Filter custom post type by Custom Field (ACF) in the admin area

Published
April 26, 2022
浏览次数 :  1

<?PHP 
//admin filter
add_action( 'restrict_manage_posts', 'wpse45436_admin_posts_filter_restrict_manage_posts' );
/**
 * First create the dropdown
/** Create the filter dropdown */
function wpse45436_admin_posts_filter_restrict_manage_posts(){
    $type = 'custom_post_type'; // change to custom post name.
    if (isset($_GET['custom_post_type'])) {
        $type = $_GET['custom_post_type'];
    }

    //only add filter to post type you want
    if ('movies' == $type){
        //change this to the list of values you want to show
        //in 'label' => 'value' format
        $values = array(
            'label' => 'value1', 
            'label1' => 'value2',
            'label2' => 'value3',
        );
        ?>
        <select name="ADMIN_FILTER_FIELD_VALUE">
        <option value=""><?php _e('Filter By ', 'wose45436'); ?></option>
        <?php
            $current_v = isset($_GET['ADMIN_FILTER_FIELD_VALUE'])? $_GET['ADMIN_FILTER_FIELD_VALUE']:'';
            foreach ($values as $label => $value) {
                printf
                    (
                        '<option value="%s"%s>%s</option>',
                        $value,
                        $value == $current_v? ' selected="selected"':'',
                        $label
                    );
                }
        ?>
        </select>
        <?php
    }
}


add_filter( 'parse_query', 'wpse45436_posts_filter' );
/**
 * if submitted filter by post meta

 * @return Void
 */
function wpse45436_posts_filter( $query ){
    global $pagenow;
    $type = 'movies'; // change to custom post name.
    if (isset($_GET['custom_post_type'])) {
        $type = $_GET['custom_post_type'];
    }
    if ( 'movies' == $type && is_admin() && $pagenow=='edit.php' && isset($_GET['ADMIN_FILTER_FIELD_VALUE']) && $_GET['ADMIN_FILTER_FIELD_VALUE'] != '') {
        $query->query_vars['meta_key'] = 'META_KEY'; // change to meta key created by acf.
        $query->query_vars['meta_value'] = $_GET['ADMIN_FILTER_FIELD_VALUE']; 
    }
}

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