Module: Virtus::Multiparams::AttributeSetExtension

Defined in:
lib/virtus/multiparams.rb

Instance Method Summary collapse

Instance Method Details

#coerce(attributes) ⇒ Object 



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# File 'lib/virtus/multiparams.rb', line 11

def coerce(attributes)
  super(attributes).tap do |attributes|
    multiparams = Hash.new { |hash, key| hash[key] = {} }

    attributes.each do |(key, value)|
      if /\A(?<name>.+)\((?<offset>[0-9]+)(?<cast>[if])?\)\Z/ =~ key
        attributes.delete(key)

        unless attributes.include? name
          offset = offset.to_i
          value = value.send("to_#{cast}") if cast
          multiparams[name][offset] = value
        end
      end
    end

    multiparams.each do |name, values|
      array = Array.new(values.keys.max)

      values.each do |offset, value|
        array[offset - 1] = value
      end

      # Virus::Attribute has a primitive type which might be Date, Time, DateTime, etc.
      attribute = self[name]

      attributes[name] =
        if attribute.primitive <= Date || attribute.primitive <= Time
          # Basic convesion is enough, Virtus invokes `to_date[time]`
          # Also, lololol timezones
          if array.length >= 3 && array[0...3].none?(&:nil?) && array[0...3].none?(&:zero?)
            Time.new(*array[0...6])
          end
        else
          array
        end
    end
  end
end