我正在尝试使用高级自定义字段在 WordPress 中创建 Bootstrap 轮播。
循环中的第一个“轮播项目”必须具有“active”类。我无法弄清楚如何定义 if 条件,以便将该类添加到循环的第一次迭代中。
轮播指示器的情况也是如此。 类 active 应添加到第一次迭代中,并且 data-slide-to="x"应该是循环的计数器。知道如何让计数和类工作吗?
<section>
<div id="theCarousel" class="carousel slide" data-ride="carousel" data-interval="false">
<ol class="carousel-indicators">
<li data-target="#theCarousel" data-slide-to="0" class="active"></li>
<li data-target="#theCarousel" data-slide-to="1"></li>
<li data-target="#theCarousel" data-slide-to="2"></li>
</ol>
<div class="carousel-inner" role="listbox">
<?php $loop = new WP_Query( array ( 'post_type' => 'carousel', 'orderby' => 'post_id', 'order' => 'ASC') ); ?>
<?php while( $loop->have_posts() ): $loop->the_post(); ?>
<div class="carousel-item" style="background-image: url('<?php the_field('carousel_image'); ?>')">
<div class="carousel-caption d-none d-md-block">
<h3><?php the_title(); ?></h3>
<p><?php the_field('carousel_description'); ?></p>
</div>
</div>
<?php endwhile; wp_reset_query();?>
</div>
<a class="carousel-control-prev" href="#theCarousel" role="button" data-slide="prev">
<span class="carousel-control-prev-icon" aria-hidden="true"></span>
<span class="sr-only">Previous</span>
</a>
<a class="carousel-control-next" href="#theCarousel" role="button" data-slide="next">
<span class="carousel-control-next-icon" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
</section>
最佳答案
你可以这样做
<div class="carousel-inner" role="listbox">
<?php
$iteration = 0;
$loop = new WP_Query( array ( 'post_type' => 'carousel', 'orderby' => 'post_id', 'order' => 'ASC') ); ?>
<?php while( $loop->have_posts() ): $loop->the_post(); $iteration++; ?>
<div class="carousel-item<?php if( $iteration == 1 ) echo ' active' ?>" style="background-image: url('<?php the_field('carousel_image'); ?>')" data-slide-to="<?php echo $iteration ?>">
<div class="carousel-caption d-none d-md-block">
<h3><?php the_title(); ?></h3>
<p><?php the_field('carousel_description'); ?></p>
</div>
</div>
<?php endwhile; wp_reset_query();?>
</div>
<a class="carousel-control-prev" href="#theCarousel" role="button" data-slide="prev">
<span class="carousel-control-prev-icon" aria-hidden="true"></span>
<span class="sr-only">Previous</span>
</a>
<a class="carousel-control-next" href="#theCarousel" role="button" data-slide="next">
<span class="carousel-control-next-icon" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
</section>
关于php - WordPress 的 while 循环中的第一篇文章,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46875518/