openfoodnetwork/app/helpers/spree/admin/zones_helper.rb

module Spree
  module Admin
    module ZonesHelper
      # This method creates a link which uses javascript to add a new
      # form partial to the DOM.
      #
      #   <%= form_for @project do |project_form| %>
      #     <div id="tasks">
      #       <%= project_form.fields_for :tasks do |task_form| %>
      #         <%= render partial: 'task', locals: { f: task_form } %>
      #       <% end %>
      #     </div>
      #   <% end %>
      def generate_html(form_builder, method, options = {})
        options[:object] ||= form_builder.object.class.reflect_on_association(method).klass.new
        options[:partial] ||= method.to_s.singularize
        options[:form_builder_local] ||= :f

        form_builder.fields_for(method, options[:object], child_index: 'NEW_RECORD') do |f|
          render(partial: options[:partial], locals: { options[:form_builder_local] => f })
        end
      end

      def generate_template(form_builder, method, options = {})
        escape_javascript generate_html(form_builder, method, options)
      end

      def remove_nested(fields)
        out = ''
        out << fields.hidden_field(:_destroy) unless fields.object.new_record?
        out << (link_to icon('icon-remove'), "#", class: 'remove')
        out.html_safe
      end
    end
  end
end