Th Product Compare Pro

Custom Fields & Hooks

Add your own custom product fields to Product Compare Pro. The plugin reads native WooCommerce post meta, Advanced Custom Fields (ACF), and Secure Custom Fields (SCF). Developers can also register fields programmatically with the th-product-compare-field filter so any desired custom field appears in the compare table.

At a glance

• Supported sources: WooCommerce post meta, ACF, SCF
• Programmatic hook: th-product-compare-field

Quick user steps

• Create the custom field in ACF, SCF, or the native custom fields box and assign it to the Product post type. Note the field name (meta key).
• Add the field to Product Compare. You can either add it via the plugin Field Map UI or register it programmatically with the filter shown below.
• Clear any caches and open the compare popup or table. The new field will appear in the field list and can be reordered like other fields.

Programmatic registration

Use the th-product-compare-field filter to add custom fields. Product Compare will merge your fields with the default set, so your callback should accept the existing fields array and return the merged result.

Filter details

• Filter name: th-product-compare-field
• Purpose: Register or extend compare fields programmatically
• Expected return shape: associative array where keys are internal field keys, and values are arrays with at least title and field_key values

Example

Note: Add this code to functions.php or Code Snippets

add_filter( 'th-product-compare-field', 'theme_name_callback' );

function my_callback(){
return array('key1'=>['title'=>'Memory','field_key'=>'key1'],
'key2'=>['title'=>'Memory','field_key'=>'key2'],
);
}
add_filter( 'th-product-compare-field', 'my_callback' );


[
'key1' => [ // ← U WordPress post meta key (custom field key)
'title' => 'Label', // ← Shown in the compare table header/UI
'key1' => 'meta_key', // ← WordPress post meta key (custom field key) to fetch from the product
],
...
]

After adding the code to your functions.php file, you will now see the extra fields added to your Product Compare Table, as shown in the screenshot below.

As you can see in the above image, we have added the custom fields.