gistfile1.rb

require 'fastercsv'

class Importer
  
  def self.import_products(folder)
    
    assets = {}
    FasterCSV.foreach("#{folder}/assets.csv") do |row|
      assets[row[0]] = row[1]
    end
    
    FasterCSV.foreach("#{folder}/products.csv") do |row|
      next if row[0] == "Action"
      
      taxonomy = Taxonomy.find_or_create_by_name "Categories"

      taxon_names = row[6].split "->"
      taxon_names.unshift "Categories"
      
      taxons = []
      parent = nil
      taxon_names.each do |taxon_name|
        position = parent ? parent.children.count : 0
        taxon = Taxon.find_or_create_by_name :name => taxon_name, :parent => parent, :position => position, :taxonomy => taxonomy
        taxons << taxon
        parent = taxon
      end
      
      product_attributes = {
        :description => row[5],
        :master_price => row[7],
        :name => row[3] }
        
      variant_attributes = {
        :depth => row[11],
        :height => row[13],
        :sku => row[1],
        :weight => row[10],
        :width => row[12] }
      
      variant = Variant.find_by_sku variant_attributes[:sku]
      
      if variant
        product = variant.product
        product.attributes = product_attributes
        variant.attributes = variant_attributes
        product.taxons.replace taxons
        puts "updating existing sku #{variant.sku}"
      else
        product = Product.new product_attributes.merge :available_on => Time.now
        variant = product.variants.build variant_attributes.merge(:product => product)
        product.taxons << taxons
        puts "creating new sku #{variant.sku}"
      end
      
      if product.new_record? && File.file?("#{folder}/assets/#{assets[product.sku]}")
        product.images.build \
          :attachment => File.new("#{folder}/assets/#{assets[product.sku]}")
      end
      
      if product.save && variant.save
        puts "saved sku #{variant.sku}"
      else
        puts "failed to save sku #{variant.sku}"
        puts product.errors.full_messages
        puts variant.errors.full_messages
        raise
      end
      
      puts
    end
    
  end
end