紅寶石 - 插入散列值

Question

我有這段代碼。我想在每個細節的'details'數組中插入一個新的鍵值對（mine_id，123456）。我不知道如何做到這一點。花了大約5個小時嘗試一下。我是Ruby新手，非常感謝您的幫助。

再次感謝 問候

mineId = "123456" 

doc = Nokogiri::HTML.parse($browser.html) 
rows = doc.xpath(".//*[@id='content']/table/tbody/tr") 
details = rows.collect do |row| 
    detail = {} 
    [ 
    [:prod_year, 'td[1]/font/text()'], 
    [:prod_qtr, 'td[2]/font/text()'], 
    [:subunit_cd, 'td[3]/font/text()'], 
    [:subunit, 'td[4]/font/text()'], 
    [:qtr_hrs, 'td[5]/font/text()'], 
    [:coal_prod, 'td[6]/font/text()'], 
    [:avg_emp_cnt, 'td[7]/font/text()'], 
    ].each do |name, xpath| 
    detail[name] = row.at_xpath(xpath).to_s.strip 
    end 
    detail 
end 

Answer 1

您可以右鍵調用合併細節的散列或明確設置的鍵返回從塊的詳細信息前添加鍵值。

doc = Nokogiri::HTML.parse($browser.html) 
rows = doc.xpath(".//*[@id='content']/table/tbody/tr") 
details = rows.collect do |row| 
    detail = {} 
    [ 
    [:prod_year, 'td[1]/font/text()'], 
    [:prod_qtr, 'td[2]/font/text()'], 
    [:subunit_cd, 'td[3]/font/text()'], 
    [:subunit, 'td[4]/font/text()'], 
    [:qtr_hrs, 'td[5]/font/text()'], 
    [:coal_prod, 'td[6]/font/text()'], 
    [:avg_emp_cnt, 'td[7]/font/text()'], 
    ].each do |name, xpath| 
    detail[name] = row.at_xpath(xpath).to_s.strip 
    end  
    detail.merge(:mineId => "123456") 
end 

Answer 2

我會做如下使用Enumerable#each_with_object。

doc = Nokogiri::HTML.parse($browser.html) 
rows = doc.xpath(".//*[@id='content']/table/tbody/tr") 
details = rows.collect do |row| 
    [ 
    [:prod_year, 'td[1]/font/text()'], 
    [:prod_qtr, 'td[2]/font/text()'], 
    [:subunit_cd, 'td[3]/font/text()'], 
    [:subunit, 'td[4]/font/text()'], 
    [:qtr_hrs, 'td[5]/font/text()'], 
    [:coal_prod, 'td[6]/font/text()'], 
    [:avg_emp_cnt, 'td[7]/font/text()'], 
    ].each_with_object({:mineId => 123456}) do |(name, xpath), detail| 
    detail[name] = row.at_xpath(xpath).to_s.strip 
    end  
end 

它沒有一個Hash，其中鍵/值存在內部關係，因爲最後你會尋找使用鍵值，所以位置無所謂。這就是我在#each_with_object方法的初始參數Hash的第一位添加鍵/值對（:mine_id, 123456）的原因。