How to display the first tab in my Wordpress loop? - wordpress

Question

I'm working with Wordpress and Foundation Tabs.
Objective:
To display Wordpress posts from a specific category in vertical Foundation tabs.
I currently have a static version displayed here:
http://www.aos-engineering.com (Under Projects)
Problem:
On the page load, the first tab displayed is empty. However, when you click through the tabs, they display correctly.
Question
How do I display the fist tab item on the page load?
Here is a test page displaying the problem:
http://www.aos-engineering.com/test/
Code
<div class="full-width" id="projects">
<div class="row">
<div class="small-4 medium-3 large-3 columns">
<dl class="tabs vertical profile-tabs" data-tab>
<?php
$displayposts = new WP_Query();
$displayposts->query('category_name=Projects');
while ($displayposts->have_posts()) : $displayposts->the_post();
$tab_number = $displayposts->current_post + 1;
?>
<dd><?php the_title(); ?></dd>
<?php endwhile; ?>
</dl>
</div>
<div class="small-8 medium-9 large-9 columns">
<div class="tabs-head">Projects</div>
<div class="tabs-content">
<?php
while ($displayposts->have_posts()) : $displayposts->the_post();
$tab_number = $displayposts->current_post + 1;
?>
<div class="content" id="tab<?php echo $tab_number;?>">
<h2><?php the_title(); ?></h2>
<div class="row">
<div class="medium-9 large-9 columns">
<?php the_post_thumbnail(); ?>
<p><small><?php the_field('img_caption'); ?></small></p>
</div>
<div class="medium-3 large-3 columns">
<?php the_content(); ?>
</div>
</div>
</div>
<?php endwhile; ?>
</div>
</div>
</div>
Please let me know if I can provide more information. Thank you in advance.

Answer 1

You need to have your code add the class active to the .tabs > dl and the .tabs-content > div you want displayed on page load.
Add this to the two lines after $tab_number = ... to have the first tab be the active tab on load:
$active_class = (1 == $tab_number) ? 'active' : '';
Then in the output:
<dd class="<?php echo $active_class;?>" ><a href=...
<div class="content <?php echo $active_class;?>"...
See the Foundation Tabs documentation for more details.

Answer 2

Hat tip CPILKO for the solution.
Here is how to display Wordpress posts from a specific category in vertical Foundation tabs.
To display your posts, simply add your category name
'category_name=YourCategoryName'
Solution
<div class="full-width" id="projects">
<div class="row">
<div class="small-4 medium-3 large-3 columns">
<dl class="tabs vertical profile-tabs" data-tab>
<?php
$displayposts = new WP_Query();
$displayposts->query('category_name=Projects');
while ($displayposts->have_posts()) : $displayposts->the_post();
$tab_number = $displayposts->current_post + 1;
$active_class = (1 == $tab_number) ? 'active' : '';
?>
<dd class="<?php echo $active_class;?>"><?php the_title(); ?></dd>
<?php endwhile; ?>
</dl>
</div>
<div class="small-8 medium-9 large-9 columns">
<div class="tabs-head">Projects</div>
<div class="tabs-content">
<?php
while ($displayposts->have_posts()) : $displayposts->the_post();
$tab_number = $displayposts->current_post + 1;
$active_class = (1 == $tab_number) ? 'active' : '';
?>
<div class="content <?php echo $active_class;?>" id="tab<?php echo $tab_number;?>">
<h2><?php the_title(); ?></h2>
<div class="row">
<div class="medium-9 large-9 columns">
<?php the_post_thumbnail(); ?>
<p><small>Show above: Huiit Zolars</small></p>
</div>
<div class="medium-3 large-3 columns">
<?php the_content(); ?>
</div>
</div>
</div>
<?php endwhile; ?>
</div>
</div>
</div>