05:00.0Z],
...> format: :long
"January 1, 2020, 12:00:00 AM UTC – 10:05:00 AM UTC"