JSON::ArrayConverter(Converter) - Crystal 1.20.1

# module JSON::ArrayConverter(Converter)

##
Overview

Converter to be used with `JSON::Serializable` to serialize the elements of an `Array(T)` with the custom converter.

    require "json"

    class TimestampArray
      include JSON::Serializable

      @[JSON::Field(converter: JSON::ArrayConverter(Time::EpochConverter))]
      property dates : Array(Time)
    end

    timestamp = TimestampArray.from_json(%({"dates":[1459859781,1567628762]}))
    timestamp.dates   # => [2016-04-05 12:36:21Z, 2019-09-04 20:26:02Z]
    timestamp.to_json # => %({"dates":[1459859781,1567628762]})

`JSON::ArrayConverter.new` should be used if the nested converter is also an instance instead of a type.

    require "json"

    class TimestampArray
      include JSON::Serializable

      @[JSON::Field(converter: JSON::ArrayConverter.new(Time::Format.new("%b %-d, %Y")))]
      property dates : Array(Time)
    end

    timestamp = TimestampArray.from_json(%({"dates":["Apr 5, 2016","Sep 4, 2019"]}))
    timestamp.dates   # => [2016-04-05 00:00:00Z, 2019-09-04 00:00:00Z]
    timestamp.to_json # => %({"dates":["Apr 5, 2016","Sep 4, 2019"]})

This implies that `JSON::ArrayConverter(T)` and `JSON::ArrayConverter(T.class).new(T)` perform the same serializations.

##
Defined in:

json/from_json.cr
json/to_json.cr

##
Constructors

- .new(converter : Converter)

##
Class Method Summary

- .from_json(pull : JSON::PullParser)
- .to_json(values : Array, builder : JSON::Builder)

##
Constructor Detail

def self.new(converter : Converter) #

##
Class Method Detail

def self.from_json(pull : JSON::PullParser) #
def self.to_json(values : Array, builder : JSON::Builder) #