Conditional rendering in "Segments" - spark-view-engine

Question

So I have the following spark partial
<default extension="null" footer="null" header="null" type="string"/>
<div class="mod ${extension}?{extension != null}">
<div class="inner">
<div class="hd ${header}?{header != null}">
<render segment="hd" />
</div>
<div class="bd">
<render />
</div>
<div class="ft ${footer}?{footer != null}">
<render segment="ft" />
</div>
</div>
</div>
I think that segments are really cool, but I only want it render if I use it. Maybe something like this:
<default extension="null" footer="null" header="null" type="string"/>
<div class="mod ${extension}?{extension != null}">
<div class="inner">
<render segment="hd">
<div class="hd ${header}?{header != null}">
<!-- write content here -->
</div>
</render>
<div class="bd">
<render />
</div>
<render segment="ft">
<div class="ft ${footer}?{footer!= null}">
<!-- write content here -->
</div>
</render>
</div>
</div>
Usage like:
<mod>
<p> My content </p>
<segment name="hd">
<h1> My Header </h1>
</segment>
</mod>
Basically I'm trying to get spark to only render segments that are used. In this instance I wouldn't want the <div class="ft" /> to render and I would want the <h1> wrapped by the <div class="hd">

Answer 1

Does something like this work for you:
<default extension="null" footer="null" header="null" type="string"/>
<div class="mod ${extension}?{extension != null}">
<div class="inner">
<div class="hd ${header}" if="header != null">
<render segment="hd" />
</div>
<div class="bd">
<render />
</div>
<div class="ft ${footer}" if="footer != null">
<render segment="ft" />
</div>
</div>
</div>
This would have the effect of not rendering the divs at all if header or footer was null. You could do the same for extension of course but I assumed you always want to at least render the body so I left it the way you had it. You can put an if="condition" on any node in Spark.
Am I missing something here?
Cheers,
Rob