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meta_key=_jsFeaturedPost meta_value=yes

I have posts where some have meta keys/values and some don't. I would like to target the ones with the meta keys that have a value of 'yes' and add a CSS class to those posts so I can style them differently.

Ideally, something like: if meta_value for meta_key (jsFeaturedPost) is yes, then add class.

How would I do this?

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up vote 3 down vote accepted

The post_class filter is your friend. Just combine it with get_post_meta().

function wpse80098_filter_post_class( $classes ) {
    global $post;
    if ( 'yes' == get_post_meta( $post->ID, '_jsFeaturedPost', true ) ) {
        $classes[] = 'my-custom-css-class';
    return $classes;
add_filter( 'post_class', 'wpse80098_filter_post_class' );

Just replace my-custom-css-class with whatever class you want to apply to the post container in question.

As noted in the comments, this implementation relies on the post_class() template tag being called properly in the post container, e.g.:

<div id="post-<?php the_ID(); ?>" <?php post_class(); ?>>


Re: this question in the comments:

Is there a way I can dynamically prepend an a tag to the posts with the featured class?

The easiest method is probably to filter the_content:

function wpse80098_filter_the_content( $content ) {
    global $post;
    if ( 'yes' == get_post_meta( $post->ID, '_jsFeaturedPost', true ) ) {
        return '<a href="http://example.com">' . $content . '</a>';
    return $classes;
add_filter( 'the_content', 'wpse80098_filter_the_content', 99 );

Add a very high priority number, so that this filter gets applied last.

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The classes still aren't showing up for the featured posts. These posts are coming from a custom post type if that makes any difference. Here is a pastebin of how I have the template set up: pastebin.com/MHKrDQUZ – Desi Jan 10 '13 at 23:13
You should add the post_class template tag to the post container, in your case <li id="movie-<?php the_ID(); ?>" <?php post_class(); ?>> – diggy Jan 11 '13 at 0:34
Ah, thank you! I thought the function would add it automatically. – Desi Jan 11 '13 at 0:54
Is there a way I can dynamically prepend an a tag to the posts with the featured class? I tried something like this: $("#all-movies li.featured").prepend('<a href="<?php bloginfo("url"); ?>/hello"></a>'); but realized I couldn't because the featured class is being added dynamically. – Desi Jan 11 '13 at 7:05
@John that's a separate question, and should be asked separately; but I'll add something to my answer. – Chip Bennett Jan 11 '13 at 12:38

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