I have the dropdown dynamically populated with the titles of my podcast post type and I can successfully apply a filter by selected a podcast title and clicking filter. However, when the page loads and I see my filtered list the dynamic dropdown does not get populated.
Any idea why this is happening?
Here's my code pulled from my ThemeHelper class...
add_filter( 'parse_query', [ __CLASS__, 'parse_query' ] );
add_action( 'restrict_manage_posts', [ __CLASS__, 'restrict_manage_posts' ] );
function parse_query( $query ) {
global $pagenow;
// Change query based on post_parent
$parent_filter = $_GET['parent'];
if ( is_admin() && $pagenow == 'edit.php' && ! empty( $parent_filter ) ) {
$query->query_vars['post_parent'] = (int) $parent_filter;
}
}
public static function restrict_manage_posts() {
if ( isset( $_GET['post_type'] ) && $_GET['post_type'] == 'episode' ) {
$args = [
'post_type' => 'podcast',
'numberposts' => - 1,
];
$podcasts = get_posts( $args );
$select = '<select name="parent"><option value="">Podcast (' . count( $podcasts ) . ')</option>';
foreach ( $podcasts as $podcast ) {
$selected = ( isset( $_GET['parent'] ) && (int) $_GET['parent'] > 0 ) ? 'selected="selected"' : '';
$select .= '<option value="' . $podcast->ID . '" ' . $selected . '>' . $podcast->post_title . '</option>';
}
$select .= '</select>';
echo $select;
} else {
return;
}
}