Filter Reference / iworks upprev check


iworks_upprev_check is a filter applied to a value to decide show up or not upprev box by the function iworks_upprev_check().


function my_check($value) {
    # ...
    return false;
add_filter('iworks_upprev_check', 'my_check', 10, 1);

Return true to hide upprev box.


(boolean) (required) The value decide is upPrev box show or not.

Default: None


Hide upPrev box if category is “News”:

add_filter('iworks_upprev_check', 'hide_for_category');
function hide_for_category($value) {
    if( is_post() && in_category('News') ) {
        return true;
    return $value;

Show box only for posts with id 1, 2 or 501.

add_filter('iworks_upprev_check', 'my_iworks_upprev_check');
function my_iworks_upprev_check($value)
    global $post;
    if ( empty($post) ) {
        return $value;
    $allowed_ids = array( 1, 2, 501 );
    return !in_array($post->ID, $allowed_ids);

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