Integrating Bootstrap carousel in WordPress without plugin

Question

I have integarted bootstrap carousel into my wordpress. The slides will be taken from the posts which will be tagged as "featured" so only 5 recently enter "featured" posts will be shown.

Below is my code:

<div id="carousel-captions" class="carousel slide bs-docs-carousel hidden-xs">
        <ol class="carousel-indicators">
          <li data-target="#carousel-captions" data-slide-to="0" class="active"></li>
          <li data-target="#carousel-captions" data-slide-to="1" class=""></li>
          <li data-target="#carousel-captions" data-slide-to="2" class=""></li>
          <li data-target="#carousel-captions" data-slide-to="3" class=""></li>
          <li data-target="#carousel-captions" data-slide-to="4" class=""></li>
        </ol>
        <div class="carousel-inner">

<?php $the_query = new WP_Query( 'tag=featured&orderby=date&posts_per_page=5' ); ?>

<?php if ( $the_query->have_posts() ) : ?>

  <?php while ( $the_query->have_posts() ) : $the_query->the_post(); ?>
    <div class="item">
          <a href="<?php the_permalink() ?>">
            <img src="<?php the_field('header_banner', $post_id); ?>" alt="">
            <div class="carousel-caption">
              <h3><?php the_field('year', $post_id); ?></h3><span class="name">Make<br><?php $category = get_the_category(); echo $category[0]->cat_name; ?></span><hr>
              <p><?php the_field('mileage', $post_id); ?> Miles | <?php the_field('exterior_color', $post_id); ?> Color<br><br><?php echo homepage_carousel_excerpt(15); ?></p><span class="btn btn-default">Details&nbsp;&nbsp;&nbsp;&rarr;</span>
            </div></a>
          </div>
  <?php endwhile; ?>
  <?php wp_reset_postdata(); ?>

<?php else:  ?>
  <p><?php _e( 'Sorry, no posts matched your criteria.' ); ?></p>
<?php endif; ?>


        </div>
        <a class="left carousel-control" href="#carousel-captions" data-slide="prev">
          <span class="icon-prev"></span>
        </a>
        <a class="right carousel-control" href="#carousel-captions" data-slide="next">
          <span class="icon-next"></span>
        </a>
</div>

The problem is It doesn't slide because the "active" class is not working statically.

HOw do I fix this?

Thanks

Answer 1

To avoid having to query twice, you can set a variable set to 1 outside your loop. In the loop, you add the "active" class when it's equal to 1, then you increment it.

<?php
// Previous code here...
$i = 1;
while ( $the_query->have_posts() ) :
    $the_query->the_post();
         ?>
        <div class="item<?php if ($i == 1) echo 'active'; ?>">

        </div>
<?php
    $i++;
endwhile;
wp_reset_postdata();
?>

Answer 2

This is the solution I came up with:

<?php
 $args = array(
 'post_type'      => 'slides',
 'oderby'         => 'menu_order',
 'posts_per_page' => -1
 );

$slides = new WP_Query( $args );

if( $slides->have_posts() ): ?>
<div class="row">
  <div class="col-xs-12">
      <!--Twitter bootstrap Photo carrousel-->
  <div id="myCarousel" class="carousel slide center-block"     data-ride="carousel" >
    <!-- Indicators -->
    <ol class="carousel-indicators">
        <li data-target="#myCarousel" data-slide-to="0" class="active"></li>
        <li data-target="#myCarousel" data-slide-to="1"></li>
        <li data-target="#myCarousel" data-slide-to="2"></li>
        <li data-target="#myCarousel" data-slide-to="3"></li>
        <li data-target="#myCarousel" data-slide-to="4"></li>
    </ol>
<!-- Wrapper for slides -->
<div class="carousel-inner" role="listbox">
    <?php while( $slides->have_posts() ) : $slides->the_post(); $index++ ?>

      <?php if ( $index == 1 ): ?>
        <div class="item active">
      <?php else: ?>
        <div class="item">
      <?php endif; ?>
      <?php $url = wp_get_attachment_url( get_post_thumbnail_id() ); ?>
            <img src="<?php echo $url; ?>" alt="<?php the_title(); ?>">
        </div>
  <?php endwhile; ?>
<?php endif; ?>
      <!-- Left and right controls -->
    <a class="left carousel-control" href="#myCarousel" role="button" data-slide="prev">
        <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
        <span class="sr-only">Previous</span>
    </a>
    <a class="right carousel-control" href="#myCarousel" role="button" data-slide="next">
        <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
        <span class="sr-only">Next</span>
    </a>
  </div>
</div><!-- carrousel ends here -->

I learnt this by watching the following video: Integrating the Bootstrap Carousel into the WordPress theme by user Ezer Sanbe. All credits to him.

The youtube video or the channel for this user are no longer available, sorry

Hope this helps