在Umbraco中使用XSLT从Xml中选择前X个项目

我有一个基于Umbraco的博客,我想在我博客的首页上显示每个类别的前10个帖子.类别只是我的文档类型的另一个属性.

Umbraco基本上将其内容存储为XML,因此category是我的博客文章xml的一个元素.

我使用Blog4Umbraco作为Umbraco的基础博客包,它将博客帖子(“文档”)存储在基于日期的年/月/日层次结构中.例如如果我今天创建了一个博客文章“帮助我”,它将在/ 2011/02/16 / help-me-with-this.

我有xlst来显示所有帖子.它遍历每个文件夹,然后按日期排序.问题是我只想要每个类别的10篇最新博客文章.以下xslt显示选择特定类别的所有博客帖子.我如何将其限制为10只,因为我可能需要跨越多个文件夹(多天,几个月甚至几年)才能获得10个？

<msxsl:script implements-prefix='ss' language='CSharp'>  
<![CDATA[
public string monthName(int monthNum)
{
DateTime date = new DateTime(1,monthNum,1);
return date.ToString("MMMM");
}
public int dayNumber(string date)
{
DateTime mydate = DateTime.Parse(date);
return mydate.Day;
}]]>
</msxsl:script>

<xsl:output method="html" omit-xml-declaration="yes"/>

<xsl:param name="currentPage"/>
<xsl:param name="topic" select="/macro/category"/>

<xsl:template match="/">
<div id="archive">
  <h3><xsl:value-of select="$topic" /></h3>
  <xsl:for-each select="$currentPage/ancestor-or-self::node [@nodeTypeAlias = 'Blog']/node [@nodeTypeAlias = 'DateFolder']">
  <xsl:sort select="number(@nodeName)" data-type="number" order="descending"/>
  <xsl:for-each select="./node [@nodeTypeAlias = 'DateFolder']">
  <xsl:sort select="number(@nodeName)" data-type="number" order="descending"/>

  <xsl:for-each select=".//node [@nodeTypeAlias = 'BlogPost']">
    <xsl:sort select="ss:dayNumber(@createDate)" data-type="number" order="descending"/>
  <xsl:if test="./data[@alias='topic'] = $topic">
  <div class="listing">
    <a href="{umbraco.library:NiceUrl(@id)}"><xsl:value-of select="@nodeName"/></a> <br/> 
    <small>
      Posted: <xsl:value-of select="umbraco.library:LongDate(@createDate)"/>
      By: <xsl:value-of select="@writerName"/><br />
    </small>
    <xsl:if test="string-length(./data [@alias = 'blogSummary']) = 0">
      <xsl:value-of select="substring(umbraco.library:StripHtml(./data [@alias = 'bodyText']), 1, 200)"/>...
    </xsl:if>

    <xsl:if test="string-length(./data [@alias = 'blogSummary']) &gt; 0">
      <xsl:value-of select="./data [@alias = 'blogSummary']"/>
    </xsl:if>


  </div>
  </xsl:if>
</xsl:for-each>
</xsl:for-each>
</xsl:for-each>
</div>
</xsl:template>

代替：

<xsl:for-each select=".//node [@nodeTypeAlias = 'BlogPost']">
    <xsl:sort select="ss:dayNumber(@createDate)"
          data-type="number" order="descending"/>
     <xsl:if test="./data[@alias='topic'] = $topic">
        <div class="listing">
          <!-- Some processing here -->
        </div>
     </xsl:if>
</xsl:for-each>

使用：

<xsl:for-each select=
   ".//node [@nodeTypeAlias = 'BlogPost']
                     [data[@alias='topic'] = $topic]
   ">
    <xsl:sort select="ss:dayNumber(@createDate)"
          data-type="number" order="descending"/>
     <xsl:if test="not(position() > 10)">
        <div class="listing">
          <!-- Some processing here -->
        </div>
     </xsl:if>
</xsl:for-each>