ok weird it posted twice - See this post

http://our.umbraco.org/forum/developers/xslt/7578-Typical-Example---How-Annoying-Is-XSLT

Try this:

        <xsl:if test="string($latestposts) != ''">

        <xsl:for-each select="umbraco.library:GetXmlNodeById($latestposts)//node [@nodeTypeAlias = 'BlogPost']">

HTH,

Peter

Explanation:

GetXmlNodeById expects an integer. When saving the xslt, umbraco checks against the root-node. This probably doesn't make your $latestposts being filled correctly, thus not being an integer. This results in the error you recieved.

In your original if-statement, you check against the full path. This doesn't make much sense since the error you got is caused by GetXmlNodeByID and not by the for-each. So, what you actually did was causing the same error twice ;-)

Hope this clarifies a bit,

Peter

Hey Peter

Thanks for posting, I'm afraid this isn't the cure - I have tried this and get the same error??  Here is the full XSLT

   <xsl:variable name="numberOfPosts" select="4"/>
    <xsl:variable name="latestposts" select="/macro/blognode"/>

    <xsl:template match="/">

    <xsl:if test="string($latestposts) != ''">
    <xsl:for-each select="umbraco.library:GetXmlNodeById($latestposts)//node [@nodeTypeAlias = 'BlogPost']">
        <xsl:sort select="@createDate" order="descending" />
        <xsl:if test="position() &lt; $numberOfPosts">
          <xsl:call-template name="showpost">
            <xsl:with-param name="post" select="."/>
          </xsl:call-template>
        </xsl:if>
        </xsl:for-each>
    </xsl:if>

    </xsl:template>

  <xsl:template name="showpost">
    <xsl:param name="post"/>

    <div class="hentry post publish author-{$post/@writername} tag-boat tag-lake {umbraco.library:FormatDateTime($post/@updateDate, 'yYYYY mMM')} y2008 m10 d17 h04">
      <h1 class="entry-title" id="post-{$post/@id}">
    <a href="{umbraco.library:NiceUrl($post/@id)}" title="Permalink to {$post/@nodeName}"><xsl:value-of select="$post/@nodeName"/></a>
      </h1>

      <div class="entry-date">
        <abbr class="published" title="umbraco.library:ShortDate($post/@updateDate">
          <xsl:value-of select="umbraco.library:LongDate($post/@updateDate)"/>
        </abbr>
      </div>


      <div class="entry-content">
    <p><xsl:value-of select="umbraco.library:TruncateString(umbraco.library:StripHtml($post/data [@alias = 'bodyText']), 450, '............')" disable-output-escaping="yes" /></p>
      </div>

      <div class="entry-meta">

        <span class="author vcard">
          By: <span class="fn n">
            <xsl:value-of select="$post/@creatorName"/>
          </span>
        </span>
        <span class="meta-sep"> |</span>
        <span class="tag-links">
          <xsl:variable name="tags" select="tagsLib:getTagsFromNode(@id)" />
          <xsl:choose>
            <xsl:when test="count($tags/tags/tag) = 0">
              Not tagged
            </xsl:when>
            <xsl:otherwise>
              Tagged:
              <xsl:for-each select="$tags/tags/tag">
                <a href="{umbraco.library:NiceUrl($currentPage/ancestor-or-self::node [@nodeTypeAlias = 'Blog']/@id)}?filterby={.}" rel="tag">
                  <xsl:value-of select="."/>
                </a>
                <xsl:if test="position() != last()">, </xsl:if>
              </xsl:for-each>
            </xsl:otherwise>
          </xsl:choose>
        </span>
        <span class="meta-sep"> | </span>
        <xsl:variable name="numberofcomments" select="count(BlogLibrary:GetCommentsForPost($post/@id)//comment)"/>
        <span class="comments-link">
          <xsl:choose>
            <xsl:when test="$numberofcomments = 0">
              <xsl:choose>
                <xsl:when test="string($post/data [@alias = 'closeComments']) = '1'">
                  Comments closed
                </xsl:when>
                <xsl:otherwise>
                  <a href="{umbraco.library:NiceUrl(@id)}#comments">Leave comment</a>
                </xsl:otherwise>
              </xsl:choose>
            </xsl:when>
            <xsl:when test="$numberofcomments = 1">
              <a href="{umbraco.library:NiceUrl(@id)}#comments">1 comment</a>
            </xsl:when>
            <xsl:otherwise>
              <a href="{umbraco.library:NiceUrl(@id)}#comments">
                <xsl:value-of select="$numberofcomments"/> comments
              </a>
            </xsl:otherwise>
          </xsl:choose>
        </span>
      </div>

    </div>

Still same error?  As I say if I do a value-of/copy-of I get the results fine?

Are you able to post the full XSLT?

Hi Lee

Just a quick idea. Are you sure that you are getting the right node-id from the macro parameter?

I usually use:

<xsl:variable name="latestposts" select="macro/blognode"/>

Instead of this:

<xsl:variable name="latestposts" select="/macro/blognode"/>

without the / in the front.

Maybe this has nothing to do with it, but just to make sure, try to print the $latestposts in a <textarea> and see if the right value is in the variable.

This is a wild shot, so like dillorscroft says, could you post your full XSLT-file? I think that this could help. Otherwise, try using the umbdebugshowtrace=true parameter in the URL and see if you are getting any errors.

/Kim A

Lee,

There are a few NiceUrl(@id) in your template and a tagsLib:getTagsFromNode(@id). I think they should be replaced with NiceUrl($post/@id).

Could you try that and report back?

Peter

PS: if you try Chriztian's example, if that works, you know the fault is in the template. And I might be right then.

Ok thanks to Peter it was in the template :)  

It was in the for each section of the tags, here

<a href="{umbraco.library:NiceUrl($currentPage/ancestor-or-self::node [@nodeTypeAlias = 'Blog']/@id)}?filterby={.}" rel="tag">

I changed it to

<a href="{umbraco.library:NiceUrl(umbraco.library:GetXmlNodeById($latestposts)/@id)}?filterby={.}" rel="tag">

And we are in business :)

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