将散列的内容保存到模型中

Question

慢慢达到我想达到的目标。我通过屏幕抓取数据，并希望将数据保存到我的模型，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

我已经把两种方法的数据散列，一个是哈希，另一个是哈希中的哈希，我不确定哪一个我需要(如果有的话?)

所以如果我想保存从我的home_team收到的数据，我运行一个rake任务来做这个

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保存home_team和away_team。我是否需要访问哈希中的数据，如果需要，如何访问?这里有点迷失，但这是我第一次尝试这个

感谢您的帮助

Answer 1

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

这将循环遍历比赛，并为每场比赛创建一个新的Fixture，其中包含客场和主队。

编辑:

新增.text.strip

编辑2:

这应该也能得到日期，

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

这比前面的代码要复杂一些，因为它必须使用一些XPath来调用h2标签后面包含日期的下一个HTML元素。

它循环遍历div#fixtures-data html中的所有h2 html标签，然后在每个h2的下方/之后捕获table标签。