红宝石、Feedzirra、伤寒

Question

我对 Ruby 真的很陌生（第一天！），我在这里遇到了困难。我正在尝试与 Typhoeus 结合构建一个 rss 解析器，因为我正在解析 100 多个提要，也因为我想让它正常工作。

这就是我的代码：

require 'typhoeus'
require 'feedzirra'

feed_urls = ["feed1", "feed2"]

hydra = Typhoeus::Hydra.new
feeds = {}
entry = {}
feed_urls.each do |feed|
  r = Typhoeus::Request.new(feed)
  r.on_complete do |response|
    feeds[r.url] = response.body
    feeds[r.url] = Feedzirra::Feed.parse(response.body)
    entry = feeds.entries.each do |entry|
      puts entry.title
    end
    hydra.queue r
  end
end

hydra.run

我确信这是一些语法问题。我还有一些困难时期。例如，我总是用 ; 来结束行，尽管在编写 PHP 时我总是忘记它。那么，也许有人可以帮忙？在没有伤寒的情况下获得饲料结果并不难。

编辑：

>> puts feeds.entries.inspect
[["http://feedurl", #<Feedzirra::Parser::AtomFeedBurner:0x1023b53f0 @title="Paul Dix Explains Nothing", @entries=[#<Feedzirra::Parser::AtomFeedBurnerEntry:0x1023b05d0 @published=Thu Jan 13 16:59:00 UTC 2011, @author="Paul Dix", @summary="Earlier this week I had the opportunity to sit with six other people from the NYC technology scene and talk to NYC Council Speaker Christine Quinn and a few members of her staff. Charlie O'Donnell organized the event to help...", @updated=Thu Jan 13 17:55:31 UTC 2011, @title="Water water everywhere and not a drop to drink: The Myth and Truth of the NYC engineer shortage", @entry_id="tag:typepad.com,2003:post-6a00d8341f4a0d53ef0148c793f692970c", @content="....

所以，我至少得到了一些东西。

Answer 1

看来您正在 on_complete 块内排队。你不应该在 feed_urls.each 块中排队吗？或者也许您应该在所有请求完成后检查所有条目？像这样：

hydra = Typhoeus::Hydra.new
feeds = {}
entry = {}
feed_urls = ["feed1", "feed2"]

feed_urls.each do |feed|
  r = Typhoeus::Request.new(feed)
  r.on_complete do |response|
      feeds[r.url] = response.body
      feeds[r.url] = Feedzirra::Feed.parse(response.body)
  end

  hydra.queue r
end

hydra.run

feeds.entries.each do |feed|
  puts "-- " + feed[1].title

  feed[1].entries.each do |entry|
    puts entry.title
  end
end

Answer 2

您在块的末尾缺少 end 。如果你一致地缩进你的代码，你会看到这个漏洞：

require 'typhoeus'
require 'feedzirra'
feed_urls = ["feed1", "feed2"]    
hydra = Typhoeus::Hydra.new
feeds = {}
entry = {}
feed_urls.each do |feed|
  r = Typhoeus::Request.new(feed)
  r.on_complete do |response|
    feeds[r.url] = response.body
    feeds[r.url] = Feedzirra::Feed.parse(response.body)
    entry = feeds.entries.each do |entry|
      puts entry.title
    end
    hydra.queue r
  end

### You need an 'end' on this line to close the `each` ###

hydra.run

欢迎使用 Ruby 和 Stack Overflow！ :)