Admin Filter, not filling in select value with array key #196
Description
Hello,
I have two post types product and product-collection
Product posts have a collection attached via an ACF Post Object field called collection
admin_filters in the admin the select field value="" is the same as the option label, I would expect the post ID to be used as the option value.
register_extended_post_type('product', [
'menu_icon' => 'dashicons-products',
'enter_title_here' => 'Name',
'supports' => ['title', 'meta_key', 'page-attributes'],
'hierarchical' => false,
'dashboard_glance' => false,
'quick_edit' => true,
'has_archive' => false,
'admin_cols' => [
'collection' => [
'title' => 'Collection',
'meta_key' => 'collection',
'function' => function(WP_Post $post) {
$collection = get_field('collection', $post->ID);
if(!empty($collection)) {
echo $collection->post_title;
}
},
],
],
# Add some dropdown filters to the admin screen:
'admin_filters' => [
'collection' => [
'meta_key' => 'collection',
'options' => 'get_collection_values',
],
]
],
[
'singular' => 'Product',
'plural' => 'Products',
'slug' => 'product',
]
);
function get_collection_values() {
$args = array(
'post_type'=> 'product-collection',
'orderby' => 'ID',
'post_status' => 'publish',
'order' => 'DESC',
'posts_per_page' => -1
);
$result = new WP_Query( $args );
$options = [];
foreach($result->posts as $post) {
$options[$post->ID] = $post->post_title;
}
print_r($options);
return $options;
}
This is what gets output in the admin
Array
(
[428] => Circa
[144] => 3001
[57] => Voda
[56] => Suba
[55] => Scala
[54] => Monsoon
[53] => Duet
[51] => Calibre
)
<label for="filter_collection" class="screen-reader-text">Filter by Collection</label>
<select name="collection" id="filter_collection">
<option value="">All Collections</option>
<option value="Circa">Circa</option>
<option value="3001">3001</option>
<option value="Voda">Voda</option>
<option value="Suba">Suba</option>
<option value="Scala">Scala</option>
<option value="Monsoon">Monsoon</option>
<option value="Duet">Duet</option>
<option value="Calibre">Calibre</option>
</select>
I would expect output to be like
<option value="">All Collections</option>
<option value="428">Circa</option>
<option value="144">3001</option>
<option value="57">Voda</option>
I can confirm changing the URL manually is correctly filtering the results.
It works when I remove the options function and keep only meta_key but then only shows the ID not the post_title.