如何在Rails中将HTML格式的文本打印到选定的打印机？是否有宝石或红宝石代码允许这个？
例如：
1-我在linux上安装了3台打印机：＆＃39; printer_a＆＃39;，＆＃39; printer_b＆＃39;和＆＃39; printer_c＆＃39;。
2-我有一个布局<?xml version="1.0" encoding="utf-8"?>
<log>
<logData id="Alpha">
<data><index>100</index><value>150</value></data>
<data><index>110</index><value>750</value></data>
<data><index>120</index><value>750</value></data>
<data><index>130</index><value>150</value></data>
<data><index>140</index><value>0</value></data>
<data><index>150</index><value>222</value></data>
</logData>
<logData id="Bravo">
<data>
<index>100</index>
<value>25</value>
</data>
<data>
<index>110</index>
<value>11</value>
</data>
<data>
<index>120</index>
<value>1</value>
</data>
<data>
<index>130</index>
<value>25</value></data>
<data>
<index>140</index>
<value>0</value>
</data>
<data>
<index>150</index>
<value>1</value>
</data>
</logData>
</log>
3-我希望Rails不是将static void Main(string[] args)
{
List<LogData> logDatas = GetLogDatasFromFile("singleVersusMultLine.xml");
Debug.WriteLine("Main");
Debug.WriteLine("logData");
foreach (LogData logData in logDatas)
{
Debug.WriteLine($" logData.ID {logData.ID}");
foreach(LogPoint logPoint in logData.LogPoints)
{
Debug.WriteLine($" logData.Index {logPoint.Index} logData.Value {logPoint.Value}");
}
}
Debug.WriteLine("end");
}
public static List<LogData> GetLogDatasFromFile(string xmlFile)
{
List<LogData> logDatas = new List<LogData>();
using (XmlReader reader = XmlReader.Create(xmlFile))
{
// move to next "logData"
while (reader.ReadToFollowing("logData"))
{
var logData = new LogData(reader.GetAttribute("id"));
using (var logDataReader = reader.ReadSubtree())
{
// inside "logData" subtree, move to next "data"
while (logDataReader.ReadToFollowing("data"))
{
// move to index
logDataReader.ReadToFollowing("index");
// read index
var index = int.Parse(logDataReader.ReadElementContentAsString());
// move to value
logDataReader.ReadToFollowing("value");
// read value
var value = double.Parse(logDataReader.ReadElementContentAsString(), CultureInfo.InvariantCulture);
logData.LogPoints.Add(new LogPoint(index, value));
}
}
logDatas.Add(logData);
}
}
return logDatas;
}
public class LogData
{
public string ID { get; }
public List<LogPoint> LogPoints { get; } = new List<LogPoint>();
public LogData (string id)
{
ID = id;
}
}
public class LogPoint
{
public int Index { get; }
public double Value { get; }
public LogPoint ( int index, double value)
{
Index = index;
Value = value;
}
}
呈现给客户端的浏览器，而是通过toprint.html.erb发送要打印的HTML页面。
问题在于我无法找到Rails为我这样做的方式