Title: Adding post_class to the loop
Last modified: August 31, 2016

---

# Adding post_class to the loop

 *  Resolved [Guido](https://wordpress.org/support/users/guido07111975/)
 * (@guido07111975)
 * [9 years, 11 months ago](https://wordpress.org/support/topic/adding-post_class-to-the-loop/)
 * Hi,
 * I have a theme which displays my posts in 2 columns. I clear each left post. 
   I currently use this wrapper around each post:
 *     ```
       <div class="post-home<?php if( $wp_query->current_post%2 == 0 ) echo ' left'; ?>">
       // post content
       </div>
       ```
   
 * With CSS:
 *     ```
       .post-home {width:48%; float:left; margin:0;}
       .post-home.left {clear:left; margin:0 4% 0 0;}
       ```
   
 * But I now want to support the [post_class](https://codex.wordpress.org/Function_Reference/post_class)
   so I can use extra Post Formats such as Aside.
 * That’s why I have to include the post_class to the loop (among other things ).
   Normally I can use something like this:
 *     ```
       <article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
       ```
   
 * But because I have to clear each left post I’ve build this:
 *     ```
       <?php if( $wp_query->current_post%2 == 0 ) : ?>
       <article id="post-<?php the_ID(); ?>" <?php post_class('post-home left'); ?>>
       <?php else : ?>
       <article id="post-<?php the_ID(); ?>" <?php post_class('post-home'); ?>>
       <?php endif; ?>
       // post content
       </article>
       ```
   
 * Does work fine, but I’m wondering if this can be improved/fine-tuned?
    And should
   I use the article tag?
 * Any thoughts?
 * Guido

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Moderator [bcworkz](https://wordpress.org/support/users/bcworkz/)
 * (@bcworkz)
 * [9 years, 11 months ago](https://wordpress.org/support/topic/adding-post_class-to-the-loop/#post-7345686)
 * Guido my friend!
 * You could just do
    `<article id="post-<?php the_ID(); ?>" <?php post_class('post-
   home'); echo $wp_query->current_post % 2 ? '' : ' left'; ?>>`
 * Much more concise, but I’m not sure it’s that much more efficient. It’s also 
   harder to read unless you’re familiar with ternary operators and the fact `$value%
   2` returns either true or false (same as 1 or 0).
 * Whether you should use `article` is really “should I use HTML5?” The same arguments,
   pro or con apply.
 *  [harshclimate](https://wordpress.org/support/users/harshclimate/)
 * (@harshclimate)
 * [9 years, 11 months ago](https://wordpress.org/support/topic/adding-post_class-to-the-loop/#post-7345710)
 * Use article for sure. If it’s news, use article. That’s what’s so nice about 
   html5 is that it’s as semantic as you’d like.
 *  [Michael](https://wordpress.org/support/users/alchymyth/)
 * (@alchymyth)
 * [9 years, 11 months ago](https://wordpress.org/support/topic/adding-post_class-to-the-loop/#post-7345728)
 * when using `post_class()` you can add CSS classes via a filter;
 * [https://codex.wordpress.org/Function_Reference/post_class](https://codex.wordpress.org/Function_Reference/post_class)
   
   [https://codex.wordpress.org/Function_Reference/post_class#Add_Classes_By_Filters](https://codex.wordpress.org/Function_Reference/post_class#Add_Classes_By_Filters)
 * in your case, for example:
 *     ```
       function post_layout_class( $classes ) {
       	global $post;
       	if( $wp_query->current_post%2 == 0 ) $classes[] = 'left';
       	return $classes;
       }
       add_filter( 'post_class', 'post_layout_class' );
       ```
   
 *  Thread Starter [Guido](https://wordpress.org/support/users/guido07111975/)
 * (@guido07111975)
 * [9 years, 11 months ago](https://wordpress.org/support/topic/adding-post_class-to-the-loop/#post-7345737)
 * Hi guys,
 * Thanks for your response, I certainly can go further with this.
 * [@bcworkz](https://wordpress.org/support/users/bcworkz/): friends 4ever 😉 😉
 * Guido

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Adding post_class to the loop’ is closed to new replies.

## Tags

 * [loop](https://wordpress.org/support/topic-tag/loop/)

 * In: [Hacks](https://wordpress.org/support/forum/plugins-and-hacks/hacks/)
 * 4 replies
 * 4 participants
 * Last reply from: [Guido](https://wordpress.org/support/users/guido07111975/)
 * Last activity: [9 years, 11 months ago](https://wordpress.org/support/topic/adding-post_class-to-the-loop/#post-7345737)
 * Status: resolved

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