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Limit Slider Revolution's WP_Query to only include posts with featured images
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<?php | |
/** | |
* Limit Slider Revolution's WP_Query to only include posts with featured images | |
* | |
* From https://gist.github.com/cliffordp/9f0d7cc5e86b2a721cd646d953bb1261 | |
* Similar code for Essential Grid: https://gist.github.com/cliffordp/fbbaad70b9b8748819ac73f00260ac5e | |
* Same Slider Revolution code except with additional requirement to be a Featured Event from The Events Calendar: https://gist.github.com/cliffordp/30ac2152a8264ef27235b46b7d16332d | |
* | |
* revslider_get_posts filter is from /wp-content/plugins/revslider/includes/framework/functions-wordpress.class.php as of version 4.5.0 | |
* | |
* Filter hook only applies to Slider Revolution > Post-Based Slider > Fetch Posts By Categories & Tags | |
* or Slider Revolution > Post-Based Slider > Specific Posts > Specific Posts List (CSV of Post IDs) | |
* | |
* @return array | |
*/ | |
function revslider_post_based_require_featured_image( $query, $slider_id ) { | |
/* | |
* YOU MUST CHANGE THESE | |
* TO YOUR OWN SLIDER REVOLUTION | |
* SLIDER IDs | |
* !!! | |
*/ | |
$slider_ids_to_affect = array( 2, 20, 34 ); // include IDs of sliders to affect | |
// if this slider is not one to affect, do no filtering | |
if ( ! in_array( $slider_id, $slider_ids_to_affect ) ) { | |
return $query; | |
} | |
// get the existing meta_query so we aren't wiping that out | |
if ( ! empty( $query['meta_query'] ) ) { | |
$meta_query = (array) $query[ 'meta_query' ]; | |
} else { | |
$meta_query = array(); | |
} | |
// do the filtering... | |
// has a Featured Image | |
$meta_query[] = array( | |
'key' => '_thumbnail_id', | |
'compare' => 'EXISTS', | |
); | |
$query['meta_query'] = $meta_query; | |
return $query; | |
} | |
add_filter( 'revslider_get_posts', 'revslider_post_based_require_featured_image', 10, 2 ); |
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