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cliffordp/functions.php

Last active Mar 15, 2017
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Limit Essential Grid's WP_Query to only include posts with featured images
<?php
/**
* Limit Essential Grid's WP_Query to only include posts with featured images
*
* From https://gist.github.com/cliffordp/fbbaad70b9b8748819ac73f00260ac5e
* Similar code for Slider Revolution: https://gist.github.com/cliffordp/9f0d7cc5e86b2a721cd646d953bb1261
* Same Essential Grid code except with additional requirement to be a Featured Event from The Events Calendar: https://gist.github.com/cliffordp/a6aad3c60f469970b1ecb209d85ec755
*
* essgrid_get_posts filter is from /wp-content/plugins/essential-grid/includes/base.class.php
*
* Tested working with version 2.1.0.2
*
* Filter hook only applies to Essential Grid > Source > Source Based on Posts, Pages, Custom Posts
*
* @return array
*/
function essgrid_post_based_require_featured_image( $query, $grid_id ) {
/*
* YOU MUST CHANGE THESE
* TO YOUR OWN ESSENTIAL GRID
* GRID IDs
* !!!
*/
$grid_ids_to_affect = array( 1, 2, 14 ); // include IDs of grids to affect
// if this grid is not one to affect, do no filtering
if ( ! in_array( $grid_id, $grid_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( 'essgrid_get_posts', 'essgrid_post_based_require_featured_image', 10, 2 );
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