bbp_post_request()

function bbp_post_request() {

	// Bail if not a POST action
	if ( ! bbp_is_post_request() )
		return;

	// Bail if no action
	if ( empty( $_POST['action'] ) )
		return;

	// This dynamic action is probably the one you want to use. It narrows down
	// the scope of the 'action' without needing to check it in your function.
	do_action( 'bbp_post_request_' . $_POST['action'] );

	// Use this static action if you don't mind checking the 'action' yourself.
	do_action( 'bbp_post_request',   $_POST['action'] );
}