Problem with XSL 1.0 <xsl:for-each> and <call-template> - xslt

Question

Please review my code and give me your advise on this:
XML file: content.xml:
<content>
<page id="page-1">
<!-- ... -->
<block-center>
<block-center-row id="block-center-row-1">
<cd>
<title>Empire Burlesque</title>
<artist>Bob Dylan</artist>
<country>USA</country>
<company>Columbia</company>
<price>10.90</price>
<year>1985</year>
</cd>
<cd>
<title>Hide your heart</title>
<artist>Bonnie Tyler</artist>
<country>UK</country>
<company>CBS Records</company>
<price>9.90</price>
<year>1988</year>
</cd>
</block-center-row>
<block-center-row id="block-center-row-2">
<block-center-colunm id="block-center-2-1">
<book>
<title>Book Title1</title>
<author>Book Author1</author>
</book>
<book>
<title>Book Title2</title>
<author>Book Author2</author>
</book>
<book>
<title>Book Title3</title>
<author>Book Author3</author>
</book>
</block-center-colunm>
<block-center-colunm id="block-center-2-2">
<seminar>
<author>Seminar author1</author>
<durable>3</durable>
</seminar>
<seminar>
<author>Seminar author2</author>
<durable>1.5</durable>
</seminar>
<seminar>
<author>Seminar author3</author>
<durable>2</durable>
</seminar>
<seminar>
<author>Seminar author4</author>
<durable>3</durable>
</seminar>
</block-center-colunm>
</block-center-row>
</block-center>
</page>
<!-- ... -->
</content>
XSL file: block-center-1-1.xsl:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template name="block-center-row-1">
<div class="block-center-row">
<h2>My CD Collection</h2>
<table border="1" width="100%">
<tr bgcolor="#9acd32">
<th>Title</th>
<th>Artist</th>
</tr>
<xsl:for-each select="
content/page[#id=$pageId]/block-center/
block-center-row[#id='block-center-row-1']/cd
">
<tr>
<td>
<xsl:value-of select="title" />
</td>
<xsl:choose>
<xsl:when test="price > 10">
<td bgcolor="#ff00ff">
<xsl:value-of select="artist" />
</td>
</xsl:when>
<xsl:when test="price > 9">
<td bgcolor="#cccccc">
<xsl:value-of select="artist" />
</td>
</xsl:when>
<xsl:otherwise>
<td>
<xsl:value-of select="artist" />
</td>
</xsl:otherwise>
</xsl:choose>
</tr>
</xsl:for-each>
</table>
</div>
</xsl:template>
</xsl:stylesheet>
XSL file block-center.xsl:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:import href="block-center-1-1.xsl" />
<xsl:template name="block-center">
<!-- if put here. It work properly -->
<div class="block-center">
<xsl:for-each select="content/page[#id=$pageId]/block-center/block-center-row">
<xsl:choose>
<!-- // I does not work here -->
<xsl:when test="#id='block-center-row-1'">
<xsl:call-template name="block-center-row-1" />
</xsl:when>
</xsl:choose>
</xsl:for-each>
</div>
</xsl:template>
</xsl:stylesheet>
I dont know why It does not work (not out put data) if I call <xsl:call-template> inside <xsl:for-each> loop. Otherwise, It's OK.

Answer 1

I have a few remarks to make. First off, it is a bad idea to make format implications in the XML. Having elements that are called <block-center> or <block-center-colunm> is not only unnecessarily verbose, it will also make your head hurt as soon as their contents is not going to be displayed in a block in the center anymore.
Second, let go of <xsl:call-template> and <xsl:for-each>. They may seem convenient if you have procedural programming background, but they are the wrong choice. Use <xsl:apply-templates> instead, it leads to code that's cleaner and easier to understand.
Now to your XSL. Your second XSL (block-center.xsl) - what does it do? Why do you have two separate XSL files? Also, it is missing a variable or parameter declaration. I've used:
<xsl:variable name="pageId" select="'page-1'" />
for my tests. It also has only one template (<xsl:template name="block-center">) that is never actually being called, so it did not do anything for me. I've added
<xsl:template match="/">
<xsl:call-template name="block-center" />
</xsl:template>
so it would at least do anything.
Your other XSL file (block-center-1-1.xsl) has a for-each loop that is not looking at the right context. You already are in the following context when you enter the template "block-center-row-1":
content/page[#id=$pageId]/block-center/block-center-row
so all you need to do in the for-each loop is:
<xsl:for-each select="cd">
and it will start to output all <cd> nodes.

Answer 2

Many thanks for your euthusiasm!
It's now works properly if I change in block-center-1-1.xsl file
TO
OR