帮助生成“友好的url”;在Razor (c# /MVC 4)

本文关键字：Razor MVC url 友好的 帮助 | 更新日期: 2023-09-27 18:18:10

目标

在Razor中创建一些将字符串转换为友好字符串的东西(我使用c#/MVC4)

我有以下代码:

<li>
   <img 
    src="~/Images/Products/@Model["CategoryName"]/@Model["ProductThumbnailUrl"]"
   />
</li>

我的类别的名称是:CDs, DVDs and Bluray，我想连接为"友好字符串"，像cds-dvds-and-blurays使用这样的东西:

<li>
   <img 
    src="~/Images/Products
          /@HtmlHelper.ConvertToFriendlyString(@Model["CategoryName"])
          /@Model["ProductThumbnailUrl"]"
   />
</li>

你们都能明白吗?

那么，有人有什么想法吗?

帮助生成“友好的url”;在Razor (c# /MVC 4)

我以前这样做过。在我挖掘代码时，需要考虑以下事项:

  1. 确保你存储了你生成的url，这样你可以做碰撞检测;将字符串转换为友好的url几乎肯定会有损耗，所以您需要逻辑来解决冲突的名称。
    2. 你应该试着把变音符转换成更容易输入的字符。
  2. 考虑将url到资源的映射设置为1:多关系;如果你的资源的名字改变了，你可能想要生成一个新的URL 和有旧的URL重定向到新的。

UPDATE:这是我的代码。堆栈溢出方法是可以的，但我更喜欢我的;它没有使用一组字符替换，而是使用强大的。net Unicode库来创建更友好的字符:

public static string ConvertToFriendlyUrl(string text)
{
    var decomposed = text.Normalize(NormalizationForm.FormKD);
    var builder = new StringBuilder();
    foreach (var ch in decomposed)
    {
        var charInfo = CharUnicodeInfo.GetUnicodeCategory(ch);
        switch (charInfo)
        {
            // Keep these as they are
            case UnicodeCategory.DecimalDigitNumber:
            case UnicodeCategory.LetterNumber:
            case UnicodeCategory.LowercaseLetter:
            case UnicodeCategory.CurrencySymbol:
            case UnicodeCategory.OtherLetter:
            case UnicodeCategory.OtherNumber:
                builder.Append(ch);
                break;
            // Convert these to dashes
            case UnicodeCategory.DashPunctuation:
            case UnicodeCategory.MathSymbol:
            case UnicodeCategory.ModifierSymbol:
            case UnicodeCategory.OtherPunctuation:
            case UnicodeCategory.OtherSymbol:
            case UnicodeCategory.SpaceSeparator:
                builder.Append('-');
                break;
            // Convert to lower-case
            case UnicodeCategory.TitlecaseLetter:
            case UnicodeCategory.UppercaseLetter:
                builder.Append(char.ToLowerInvariant(ch));
                break;
            // Ignore certain types of characters
            case UnicodeCategory.OpenPunctuation:
            case UnicodeCategory.ClosePunctuation:
            case UnicodeCategory.ConnectorPunctuation:
            case UnicodeCategory.Control:
            case UnicodeCategory.EnclosingMark:
            case UnicodeCategory.FinalQuotePunctuation:
            case UnicodeCategory.Format:
            case UnicodeCategory.InitialQuotePunctuation:
            case UnicodeCategory.LineSeparator:
            case UnicodeCategory.ModifierLetter:
            case UnicodeCategory.NonSpacingMark:
            case UnicodeCategory.OtherNotAssigned:
            case UnicodeCategory.ParagraphSeparator:
            case UnicodeCategory.PrivateUse:
            case UnicodeCategory.SpacingCombiningMark:
            case UnicodeCategory.Surrogate:
                break;
        }
    }
    var built = builder.ToString();
    while (built.Contains("--")) 
        built = built.Replace("--", "-");
    while (built.EndsWith("-"))
    {
        built = built.Substring(0, built.Length - 1);
    }
    while (built.StartsWith("-"))
    {
        built = built.Substring(1, built.Length - 1);
    }
    return built;
}
public static string GetIncrementedUrl(string url)
{
    var parts = url.Split('-');
    var lastPortion = parts.LastOrDefault();
    int numToInc;
    bool incExisting;
    if (lastPortion == null)
    {
        numToInc = 1;
        incExisting = false;
    }
    else
    {
        if (int.TryParse(lastPortion, out numToInc))
        {
            incExisting = true;
        }
        else
        {
            incExisting = false;
            numToInc = 1;
        }
    }
    var fragToKeep = incExisting 
        ? string.Join("-", parts.Take(parts.Length - 1).ToArray()) 
        : url;
    return fragToKeep + "-" + (numToInc + 1).ToString();
}
public static string SeekUrl(
    string name, Func<string, bool> uniquenessCheck)
{
    var urlName = UrlUtils.ConvertToFriendlyUrl(name);
    while (!uniquenessCheck(urlName))
    {
        urlName = UrlUtils.GetIncrementedUrl(urlName);
    }
    return urlName;
}
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