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慢慢实现我想要实现的目标。我正在通过屏幕抓取抓取数据并希望将数据保存到我的模型中，我有两列，home_team 和 away_team。到目前为止，我抓取了数据。

FIXTURE_URL = "http://www.bbc.co.uk/sport/football/premier-league/fixtures"

def get_fixtures # Get me all Home and away Teams
doc = Nokogiri::HTML(open(FIXTURE_URL))
home_team = doc.css(".team-home.teams").map {|h| h.text.strip }
away_team = doc.css(".team-away.teams").map {|a| a.text.strip }
#team_clean = Hash[:home_team => home_team, :away_team => away_team]
#team_clean = Hash[:team_clean => [Hash[:home_team => home_team, :away_team => away_team]]]
end

我已经讨论了两种将数据放入散列的方法，一种是散列，另一种是散列中的散列，我不确定我需要哪一个（如果有的话？）

因此，如果我想保存从我的 home_team 收到的数据，我会运行一个 rake 任务来执行此操作

def update_fixtures #rake task method
Fixture.destroy_all
get_fixtures.each {|home| Fixture.create(:home_team => home )}
end

我想要实现的是能够同时拯救 home_team 和 away_team。我是否需要访问散列中的数据，如果需要，如何访问？这里有点丢失，但这是我第一次尝试这个

任何帮助表示赞赏

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1 回答 1

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试试这个，

FIXTURE_URL = "http://www.bbc.co.uk/sport/football/premier-league/fixtures"

def get_fixtures # Get me all Home and away Teams
  doc = Nokogiri::HTML(open(FIXTURE_URL))
  matches = doc.css('tr.preview')
  matches.each do |match|
    home_team = match.css('.team-home').text.strip
    away_team = match.css('.team-away').text.strip
    Fixture.create!(home_team: home_team, away_team: away_team)
  end
end

这将循环播放比赛，Fixture并为每场比赛创建一个新的客队和主队。

编辑：

添加.text.strip

编辑2：

这也应该为您提供日期，

FIXTURE_URL = "http://www.bbc.co.uk/sport/football/premier-league/fixtures"

def get_fixtures # Get me all Home and away Teams
  doc = Nokogiri::HTML(open(FIXTURE_URL))
  days = doc.css('#fixtures-data h2').each do |h2_tag|
    date = Date.parse(h2_tag.text.strip)
    matches = h2_tag.xpath('following-sibling::*[1]').css('tr.preview')
    matches.each do |match|
      home_team = match.css('.team-home').text.strip
      away_team = match.css('.team-away').text.strip
      Fixture.create!(home_team: home_team, away_team: away_team, date: date)
    end
  end
end

它比前面的代码复杂一点，因为它必须使用一些 XPath 来调用h2包含日期的标记之后的下一个 HTML 元素。

它遍历h2HTML 中的所有 html 标签，div#fixtures-data然后table在每个h2.

于 2013-03-14T11:51:53.750 回答