Get a rendered field.
$index: The index count of the row.
$field: The id of the field.
function get_field($index, $field) {
if (!isset($this->rendered_fields)) {
$this
->render_fields($this->view->result);
}
if (isset($this->rendered_fields[$index][$field])) {
return $this->rendered_fields[$index][$field];
}
}