module JqueryDynamicFieldsHelper
  module FieldHelper
    def link_to_add_fields name, f, association
      new_object = f.object.send(association).class.new
      id = new_object.object_id
      fields = f.fields_for(association, new_object, child_index: id) do |builder|
        render(association.to_s.singularize + "_fields", f: builder)
      end
      link_to(name, '#', class: "add_fields", data: {id: id, fields: fields.gsub("\n", "")})
    end

    def link_to_remove_field f
      (f.hidden_field :_destroy) +
        link_to("remove", "#", class: "remove_field")
    end
  end
end