Question

我已经从社区获得了一些帮助，在将它放入2D数组之前将一些gif和url替换为HTML表中的有用数据，但我认为我实际需要的是将表的每一行存储为在activerecord条目中哈希。

以下是带标题的第一行示例数据：

html2 = <<TABLE2
<table class="status">
<caption class="status">Drive status</caption>
<tr class="status">
<th class="status"></th>
<th class="status">Drive</th>
<th class="status">State</th>
<th class="status">Health</th>
<th class="status">Make/Model</th>
<th class="status">Speed</th>
<th class="status">Serial</th>
<th class="status">Firmware</th>
<th class="status"><a href="/cgi-bin/status_dylan?cont=0&amp;dylan=0&amp;display=1">Sectors</a></th>
<th class="status">Temp</th>
<th class="status"> </th>
</tr>
<tr class="status">
<td class="status"><img border="0" src="/tick_green.gif"></td>
<td class="status">0</td>
<td class="status">Ready</td>
<td class="status"><a href="/cgi-bin/status_drive?cont=0&amp;dylan=0&amp;drive=0"><img border="0" src="/bar10.gif"></a></td>
<td class="status">SEAGATE ST3146807FC</td>
<td class="status">10000 RPM</td>
<td class="status">3HY61E1B</td>
<td class="status">XR12</td>
<td class="status">286749488</td>
<td class="status"> 29.0&#176;C</td>
<td class="status" style="background-color: #fefe00">&#160;
</td>
</tr>

clean_table2 = []
  table2.css('tr').each do |tr|
    clean_row = []
    tr.css('td').each do |td|
      #for each cell, look for img tags, and replace the images with text as appropriate, then strip the html
      img = td.at('img')
      clean_row.push case
      when img && img[:src][/bar(\d+)\.gif/] then 'Health: '+$1
      when img && img[:src][/tick_green/] then 'Healthy'
      when img && img[:src][/cross_red/] then 'Failed'
      when img && img[:src][/caution/] then 'Caution'
      else td.text.strip
      end

    end
  clean_table2.push clean_row
  #puts clean_row[5]
  end
  puts "\n"
#puts clean_table.join("\n")
clean_table2.each {|x|
  puts "#{x}"
}

这是用于删除所有不重要的代码并用理性文本替换'无用'的GIF代码 - =但我正在创建的哈希值并不像我希望的那样有用 - 所以我宁愿使用哈希创建一个哈希值表头作为键然后我可以将服务器序列号和aray地址输入到activerecord条目中，以便我可以比较和显示记录实例之间的增量（例如，如果驱动器运行状况从10减少到5）你们都觉得怎么样？我可以比较数组，但我认为由于记录检索速度很快，我只能存储不同的更改，而不是每次存在更改时存储二维数组（我认为这会很快失控）

......正如你可能猜到的那样，我也试图把这一点直接放在脑海里;）非常感谢斯科特

Answer 1

略微改写，并使其更合乎逻辑......

  table = html_page.parser.xpath('//table/caption[contains(.,"Drive")]/..')
  #loop through each row individually (or do I want to chuck the whole thing into a nice juicy hash)
  #Am I using this?  #REMOVE
  clean_table = Array.new
  clean_head=[]
  table.css('tr').each do |tr|
    #stash WWN number, fake interface and fake address [can get, but not needed at this stage]
    clean_row = {:wwn=>cells[0],:dyl_if=>'1',:dyl_addr=>'0'}
    #grab headers
    tr.css('th').each_with_index do |th,i| 
      if i == 0
        clean_head.push "Drive Health"
      else if i == 10
        clean_head.push "BG Temp"
      else clean_head.push th.text.strip
      end
    end
  end
    #each td in each tr - add index so I can add table headers as keys in hash
    tr.css('td').each_with_index do |td, i|
      #for each cell, look for img tags, and replace the images with text as appropriate, then strip the html
      img = td.at('img')

      clean_row[clean_head[i]] = case 
      when img && img[:src][/bar(\d+)\.gif/] then 'Health: '+$1
      when img && img[:src][/tick_green/] then 'Healthy'
      when img && img[:src][/cross_red/] then 'Failed'
      when img && img[:src][/caution/] then 'Caution'
    else td.text.strip
      end
    end
    #Debug output - confirm nothing cocked up
    puts clean_row
    if clean_row.has_key?("Health")
      Drive_Record.create(clean_row)
      puts "Add Drive Recprd"
     end

end

开始使用ActiveRecord - 我想存储一个HTML表并将其转换为Hash

1 个答案: