je-dynamic-visibility-condition

JetEngine Dynamic Visibility condition

Implement a condition as a deterministic predicate that follows JetEngine's show/hide contract. Do not use visibility as an authorization boundary: hidden markup, REST data, files, and mutations still need server-side access checks.

When to use this skill

• Add a condition to Dynamic Visibility in a JetEngine companion plugin.
• Diagnose reversed Show/Hide results or surprising AND/OR combinations.
• Read a listing object's post, term, user, comment, product, or custom field.
• Add condition-specific controls or a custom condition group.
• Audit render-time queries, global-state changes, or context-sensitive output.

Workflow

1. Confirm JetEngine 3.8.14 and the Dynamic Visibility module are active.
2. Register only on jet-engine/modules/dynamic-visibility/conditions/register; do not instantiate the base class before JetEngine loads the module.
3. Give get_id() a stable, vendor-prefixed ID.
4. Compute the positive match in check(), then return its inverse for hide.
5. Use get_current_value() when the condition consumes JetEngine's Field UI.
6. Read custom controls from $args['condition_settings'][<control-key>].
7. Keep check() pure and cheap. Cache remote/expensive data outside the render loop with a key that includes every relevant user/object/site dimension.
8. Test show and hide, AND and OR, listing and non-listing context, empty values, logged-in/out users, AJAX/load-more, and repeated calls.

Minimal condition

Load the named class from the callback (or through a guarded autoloader), so its parent exists when PHP parses it.

add_action(
    'jet-engine/modules/dynamic-visibility/conditions/register',
    static function ($manager): void {
        require_once __DIR__ . '/src/class-owned-by-current-user.php';
        $manager->register_condition(new My_Plugin_Owned_By_Current_User());
    }
);

use Jet_Engine\Modules\Dynamic_Visibility\Conditions\Base;

final class My_Plugin_Owned_By_Current_User extends Base {
    public function get_id() {
        return 'my_plugin_owned_by_current_user';
    }

    public function get_name() {
        return __('Owned by current user', 'my-plugin');
    }

    public function get_group() {
        return 'user';
    }

    public function is_for_fields() {
        return false;
    }

    public function need_value_detect() {
        return false;
    }

    public function check($args = array()) {
        $object = jet_engine()->listings->data->get_current_object();
        $match  = $object instanceof WP_Post
            && (int) $object->post_author === get_current_user_id();

        return 'hide' === ($args['type'] ?? 'show') ? ! $match : $match;
    }
}