Basic Facebook CSV Product Feed Support for Solidus

facebook_data_feed_controller.rb

class FacebookDataFeedController < ApplicationController

  def export

    @products = Spree::Product.available

    respond_to do |format|
      format.csv { send_data @products.to_fb_csv, filename: "facebook-data-feed.csv" }
    end

  end

end

product_decorator.rb

Spree::Product.class_eval do

  def self.to_fb_csv
    variants = all.uniq.map {|p| p.variants.present? ? p.variants : p.variant }.flatten(1)
    CSV.generate do |csv|
      csv << ['id','title','availability','description','condition','price','link','image_link','brand']
      variants.each do |v|
        csv << [v.sku, v.name, v.in_stock? ? 'in stock' : 'out of stock', v.product.meta_description, 'new', v.price, ENV['BASE_URL'] + v.slug, v.display_image.attachment.url(:original), ENV['BRAND_NAME']]
      end
    end
  end

end

routes.rb

Rails.application.routes.draw do

  get  '/facebook-data-feed' => 'facebook_data_feed#export'

end