I have the following XML file:
<phonebook>
<departments>
<department id="1" parent="" title="Rabit Hole" address="" email="" index=""/>
<department id="2" parent="" title="Big Pond" address="" email="" index=""/>
</departments>
<employees>
<employee id="1" fname="Daffy" lname="Duck" title="Admin" email="daffy.duck#example.com" department="2" room="" />
<employee id="2" fname="Bugs" lname="Bunny" title="Programmer" email="bugs.bunny#example.com" department="1" room="" />
</employees>
</phonebook>
When displaying it, I want to show the contact details for an employee as well as the title of the department where he works. Here's what I've got in the template:
<xsl:for-each select="phonebook/employees/employee">
<xsl:sort select="#lname" />
<tr>
<td>
<span class="lname"><xsl:value-of select="#lname"/></span>
<xsl:text> </xsl:text>
<span class="fname"><xsl:value-of select="#fname"/></span>
</td>
<td><xsl:value-of select="#title"/></td>
<td>
<xsl:value-of select="/phonebook/departments/department[#id='{#department}']/#title"/>
</td>
<td><xsl:value-of select="#email"/></td>
</tr>
</xsl:for-each>
The problem is that the following rule doesn't seem to work:
<xsl:value-of select="/phonebook/departments/department[#id='{#department}']/#title"/>
I guess this is because the XSLT engine looks for the department property in the department element, and not in the employee element. However, I don't have an idea how to fix it. Could anyone give me a hint on that?
Lots of ways, but a nice reusable one is to use a key.
Definition:
<xsl:key name="dept" match="/phonebook/departments/department" use="#id"/>
Usage (where the current node is an <employee>:
<xsl:value-of select="key('dept', #department)/#title"/>
The {} in the select are not supported, I prefer using a variable, but anothor option would be using current(). But I would probably just use something like:
<xsl:variable name="departmentId" select="#department" />
<xsl:value-of select="/phonebook/departments/department[#id=$departmentId]/#title"/>
Related
I am trying to implement a logic which would do choosing a value if it matches the condition. The problem is, if my list contains more elements than one, it wouldn't display the value which matches the condition, but only the first one. Could you provide some advice? thanks. I need this to implement multiple filtering by conditions. Meaning that in this for-each I would display only books with year 2008, but in another table I could also use 2010 from the list of years. The below example is a part of the template for one table which uses 2008, but I will have multiple tables where I would filter books by 2010 as well.
XSL:
<xsl:for-each select="years">
<xsl:choose>
<xsl:when test="year=2008">
<td class="year"><xsl:value-of select="year"/></td>
</xsl:when>
</xsl:choose>
</xsl:for-each>
XML:
<book>
<title>Professional ASP.NET 4 in C# and VB</title>
<author>Bill Evjen, Scott Hanselman, Devin Rader</author>
<country>USA</country>
<price>580</price>
<years>
<year>2010</year>
<year>2008</year>
</years>
</book>
This one would populate 2010 into my HTML, not 2008 as I would expect. Is this doable at all?
Update:
I've tried this approach for example to filter against multiple conditions separately:
<xsl:for-each select="library/book">
<tr>
<td class="filterTd title"><xsl:value-of select="title"/></td>
<td class="filterTd author"><xsl:value-of select="author"/></td>
<td class="filterTd price"><xsl:value-of select="price"/></td>
<xsl:for-each select="years/year[.2008]">
<td class="year">
<xsl:value-of select="."/>
</td>
</xsl:for-each>
<xsl:for-each select="years/year[.2010]">
<td class="year">
<xsl:value-of select="."/>
</td>
</xsl:for-each>
</tr>
</xsl:for-each>
</table>
This would not populate any td at all in my case..
If you only want to display books for a specific year, you would put a condition in the xsl:for-each that selects the book
<xsl:for-each select="library/book[years/year=$year]">
Where $year is a variable (or parameter) containing the year you want
Do note, if you know you are dealing with a specific year, then you don't actually need to do <xsl:value-of select="year" />, you can just output the year value you are working with.
Try this XSLT
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="html" indent="yes" />
<xsl:template match="/">
<xsl:call-template name="table">
<xsl:with-param name="year" select="2008" />
</xsl:call-template>
</xsl:template>
<xsl:template name="table">
<xsl:param name="year" />
<table>
<xsl:for-each select="library/book[years/year=$year]">
<tr>
<td class="filterTd title"><xsl:value-of select="title"/></td>
<td class="filterTd author"><xsl:value-of select="author"/></td>
<td class="filterTd price"><xsl:value-of select="price"/></td>
<td class="year">
<xsl:value-of select="$year"/>
</td>
</tr>
</xsl:for-each>
</table>
</xsl:template>
</xsl:stylesheet>
Note, you could also use a key here to look up books by year
<xsl:key name="booksByYear" match="book" use="years/year" />
Then, the xsl:for-each to select books, looks like this:
<xsl:for-each select="key('booksByYear', $year)">
Im doing an assignment for University (so im new to XSL coding) in making a quasi ecommerce site, and will provide as much detail as i can so it makes sense.
Sample XML Data:
<Items>
<Item>
<ItemID>50001</ItemID>
<ItemName>Samsung Galaxy S4</ItemName>
<ItemPrice>629</ItemPrice>
<ItemQty>14</ItemQty>
<ItemDesc>4G Mobile</ItemDesc>
<QtyHold>0</QtyHold>
<QtySold>1</QtySold>
</Item>
<Item>
<ItemID>50002</ItemID>
<ItemName>Samsung Galaxy S5</ItemName>
<ItemPrice>779</ItemPrice>
<ItemQty>21</ItemQty>
<ItemDesc>4G Mobile</ItemDesc>
<QtyHold>0</QtyHold>
<QtySold>1</QtySold>
</Item>
</Items>
Website
So the process is, when a person clicks 'Add to Cart' in the top Table, the ItemQty is decreased by 1 on the ItemQty in the XML, while it increases by 1 in the QtyHold in the XML. (QtyHold represents what has been added to the shopping Cart. Thus if QtyHold is >0 then its been added to the Cart)
My problem refers to the 2nd Table (code below), where the Total figure works - only if dealing with 1 Item. Thus, if Item Number '50001' is added a 2nd time, the Total wont change.
<xsl:template match="/">
<fieldset>
<legend>Shopping Cart</legend>
<BR />
<table border="1" id="CartTable" align="center">
<tr><th>Item Number</th>
<th>Price</th>
<th>Quantity</th>
<th>Remove</th></tr>
<xsl:for-each select="/Items/Item[QtyHold > 0]">
<tr><td><xsl:value-of select="ItemID"/></td>
<td>$<xsl:value-of select="ItemPrice"/></td>
<td><xsl:value-of select="QtyHold"/></td>
<td><button onclick="addtoCart({ItemID}, 'Remove')">Remove from Cart</button></td> </tr>
</xsl:for-each>
<tr><td ALIGN="center" COLSPAN="3">Total:</td><td>$<xsl:value-of select="sum(//Item[QtyHold >0]/ItemPrice)"/></td></tr>
</table>
<BR />
<button onclick="Purchase()" class="submit_btn float_l">Confirm Purchase</button>
<button onclick="CancelOrder()" class="submit_btn float_r">Cancel Order</button>
</fieldset>
</xsl:template>
</xsl:stylesheet>
So what needs to happen is within the following code, while it checks if the QtyHold is greater than 0 (which would mean its in the shopping Cart) & to sum these values, it also needs to multiply QtyHold & ItemPrice.
<xsl:value-of select="sum(//Item[QtyHold >0]/ItemPrice)"/>
I tried many variations of Code like this below... but can't seem to make anything work.
select="sum(//Item[QtyHold >0]/ItemPrice)/(QtyHold*ItemPrice"/>
If you are using XSLT 2.0, the expression you could use would be this:
<xsl:value-of select="sum(//Item[QtyHold >0]/(ItemPrice * QtyHold))"/>
However, in XSLT 1.0 that is not allowed. Instead, you could achieve the result you need with an extension function. In particular the "node-set" function. First you would create a variable like this, in which you construct new nodes holding each item total
<xsl:variable name="itemTotals">
<xsl:for-each select="//Item[QtyHold >0]">
<total>
<xsl:value-of select="ItemPrice * QtyHold" />
</total>
</xsl:for-each>
</xsl:variable>
Ideally, you would like to do sum($itemTotals/total), but this won't work, because itemTotals is a "Result Tree Fragment" and the sum function only accepts a node-set. So you use the node-set extension function to convert it. First declare this namespace in your XSLT...
xmlns:exsl="http://exslt.org/common"
Then, your sum function would look like this:
<xsl:value-of select="sum(exsl:node-set($itemTotals)/total)"/>
Alternatively, if you couldn't even use an extension function, you could use the "following-sibling" approach, to select each Item at a time, and keep a running total. So, you would have a template like this:
<xsl:template match="Item" mode="sum">
<xsl:param name="runningTotal" select="0" />
<xsl:variable name="newTotal" select="$runningTotal + ItemPrice * QtyHold" />
<xsl:variable name="nextItem" select="following-sibling::Item[1]" />
<xsl:choose>
<xsl:when test="$nextItem">
<xsl:apply-templates select="$nextItem" mode="sum">
<xsl:with-param name="runningTotal" select="$newTotal" />
</xsl:apply-templates>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$newTotal" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
And to call it, to get the sum, you just start off by selecting the first node
<xsl:apply-templates select="(//Item)[1]" mode="sum" />
Try this XSLT which demonstrates the various approaches
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"
xmlns:exsl="http://exslt.org/common"
exclude-result-prefixes="exsl">
<xsl:output method="html" indent="yes" />
<xsl:template match="/">
<table border="1" id="CartTable" align="center">
<tr><th>Item Number</th>
<th>Price</th>
<th>Quantity</th>
</tr>
<xsl:for-each select="/Items/Item[QtyHold > 0]">
<tr>
<td><xsl:value-of select="ItemID"/></td>
<td>$<xsl:value-of select="ItemPrice"/></td>
<td><xsl:value-of select="QtyHold"/></td>
</tr>
</xsl:for-each>
<tr>
<td ALIGN="center" COLSPAN="2">Total:</td>
<xsl:variable name="itemTotals">
<xsl:for-each select="//Item[QtyHold >0]">
<total>
<xsl:value-of select="ItemPrice * QtyHold" />
</total>
</xsl:for-each>
</xsl:variable>
<td>
<!-- XSLT 2.0 only: $<xsl:value-of select="sum(//Item[QtyHold >0]/(ItemPrice * QtyHold))"/>-->
$<xsl:value-of select="sum(exsl:node-set($itemTotals)/total)"/>
$<xsl:apply-templates select="(//Item)[1]" mode="sum" />
</td>
</tr>
</table>
</xsl:template>
<xsl:template match="Item" mode="sum">
<xsl:param name="runningTotal" select="0" />
<xsl:variable name="newTotal" select="$runningTotal + ItemPrice * QtyHold" />
<xsl:variable name="nextItem" select="following-sibling::Item[1]" />
<xsl:choose>
<xsl:when test="$nextItem">
<xsl:apply-templates select="$nextItem" mode="sum">
<xsl:with-param name="runningTotal" select="$newTotal" />
</xsl:apply-templates>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$newTotal" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
As a final thought, why don't you just a new Total element to each Item element in your XML. Initially, it would be set to 0, like QtyHold. Then, when you increment QtyHold by 1, by what ever process you do, you can also increment Total by the amount held in ItemPrice. That way, you can just sum this Total node to get the overall total, without the need for extension functions or recursive templates.
I am beginner for XSLT, currently I am trying to display list of <department> in each <company> node.
Below is my XML
<employee_data>
<employeedetails id="1">
<company id="1">
<companyname>AOL</companyname>
<department>IT</department>
</company>
<employeename>Patrick</employeename>
<employeedesg>Software Engineer</employeedesg>
<employeesalary>18000</employeesalary>
<employeedoj>10/03/2015</employeedoj>
</employeedetails>
..... similar sets......
..... similar sets......
<employeedetails id="10">
<company id="1">
<companyname>AOL</companyname>
<department>HR</department>
</company>
<employeename>Patricia</employeename>
<employeedesg>HR Assistant</employeedesg>
<employeesalary>18000</employeesalary>
<employeedoj>10/03/2015</employeedoj>
</employeedetails>
</employee_data>
I have written the below XSLT to fetch only company names, but I want to display all the departments from the various companies.
XSLT:
<xsl:key name="companyname" match="/employee_data/employeedetails/company/companyname" use="."/>
<xsl:for-each select="/employee_data/employeedetails/company/companyname[generate-id() = generate-id(key('companyname',.)[1])]">
<tr>
<td>
<xsl:value-of select="../#id"/>
</td>
<td>
<xsl:value-of select="."/>
</td>
</tr>
</xsl:for-each>
If you want to get the department nodes for a company simply use the same key that you have used in the grouping of the companies
<xsl:for-each select="key('companyname',.)">
<xsl:value-of select="../department" />
<br />
</xsl:for-each>
As a side note, you can actually simplify your key. You don't actually need to specify the full path to the company element, just the name will do
<xsl:key name="companyname" match="company" use="companyname"/>
You would only need to consider using a path if there were other company elements at a different level in the XML hierarchy that you didn't want included.
