Adaptive tag attribute value replacement allows you to
access data stored in memory.
The following simple example uses the variable and value
tags from the logic tag library to store a value in memory and then
display it in HTML.
<span xmlns:pt='http://www.plumtree.com/xmlschemas/ptui/'>
<pt:logic.variable pt:key="test" pt:value="example text"/>
<pt:logic.value pt:value="$test"/>
</span>
Attribute value replacement can also be used
to display more complicated memory structures. Data objects can contain
multiple name value pairs. The following example creates a data object
with the name and URL of a link, and then displays the name.
<span xmlns:pt='http://www.plumtree.com/xmlschemas/ptui/'>
<pt:logic.data pt:key="testdata" url="http://www.myco.com" name="My company"/>
<pt:logic.value pt:value="$testdata.name"/>
</span>
Attribute value replacement cannot be used with
tags outside the adaptive tag libraries. However, the pt.core.html
tag supports attribute replacement within a tag and allows you to
generate any HTML tag. Use the pt:tag attribute to specify the HTML
tag and list the necessary HTML attributes as XML attributes. All
non-adaptive tag attributes (attributes not prefixed with "pt:") are
included automatically in the outputted HTML tag. For example, the
following code creates an HTML anchor tag using an in-memory value
for the "href" attribute.
<span xmlns:pt='http://www.plumtree.com/xmlschemas/ptui/'>
<pt:core.html pt:tag="a" href="$myurl" title="My title">My link</pt:core.html>
</span>
This code would be transformed to the following
HTML:
<a href="[data stored in the $myurl attribute]" title="My
title">My link</a> .
The example below combines several
different techniques and tags to show how to loop over a data collection
and output HTML. This code outputs several HTML links with lines in
between them.
<span xmlns:pt='http://www.plumtree.com/xmlschemas/ptui/'>
<pt:logic.collection pt:key="testcollection">
<pt:logic.data url="http://www.myco.com" name="My company"/>
<pt:logic.data url="http://www.otherco.com" name="Other company"/>
</pt:logic.collection>
<pt:logic.foreach pt:data="testcollection" pt:var="link">
<pt:core.html pt:tag="a" href="$link.url">
<pt:logic.value pt:value="$link.name"/>
</pt:core.html>
<pt:logic.separator><br><br></pt:logic.separator>
</pt:logic.foreach>
</span>
