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#1
February 11th, 2003, 09:17 PM
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Parameters inside a match sentence for filtering
Is it possible to pass parameters to a match Xpath (is this an Xpath sentence?) sentence?
I am using XML data Islands on IE 6.0, I want to apply the following XSLT to the XML. by the way, the javascript functions are from an article written by Kurt Cagle, XML Pro at this link http://gethelp.devx.com/techtips/xm.../kc090101-1.asp The following sentence works, but shows in the XSLT desired format only the one that fits in the criteria, and shows all the other ones like too ! only that in no format, just firstnames and lastname, no ID <xsl:template match="record[firstname='Daren']"> I have stated 2 parameters wich are <xsl:param name="filterColumn" select="'firstname'"/> <xsl:param name="filterValue" select="'Daren'"/> I would like to use something like this, in order to later be able to pass any filter criteria <xsl:template match="record[$filterColumn=$filterValue]"> but it just doesn't works, the browser gives me the following error <b>Error: Variables may not be used within this expression</b> And another thing, I would like that on the body onload event, I could call the function wich passes the parameters but with a Wildcard, so It would display all the records, currently I do this on body onload <body onload="filterRecords('firstname','Daren')"> Is it possible to do something like <body onload="filterRecords('firstname','*')"> first things first, here bellow I put the entire code, any help will be appreciated <html> <head> <title>Sorting and Filtering Records</title> </head> <!-- <body onload="showRecords('id','ascending')"> --> <body onload="filterRecords('firstname','Daren')"> <script language="Javascript">//<![CDATA[ function call(xslIsland,xmlIsland){ var xslDoc=new ActiveXObject("MSXML2.FreeThreadedDOMDocument"); var rsltDoc=new ActiveXObject("MSXML2.FreeThreadedDOMDocument"); var xslTemplate=new ActiveXObject("MSXML2.XSLTemplate"); xslDoc.async = false; rsltDoc.async = false; xslDoc.load(xslIsland.XMLDocument); xslTemplate.stylesheet=xslDoc; var xslProc=xslTemplate.createProcessor(); xslProc.input=xmlIsland.XMLDocument; xslProc.output=rsltDoc; if (arguments.length >2 && arguments.length % 2 == 0){ for (var i=0; i<Math.floor((arguments.length)/2)-1; i++){ paramName=arguments[2*i+2]; paramValue=arguments[2*i+3]; xslProc.addParameter(paramName,paramValue); } } xslProc.transform(); return rsltDoc; } function showRecords(sortKey,sortOrder){ var htmlDoc= call(_ShowRecords,records,"sortKey", sortKey,"sortOrder",sortOrder); window.container.innerHTML=htmlDoc.xml; } function filterRecords(filterColumn,filterValue){ var htmlDoc= call(_FilterRecords,records,"filterColumn", filterColumn,"filterValue",filterValue); window.container.innerHTML=htmlDoc.xml; } //]]></script> Filters: <button onclick="filterRecords('firstname','Daren')">First Name = Daren</button><hr> Sorting: <button onclick="showRecords('firstname',SortOrderList.value)">First Name</button> <button onclick="showRecords('lastname',SortOrderList.value)">Last Name</button> <button onclick= "showRecords('id',SortOrderList.value)">User ID</button> <select name="SortOrderList" id="SortOrderList" value="ascending"> <option value="ascending" selected="selected">Ascending</option> <option value="descending">Descending</option> </select><hr> <div id="container"></div> <xml id="records"> <records> <record id="101"> <firstname>Kurt</firstname> <lastname>Cagle</lastname> </record> <record id="102"> <firstname>Aleria</firstname> <lastname>Delamare</lastname> </record> <record id="103"> <firstname>Steven</firstname> <lastname>Dallas</lastname> </record> <record id="104"> <firstname>Opus</firstname> <lastname>Penguin</lastname> </record> <record id="105"> <firstname>Gina</firstname> <lastname>Alacava</lastname> </record> <record id="106"> <firstname>Dean</firstname> <lastname>Stanton</lastname> </record> <record id="107"> <firstname>Corey</firstname> <lastname>Johnson</lastname> </record> <record id="108"> <firstname>Edgar</firstname> <lastname>Marseiz</lastname> </record> <record id="109"> <firstname>Daren</firstname> <lastname>Malecevitz</lastname> </record> <record id="110"> <firstname>Lori</firstname> <lastname>Lemaris</lastname> </record> </records> </xml> <xml id="_ShowRecords"> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:param name="sortKey" select="'firstname'"/> <xsl:param name="sortOrder" select="'ascending'"/> <xsl:template match="/"> <xsl:apply-templates select="records"/> </xsl:template> <xsl:template match="records"> <div> <xsl:apply-templates select="record"> <xsl:sort select="*[name(.)=$sortKey]|@*[name(.)=$sortKey]" order="{$sortOrder}"/> </xsl:apply-templates> </div> </xsl:template> <xsl:template match="record"> <div>(<xsl:value-of select="@id"/>) <xsl:value-of select="firstname"/><xsl:text> </xsl:text><xsl:value-of select="lastname"/></div> </xsl:template> </xsl:stylesheet> </xml> <xml id="_FilterRecords"> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:param name="filterColumn" select="'firstname'"/> <xsl:param name="filterValue" select="'Daren'"/> <xsl:template match="/"> <xsl:apply-templates select="records"/> </xsl:template> <xsl:template match="records"> <div> <xsl:apply-templates select="record"> </xsl:apply-templates> </div> </xsl:template> <!-- <xsl:template match="record[firstname='Daren']"> this one works, but it also displays all the other data without format, only applies the format for the one that fits the match sentence <xsl:template match="record['{$filterColumn}'='Daren']"> This one above this line, it just doesn't work at all --> <xsl:template match="record[$filterColumn=$filterValue]"> <div>(<xsl:value-of select="@id"/>) <xsl:value-of select="firstname"/><xsl:text> </xsl:text><xsl:value-of select="lastname"/> </div> </xsl:template> </xsl:stylesheet> </xml> </body> </html> Last edited by esosa : February 11th, 2003 at 09:24 PM.
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#2
February 12th, 2003, 02:05 PM
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I partially found a solution, the thing is that you cannot put a filter in the match sentence, but you can put it on the apply template part
like this <xsl:template match="records"> <div> <xsl:apply-templates select="record[firstname=$filterValue]"> </xsl:apply-templates> </div> </xsl:template> Now the problem is that I don't know how to pass the $filterColumn parameter so it could look like this <xsl:apply-templates select="record[$filterColumn=$filterValue]"> When I do that, the browser reports no errors, but simply does not show any records here bellow I put the code with the filterColumn hardcoded as firstname. Again, any help will be appreciated <xml id="_FilterRecords"> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:param name="filterColumn" select="'firstname'"/> <xsl:param name="filterValue" select="'Daren'"/> <xsl:template match="/"> <xsl:apply-templates select="records"/> </xsl:template> <xsl:template match="records"> <div> <xsl:apply-templates select="record[firstname=$filterValue]"> </xsl:apply-templates> </div> </xsl:template> <xsl:template match="record"> <div>(<xsl:value-of select="@id"/>) <xsl:value-of select="firstname"/><xsl:text> </xsl:text><xsl:value-of select="lastname"/> </div> </xsl:template> </xsl:stylesheet> </xml>
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#3
February 14th, 2003, 08:27 PM
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Somebody Anonymous kindly posted a solution to my question, here I post it.
Hi Edgar The select you've entered will always be false since you compare two variables, not the contents of the nodes you are looking for. This is an altered version that does the jobb <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:param name="wichColumn">firstname</xsl:param> <xsl:param name="filterValue">Kurt</xsl:param> <xsl:template match="/"> <!-- changed, xml is the element under root --> <xsl:apply-templates select="xml/records"/> </xsl:template> <xsl:template match="records"> <div> <xsl:apply-templates select="record[*[name()=$wichColumn and text()=$filterValue]]"/> </div> </xsl:template> <xsl:template match="record"> <div>(<xsl:value-of select="@id"/>) <xsl:value-of select="firstname"/> <xsl:text/> <xsl:value-of select="lastname"/> </div> </xsl:template> </xsl:stylesheet> Oh, I also removed the starting <xml id... from the stylesheet. Regards // Greger
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