Also note I am matching company and not companyname simply to avoid using the .. parent axis.
Try this XSLT
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="html" />
<xsl:key name="companyname" match="company" use="companyname"/>
<xsl:template match="/">
<xsl:for-each select="/employee_data/employeedetails/company[generate-id() = generate-id(key('companyname', companyname)[1])]">
<tr>
<td>
<xsl:value-of select="#id"/>
</td>
<td>
<xsl:apply-templates select="key('companyname', companyname)" />
</td>
</tr>
</xsl:for-each>
</xsl:template>
<xsl:template match="company">
<xsl:value-of select="department" />
<br />
</xsl:template>
</xsl:stylesheet>
I have an XML file with a list of items with two different qualities and I need to create an HTML output that list the items in the two categories with a numbering sequence that start with a on both. I cannot find a solution. Here are the files I created so far:
XML
<?xml version="1.0" encoding="UTF-8"?>
<refrigerator>
<item>
<quality>Good</quality>
<item_name>eggs</item_name>
</item>
<item>
<quality>Good</quality>
<item_name>chess</item_name>
</item>
<item>
<quality>Good</quality>
<item_name>soda</item_name>
</item>
<item>
<quality>Bad</quality>
<item_name>chicken meat</item_name>
</item>
<item>
<quality>Bad</quality>
<item_name>spinach</item_name>
</item>
<item>
<quality>Bad</quality>
<item_name>potatoes</item_name>
</item>
</refrigerator>
XSL
<table width="100%" border="1">
<tr>
<td>
<strong>These are the good items in the refrigerator/strong>
<xsl:for-each select="refrigerator/item">
<xsl:if test="quality = 'Good'">
<strong><xsl:number format="a) " value="position()"/></strong>
<xsl:value-of select="item_name"/>
</xsl:if>
</xsl:for-each>
, <strong>and these are the bad ones/strong>
<xsl:for-each select="refrigerator/item">
<xsl:if test="quality = 'Bad'">
<strong><xsl:number format="a) " value="position()"/></strong>
<xsl:value-of select="item_name"/>
</xsl:if>
</xsl:for-each>
. Some more text over here.</td>
</tr>
</table>
HTML
These are the good items in the refrigerator:a) eggs b) chess c) soda , and these are the bad ones:d) chicken meat e) spinach f) potatoes . Some more text over here.
OUTPUT needed
These are the good items in the refrigerator:a) eggs b) chess c) soda , and these are the bad ones:a) chicken meat b) spinach c) potatoes . Some more text over here.
Any help is greatly appreciate it.
Regards.
A.
Your problem is that position() is sensitive to exactly what list of nodes you're currently for-eaching over. Instead of
<xsl:for-each select="refrigerator/item">
<xsl:if test="quality = 'Good'">
put the test in the for-each select expression
<xsl:for-each select="refrigerator/item[quality = 'Good']">
and similarly for the "Bad" case.
As Tomalak suggests you can save repeating the same code in the two cases by moving it to a separate template and using apply-templates instead of for-each.
Either: Use <xsl:for-each> correctly.
<xsl:template match="refrigerator">
<table width="100%" border="1">
<tr>
<td>
<strong>These are the good items in the refrigerator</strong>
<xsl:for-each select="item[quality = 'Good']">
<strong><xsl:number format="a) " value="position()"/></strong>
<xsl:value-of select="item_name" />
</xsl:for-each>
<xsl:text>, <xsl:text>
<strong>and these are the bad ones</strong>
<xsl:for-each select="item[quality = 'Bad']">
<strong><xsl:number format="a) " value="position()"/></strong>
<xsl:value-of select="item_name" />
</xsl:for-each>
<xsl:text>. Some more text over here.</xsl:text>
</td>
</tr>
</table>
</xsl:template>
Or, don't repeat yourself and don't use <xsl:for-each> at all.
<xsl:template match="refrigerator">
<table width="100%" border="1">
<tr>
<td>
<strong>These are the good items in the refrigerator</strong>
<xsl:apply-templates select="item[quality = 'Good']" mode="numbered" />
<xsl:text>, <xsl:text>
<strong>and these are the bad ones</strong>
<xsl:apply-templates select="item[quality = 'Bad']" mode="numbered" />
<xsl:text>. Some more text over here.</xsl:text>
</td>
</tr>
</table>
</xsl:template>
<xsl:template match="item" mode="numbered">
<div>
<strong><xsl:number format="a) " value="position()"/></strong>
<xsl:value-of select="item_name" />
</div>
</xsl:template>
Or, and this is even more preferred, use HTML numbered lists. Output <ol> and <li> and style them via CSS, instead of hard-coding list numbers in your output.
