Question

在Trac（1.2）中，我想创建一个报告，其中所有故障单按修改时间排序，颜色应指示组件（或是否已关闭）。

我认为按__color__设置component可以解决这个问题，但是报告跟踪报告会将所有活动门票显示为白色：

SELECT 
  DISTINCT 
   component AS __color__,
   (CASE status 
      WHEN 'closed' THEN 'color: #777; background: #ddd; border-color: #ccc;'
    END) AS __style__,
   id AS ticket, summary, component, milestone, status, resolution, 
   t.time AS created, changetime AS modified,
   priority AS _priority, reporter AS _reporter, cc AS _cc
  FROM ticket t
  LEFT JOIN enum p ON p.name = t.priority AND p.type = 'priority'
  LEFT JOIN ticket_change tc ON id = tc.ticket
  ORDER BY
    changetime DESC

如何根据故障单引用的组件更改颜色？

Answer 1

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.Net; using System.IO; using System.Text.RegularExpressions; using System.Net.Cache; namespace DateTime { public partial class Form1 : Form { public Form1() { InitializeComponent(); System.DateTime dt = GetNistTime(); } public static System.DateTime GetNistTime() { System.DateTime dateTime = System.DateTime.MinValue; HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://nist.time.gov/actualtime.cgi?lzbc=siqm9b"); request.Method = "GET"; request.Accept = "text/html, application/xhtml+xml, */*"; request.UserAgent = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0)"; request.ContentType = "application/x-www-form-urlencoded"; request.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore); //No caching HttpWebResponse response = (HttpWebResponse)request.GetResponse(); if (response.StatusCode == HttpStatusCode.OK) { StreamReader stream = new StreamReader(response.GetResponseStream()); string html = stream.ReadToEnd();//<timestamp time=\"1395772696469995\" delay=\"1395772696469995\"/> string time = Regex.Match(html, @"(?<=\btime="")[^""]*").Value; double milliseconds = Convert.ToInt64(time) / 1000.0; dateTime = new System.DateTime(1970, 1, 1).AddMilliseconds(milliseconds).ToLocalTime(); } return dateTime; } private void Form1_Load(object sender, EventArgs e) { } } }只能用于值为1到5的枚举，请参阅documentation。你可以这样做：

__color__

Answer 2

受到@RjOllos答案的启发，我选择使用案例陈述来设置__color__：

(CASE component
   WHEN 'COMPONENT1' THEN 1
   WHEN 'COMPONENT2' THEN 2
   WHEN 'COMPONENT3a' THEN 4
   WHEN 'COMPONENT3b' THEN 4
   WHEN 'COMPONENT4' THEN 5
   ELSE 3
 END) AS __color__,

这样做的好处是行保持交替的颜色。

如何按组件为Trac报告中的票证着色？

2 个答案: