openfoodnetwork/app/controllers/spree/admin/shipping_methods_controller.rb

module Spree
  module Admin
    class ShippingMethodsController < ResourceController
      before_filter :load_data, except: [:index]
      before_filter :set_shipping_category, only: [:create, :update]
      before_filter :set_zones, only: [:create, :update]

      def destroy
        @object.touch :deleted_at

        flash[:success] = flash_message_for(@object, :successfully_removed)

        respond_with(@object) do |format|
          format.html { redirect_to collection_url }
          format.js { render_js_for_destroy }
        end
      end

      private

      def set_shipping_category
        return true if params["shipping_method"][:shipping_categories] == ""
        @shipping_method.shipping_categories =
          Spree::ShippingCategory.where(id: params["shipping_method"][:shipping_categories])
        @shipping_method.save
        params[:shipping_method].delete(:shipping_categories)
      end

      def set_zones
        return true if params["shipping_method"][:zones] == ""
        @shipping_method.zones = Spree::Zone.where(id: params["shipping_method"][:zones])
        @shipping_method.save
        params[:shipping_method].delete(:zones)
      end

      def location_after_save
        edit_admin_shipping_method_path(@shipping_method)
      end

      def load_data
        @available_zones = Zone.order(:name)
        @calculators = ShippingMethod.calculators.sort_by(&:name)
      end
    end
  end
end