Form helper for serialised attributes of type array-of-hashes.

fields_for_array_of_hashes.rb

module ActionView
  module Helpers
    class FormBuilder
      # - f.fields_for_array_of_hashes :links do |lnk|
      #   .item
      #     = lnk.text_field :name
      #     = lnk.text_field :url
      def fields_for_array_of_hashes(record_name, record_object = nil, options = {}, &block)
        @object.send(record_name).each do |e|
          e = OpenStruct.new(e)
          def e.to_s; ''; end
          @template.concat fields_for("#{record_name}[]", e, options, &block)
        end
        ''
      end
    end
  end
end