Contents

# frozen_string_literal: true

require_relative 'sort/direction'

module Realize
  class Collection
    # Transformer to take an array of oibjects and sort by the given key
    # and by the given sort direction. Defaulting to ascending.
    class Sort
      include Arrays
      include Direction
      acts_as_hashable

      DEFAULT_ORDER = ASCENDING

      attr_reader :key, :order

      def initialize(key:, order: DEFAULT_ORDER)
        raise ArgumentError, 'key is required' if key.to_s.empty?

        @key   = key
        @order = Direction.const_get(order.to_s.upcase.to_sym)

        freeze
      end

      def transform(_resolver, value, _time, _record)
        records = array(value)

        sorted = records.sort_by { |hsh| hsh[key.to_sym] }

        order == DESCENDING ? sorted.reverse : sorted
      end
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
realize-1.0.0.pre.alpha.3	lib/realize/collection/sort/direction.rb
realize-1.0.0.pre.alpha.2	lib/realize/collection/sort/direction.rb
realize-1.0.0.pre.alpha.1	lib/realize/collection/sort/direction.rb
realize-1.0.0.pre.alpha	lib/realize/collection/sort/direction.rb