Contents

module CouchPotato
  module Persistence
    class TypeCaster #:nodoc:
      NUMBER_REGEX = /-?\d*\.?\d*/

      def cast(value, type)
        if type == :boolean
          cast_boolean(value)
        elsif type.instance_of?(Array)
          nested_type = type.first
          value.map { |val| cast_native(val, nested_type) } if value
        else
          cast_native(value, type)
        end
      end

      private

      def cast_boolean(value)
        if [FalseClass, TrueClass].include?(value.class) || value.nil?
          value
        elsif [0, '0', 'false'].include?(value)
          false
        else
          true
        end
      end

      def cast_native(value, type)
        if type && !value.instance_of?(type)
          if type == Fixnum
            BigDecimal.new(value.to_s.scan(NUMBER_REGEX).join).round unless value.blank?
          elsif type == Float
            value.to_s.scan(NUMBER_REGEX).join.to_f unless value.blank?
          elsif type == BigDecimal
            BigDecimal.new(value.to_s) unless value.blank?
          elsif type == Hash
            value.to_hash unless value.blank?
          else
            type.json_create value unless value.blank?
          end
        else
          value
        end
      end

    end
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
couch_potato-1.4.0	lib/couch_potato/persistence/type_caster.rb
couch_potato-1.3.0	lib/couch_potato/persistence/type_caster.rb
couch_potato-1.2.0	lib/couch_potato/persistence/type_caster.rb
couch_potato-1.1.4	lib/couch_potato/persistence/type_caster.rb
couch_potato-1.1.2	lib/couch_potato/persistence/type_caster.rb