当我尝试开始潇洒时,我收到以下错误:
scheduler caught exception:
uninitialized constant Nokogiri
/Users/Adam/projects/ticker/jobs/sample.rb:2:in `block in <top (required)>'
我的Gemfile是:
source 'https://rubygems.org'
gem 'nokogiri'
gem 'dashing'
my jobs文件夹包含一个文件夹sample.rb:
SCHEDULER.every '2s' do
oil_doc = Nokogiri::HTML(open("http://www.bloomberg.com/energy/"))
a = oil_doc.css("table.std_table_module").first
price = a.xpath("//td[3]").first.children.text
send_event('valuation', { current: price })
end
我尝试将require 'open-uri'
添加到Gemfile和sample.rb但它没有帮助!
答案 0 :(得分:5)
错误消息说它并不知道有关Nokogiri
的任何信息,require 'nokogiri'
是nokogiri gem中定义的模块。为了将其纳入范围,您需要添加:
sample.rb
到{{1}}(通常位于文件顶部)。