groups_categories.rb

gistfile1.rb

def create_category(category_node)
  url = category_node.xpath("./a[1]/@href").text
  name = url.sub("http://catalog.onliner.by/","").delete('/')
  name_ru = category_node.xpath("./a[last()]").text
  is_new = category_node.xpath("./a[2]/img[@class='img_new']").any?
  Category.create({ name: name, name_ru: name_ru, url: url, is_new: is_new })
end

def create_group(group_node)
  name = group_node.text.delete("0-9")
  Group.create({ name_ru: name })
end

groups = html.xpath("//h1[@class='cm__h1']")
categories_blocks = html.xpath("//ul[@class='b-catalogitems']")

groups.zip(categories_blocks).map do |group_node, categories_block|
  group = create_group(group_node)
  categories_block.xpath("./li").map do |category_node|
    category = create_category(category_node)
    group.add_category(category)
  end
end