Field Render

Display a hidden input allowing you to pass custom data to the current form. The field wrapper won’t be displayed.

Field Settings

Setting nameDescription
Define a custom value

Field Value

Value can then be retrieved using the common get_field() function. Usage example:

$hidden = get_field('hidden');

// my_value

Custom Value

It is possible to change the field value using the acf/prepare_field hook. Note that the value will saved like any other custom meta. Usage example:

add_filter('acf/prepare_field/name=hidden', 'my_acf_hidden');
function my_acf_hidden($field){
    $field['default_value'] = 'my_value';
    return $field;

To prevent the value from being saved as a custom meta, you can use the acf/update_value hook and return null. Usage example:

add_filter('acf/update_value/name=hidden', 'my_acf_hidden_update', 10, 3);
function my_acf_hidden_update($value, $post_id, $field){
    return null;