I have a problem when parsing dynamic xml data into a html table. The XML is as follow.
<results>
<result id="1" desc="Voltage and current">
<measure desc="VOLT" value="1.0" />
<measure desc="AMPERE" value="2.0" />
</result>
<result id="2" desc="Current-1">
<measure desc="AMPERE" value="5.0" />
</result>
</results>
from which I would like a html table like:
ID DESC VOLT AMPERE
1 Voltage and current 1.0 2.0
2 Current-1 5.0
Notice the empty cell at second voltage column. ID and DESC is taken from result/#id and result/#desc and the rest of the column names should come from measure/#desc
No column name should be duplicate, I managed to code that far, but when I start adding my measures I need to match each measure/#desc to correct column in the table. I tried double nested loops to first match all unique column names, and then loop all measures again to match the column header. But the xslt parser threw a NPE on me!
Sorry that I can't show any code as it is on a non-connected computer.
I've browsed so many Q/A here on SO but to no help for my specific problem.
Thanks in advance
Note: I am able to change the XML format in any way to make parsing easier if anyone come up with a neater format.
If you are using XSLT1.0, you can use a technique called 'Muenchian' grouping to get the distinct measure descriptions, which will form the basis of your head row, and also be used to output the values of each row.
Firstly, you define a key to look up measure elements by their #desc attribute
<xsl:key name="measures" match="measure" use="#desc" />
Then, to get the distinct measure descriptions you can iterate over the measure elements that appear first in the group for their given #desc attribute
<xsl:apply-templates
select="result/measure[generate-id() = generate-id(key('measures', #desc)[1])]"
mode="header" />
Then, for your header, you would simply have a template to output the description.
<xsl:template match="measure" mode="header">
<th>
<xsl:value-of select="#desc" />
</th>
</xsl:template>
For each result row, would do a similar thing, and iterate over all distinct measure values, but the only difference is you would have to pass in the current result element as a parameter, for later use.
<xsl:apply-templates
select="/results/result/measure[generate-id() = generate-id(key('measures', #desc)[1])]"
mode="data">
<xsl:with-param name="result" select="." />
</xsl:apply-templates>
Then, in the template that matched the measure this time, you could access the measure within the result element with a matching #desc attribute (and id there is no such attribute, nothing is output for the cell)
<xsl:template match="measure" mode="data">
<xsl:param name="result" />
<td>
<xsl:value-of select="$result/measure[#desc = current()/#desc]/#value" />
</td>
</xsl:template>
Here is the full XSLT
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:key name="measures" match="measure" use="#desc" />
<xsl:template match="/results">
<table>
<tr>
<th>ID</th>
<th>DESC</th>
<xsl:apply-templates select="result/measure[generate-id() = generate-id(key('measures', #desc)[1])]" mode="header" />
</tr>
<xsl:apply-templates select="result" />
</table>
</xsl:template>
<xsl:template match="result">
<tr>
<td><xsl:value-of select="#id" /></td>
<td><xsl:value-of select="#desc" /></td>
<xsl:apply-templates select="/results/result/measure[generate-id() = generate-id(key('measures', #desc)[1])]" mode="data">
<xsl:with-param name="result" select="." />
</xsl:apply-templates>
</tr>
</xsl:template>
<xsl:template match="measure" mode="header">
<th>
<xsl:value-of select="#desc" />
</th>
</xsl:template>
<xsl:template match="measure" mode="data">
<xsl:param name="result" />
<td>
<xsl:value-of select="$result/measure[#desc = current()/#desc]/#value" />
</td>
</xsl:template>
</xsl:stylesheet>
Note the use of the mode attributes because you have two templates matching the measure element, which function in different ways.
When applied to your input XML, the following is output
<table>
<tr>
<th>ID</th>
<th>DESC</th>
<th>VOLT</th>
<th>AMPERE</th>
</tr>
<tr>
<td>1</td>
<td>Voltage and current</td>
<td>1.0</td>
<td>2.0</td>
</tr>
<tr>
<td>2</td>
<td>Current-1</td>
<td/>
<td>5.0</td>
</tr>
</table>