我编写了这个 ruby 脚本来从制造商网站上抓取产品信息。产品对象的抓取和存储在数组中有效,但我不知道如何将数组数据导出到 csv 文件。抛出此错误:scraper.rb:45: undefined method `send_data' for main:Object (NoMethodError)
我不明白这段代码。这是在做什么,为什么它不能正常工作?
send_data csv_data,
:type => 'text/csv; charset=iso-8859-1; header=present',
:disposition => "attachment; filename=products.csv"
完整代码:
#!/usr/bin/ruby
require 'rubygems'
require 'anemone'
require 'fastercsv'
productsArray = Array.new
class Product
attr_accessor :name, :sku, :desc
end
# Scraper Code
Anemone.crawl("http://retail.pelicanbayltd.com/") do |anemone|
anemone.on_every_page do |page|
currentPage = Product.new
#Product info parsing
currentPage.name = page.doc.css(".page_headers").text
currentPage.sku = page.doc.css("tr:nth-child(2) strong").text
currentPage.desc = page.doc.css("tr:nth-child(4) .item").text
if currentPage.sku =~ /#\d\d\d\d/
currentPage.sku = currentPage.sku[1..-1]
productsArray.push(currentPage)
end
end
end
# CSV Export Code
products = productsArray.find(:all)
csv_data = FasterCSV.generate do |csv|
# header row
csv << ["sku", "name", "desc"]
# data rows
productsArray.each do |product|
csv << [product.sku, product.name, product.desc]
end
end
send_data csv_data,
:type => 'text/csv; charset=iso-8859-1; header=present',
:disposition => "attachment; filename=products.csv"